Generac Portable Generator 6461 User Manual

Owner’s Manual  
Automatic Standby Generator  
8 kW to 22 kW  
NOT INTENDED FOR USE IN CRITICAL LIFE SUPPORT APPLICATIONS.  
n
ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT  
n
INSTALLATION.  
DEADLY EXHAUST FUMES! OUTDOOR INSTALLATION ONLY!  
n
C
US  
Reference all appropriate documentation.  
This manual should remain with the unit.  
LISTED  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Table of Contents  
Section 1 — Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
1.1 — General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1.2 — General Safety Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1.3 — Exhaust Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
1.4 — Electrical Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
1.5 — Fire Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
1.6 — Explosion Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Section 2 — General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
2.5 — Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Section 3 — Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
3.1 — Control Panel Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
3.6 — Manual Transfer Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Section 4 — Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
4.1 — Performing Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
4.2 — Service Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
4.3 — Checking Engine Oil Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
4.4 — Changing the Engine Air Cleaner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
4.5 — Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
4.6 — Valve Lash Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
4.7 — Battery Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
4.8 — Attention After Submersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
4.9 — Corrosion Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
4.10 — Out of Service Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Section 5 — Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Section 6 — Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
iii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
This page intentionally left blank.  
iv  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 1  
Safety  
INTRODUCTION: Thank you for purchasing this compact, high performance, air-cooled, engine-driven stationary automatic standby generator  
set. Every effort was made to make sure that the information and instructions in this manual were both accurate and current at the time the man-  
ual was written. However, the manufacturer reserves the right to change, alter or otherwise improve this product or manual at any time without  
prior notice.  
This generator is designed to automatically supply electrical power to operate critical loads during a utility power failure. This unit is factory  
installed in an all-weather metal enclosure and is intended exclusively for outdoor installation. This generator will operate using either vapor  
withdrawn liquid propane (LP) or natural gas (NG).  
NOTE: When properly sized, this generator is suitable for supplying typical residential loads such as Induction Motors (sump pumps,  
refrigerators, air conditioners, furnaces, etc.), Electronic Components (computer, monitor, TV, etc.), Lighting Loads and Microwaves.  
READ THIS MANUAL THOROUGHLY: The operator is responsible for proper and safe use of this equipment. The manufacturer strongly recom-  
mends that the operator read and thoroughly understand the instructions and contents of this owners manual before attempting to use the equip-  
ment. If any portion of this publication is not understood, contact the nearest Authorized Service Dealer for starting, operating and servicing  
procedures.  
SAVE THESE INSTRUCTIONS: The manufacturer suggests that this manual and the rules for safe operation be copied and posted near the  
units installation site. Safety should be stressed to all operators and potential operators of this equipment.  
SAFETY: Throughout this manual, and on tags and decals affixed to the unit, DANGER, WARNING, CAUTION and NOTE blocks are used to  
alert personnel to special instructions about a particular operation, function or service that may be hazardous if performed incorrectly or care-  
lessly. Observe them carefully. Their definitions are as follows:  
INDICATES A HAZARDOUS SITUATION OR ACTION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR SERIOUS  
INJURY.  
Indicates a hazardous situation or action which, if not avoided, could result in death or serious injury.  
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.  
NOTE: Notes contain additional information important to an operation or procedure.  
Four commonly used safety symbols accompany the DANGER, WARNING and CAUTION blocks. The type of information each indicates is as  
follows:  
This symbol points out important Safety Information that, if not followed, could endanger personal safety and/or  
property of others.  
*
This symbol points out a potential Explosion Hazard.  
$
!
This symbol points out a potential Fire Hazard.  
This symbol points out a potential Electrical Shock Hazard.  
+
These Safety Alerts” cannot eliminate the hazards that they signal. Strict compliance with these special instructions, plus common sense are  
major accident prevention measures.  
Automatic Standby Generator Owner’s Manual  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
1.1 — General Safety  
Study these safety rules carefully before operating or servicing this equipment. Become familiar with this Owners Manual and with the unit. The  
generator can operate safely, efficiently and reliably only if it is properly installed, operated and maintained. Many accidents are caused by failing  
to follow simple and fundamental rules or precautions.  
The manufacturer cannot anticipate every possible circumstance that might involve a hazard. The warnings in this manual, and on tags and  
decals affixed to the unit are, therefore, not all-inclusive. If using a procedure, work method or operating technique the manufacturer does not  
specifically recommend, ensure that it is safe for personnel. Also make sure the procedure, work method or operating technique utilized does not  
render the generator unsafe.  
Despite the safe design of this generator, operating this equipment imprudently, neglecting its maintenance or  
being careless can cause possible injury or death. Permit only responsible and capable persons to install, operate  
and maintain this equipment.  
*
Potentially lethal voltages are generated by these machines. Ensure steps are taken to make the machine safe  
before attempting to work on the generator.  
+
*
Parts of the generator are rotating and/or hot during operation. Exercise care near a running generator.  
The installation of this generator must always comply with applicable codes, standards, laws and regulations.  
*
*
A running generator gives off DEADLY carbon monoxide, an odorless, colorless, poisonous gas. Breathing carbon  
monoxide can cause dizziness, throbbing temples, nausea, muscular twitching, headache, vomiting, weakness,  
sleepiness, inability to think clearly, fainting, unconsciousness or even death.  
The control panel for this unit is intended to be operated by qualified service personnel only.  
*
1.2 — General Safety Hazards  
For safety reasons, this equipment should only be installed, serviced and repaired by a Service Dealer or other competent, qualified electri-  
cian or installation technician who is familiar with applicable codes, standards, regulations and product Installation Manual guidelines. The  
operator also must comply with all such codes, standards, regulations and product Installation Manual guidelines.  
The engine exhaust fumes contain carbon monoxide, which can be DEADLY. This dangerous gas, if breathed in sufficient concentrations, can  
cause unconsciousness or even death. DO NOT alter or add to the exhaust system or do anything that might render the system unsafe or in  
noncompliance with applicable codes and standards.  
Install a carbon monoxide alarm indoors, according to manufacturers instructions/recommendations.  
Adequate, unobstructed flow of cooling and ventilating air is critical for correct generator operation. Do not alter the installation or permit even  
partial blockage of ventilation provisions, as this can seriously affect safe operation of the generator. The generator MUST be installed and  
operated outdoors only.  
Keep hands, feet, clothing, etc. away from drive belts, fans, and other moving or hot parts. Never remove any drive belt or fan guard while the  
unit is operating.  
When working on this equipment, remain alert at all times. Never work on the equipment when physically or mentally fatigued.  
Inspect the generator regularly, and contact the nearest Dealer for parts needing repair or replacement.  
Before performing any maintenance on the generator, remove the control panel fuse and disconnect the Negative () battery cable to pre-  
vent accidental startup. When disconnecting battery cables always remove the NEGATIVE (NEG or “—”) cable first, then remove the  
POSITVE (POS, or +”) cable. When reconnecting the cables, connect the POSITIVE cable first, and the NEGATIVE cable last.  
Never use the generator or any of its parts as a step. Stepping on the unit can stress and break parts, and may result in dangerous operating  
conditions from leaking exhaust gases, fuel leakage, oil leakage, etc.  
2
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
1.3 — Exhaust Hazards  
Generator engine exhaust contains DEADLY carbon monoxide, an odorless, colorless, poisonous gas. Breathing carbon monoxide can  
cause dizziness, throbbing temples, nausea, muscular twitching, headache, vomiting, weakness, sleepiness, inability to think clearly, fainting,  
unconsciousness or even death. If any carbon monoxide poisoning symptom is experienced, move into fresh air and immediately seek med-  
ical attention.  
This generator is designed for OUTDOOR installation ONLY. Never operate the generator inside any garage or other enclosed space.  
1.4 — Electrical Hazards  
All generators covered by this manual produce dangerous electrical voltages that can cause fatal electrical shock. Utility power delivers  
extremely high and dangerous voltages to the transfer switch, as does the standby generator when it is in operation. Avoid contact with bare  
wires, terminals, connections, etc. while the unit is running. Ensure all appropriate covers, guards and barriers are in place, secured and/or  
locked before operating the generator. If work must be done around an operating unit, stand on an insulated, dry surface to reduce potential  
shock hazard.  
Do not handle any kind of electrical device while standing in water, while barefoot, or while hands or feet are wet. DANGEROUS ELECTRI-  
CAL SHOCK MAY RESULT.  
This is an Automatic Standby Generator, the generator may crank and start at any time when utility is lost. When this occurs, load circuits are  
transferred to the STANDBY (generator) power source. To prevent injury, before working on this generator (for inspection, service or mainte-  
nance), always put the generator into the OFF mode and remove the 7.5 Amp fuse from the generator control panel.  
In case of accident caused by electric shock, immediately shut down the source of electrical power. If this is not possible, attempt to free the  
victim from the live conductor. AVOID DIRECT CONTACT WITH THE VICTIM. Use a nonconducting implement, such as a dry rope or board,  
to free the victim from the live conductor. If the victim is unconscious, apply first aid and get immediate medical help.  
Never wear jewelry when working on this equipment. Jewelry can conduct electricity resulting in electric shock, or may get caught in moving  
components resulting in injury.  
1.5 — Fire Hazards  
For fire safety, the generator must be installed and maintained properly. Installation MUST always comply with applicable codes, standards,  
laws, regulations and product Installation Manual guidelines. Adhere strictly to local, state, and national electrical and building codes. Comply  
with regulations the Occupational Safety and Health Administration (OSHA) has established. Also, ensure that the generator is installed in  
accordance with the manufacturers instructions and recommendations. Following proper installation, do nothing that might alter a safe instal-  
lation and render the unit in noncompliance with the aforementioned codes, standards, laws and regulations.  
Keep a fire extinguisher near the generator at all times. Extinguishers rated ABC” by the National Fire Protection Association are appropriate  
for use on the standby generator. Keep the extinguisher properly charged and be familiar with its use. Consult the local fire department with  
any questions pertaining to fire extinguishers.  
1.6 — Explosion Hazards  
Do not smoke around the generator. Wipe up any fuel or oil spills immediately. Ensure that no combustible materials are left in the generator  
compartment, or on or near the generator as FIRE or EXPLOSION may result. Keep the area surrounding the generator clean and free from  
debris.  
Gaseous fluids such as natural gas and liquid propane (LP) gas are extremely EXPLOSIVE. Install the fuel supply system according to appli-  
cable fuel-gas codes. Before placing the home standby electric system into service, fuel system lines must be properly purged and leak  
tested according to applicable code. After installation, inspect the fuel system periodically for leaks. No leakage can be permitted.  
Automatic Standby Generator Owner’s Manual  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
If this generator is used to power electrical load circuits normally powered by a utility power source, it is required  
by code to install a transfer switch. The transfer switch must effectively isolate the electrical system from the utility  
distribution system when the generator is operating (NEC 702). Failure to isolate an electrical system by such  
means will result in damage to the generator and also may result in injury or death to utility power workers due to  
backfeed of electrical energy.  
+
4
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 2  
General Information  
2.1 — The Generator  
CONTROL  
PANEL  
OIL  
DIPSTICK  
DATA LABEL  
(SEE SAMPLE)  
CIRCUIT  
BREAKERS  
EXHAUST  
ENCLOSURE  
AIR FILTER  
FUEL INLET  
(BACK)  
FUEL  
REGULATOR  
COMPOSITE BASE  
BATTERY COMPARTMENT  
OIL FILL CAP  
OIL FILTER  
Figure 2-1: GH-410 Engine 8 kW Unit  
CONTROL  
PANEL  
DATA LABEL  
(SEE SAMPLE)  
OIL  
DIPSTICK  
AIR FILTER  
CIRCUIT  
BREAKERS  
EXHAUST  
ENCLOSURE  
FUEL  
INLET  
(BACK)  
FUEL  
REGULATOR  
COMPOSITE BASE  
BATTERY COMPARTMENT  
OIL FILTER  
OIL FILL CAP  
Figure 2-2: GH-530 Engine 11 kW Unit  
Automatic Standby Generator Owner’s Manual  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CONTROL  
PANEL  
DATA LABEL  
(SEE SAMPLE)  
OIL  
DIPSTICK  
CIRCUIT  
BREAKERS  
AIR FILTER  
EXHAUST  
ENCLOSURE  
FUEL  
INLET  
(BACK)  
FUEL  
REGULATOR  
COMPOSITE BASE  
BATTERY COMPARTMENT  
OIL FILTER  
OIL FILL CAP  
Figure 2-3: GT-990/GT-999 Engines, 16-22 kW Units  
2.2 — Protection Systems  
The generator may have to run for long periods of time with no operator present to monitor the engine/generator conditions. Therefore, the gen-  
erator is equipped with a number of systems to automatically shut down the unit to protect it against potentially damaging conditions. Some of  
these systems are as follows  
Alarms:  
High Temperature  
Low Oil Pressure  
Overcrank  
RPM Sensor Loss  
Controller Fault  
Wiring Error  
Overspeed  
Underspeed  
Warnings:  
Charger Warning  
Overvoltage  
Charger Missing AC  
Low Battery  
Undervoltage  
Fuse Problem  
Overload  
Exercise Set Error  
USB Warning  
Stepper Overcurrent  
Download Failure  
The control panel contains a display which alerts the operator when a fault condition occurs. The above list is not all inclusive. For more informa-  
tion about alarms and control panel operation, see Section 3 Operation.  
NOTE: A warning will indicate a condition, on the generator, that should be addressed but not shut the gener-  
ator down. Am alarm will shut the generator down to protect the system from any damage. In the event of an  
alarm, an owner can clear the alarm and restart the generator prior to contacting their independent servicing  
dealer. If the intermittent issue occurs again, contact your independent servicing dealer.  
6
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
2.3 — Emission Information  
The U.S. Environmental Protection Agency (EPA) requires that this generator comply with exhaust emission standards. This generator is certified  
to meet the applicable EPA emission levels, and is certified for use as a stationary engine for standby power generation. Any other use may be a  
violation of federal and/or local laws. To ensure that the engine complies with the applicable emission standards for the duration of the engines  
life, it is important to follow the maintenance specifications in the Section 4 Maintenance. This generator is certified to operate on Liquid Propane  
Vapor fuel or pipeline Natural Gas.  
For generators 16 kW and greater, the Emission Control System code is EM (Engine Modification). The Emission Control System on this  
generator consists of the following components:  
Air Induction System  
Intake Pipe / Manifold  
Air Cleaner  
Fuel Metering System  
Carburetor / Mixer Assembly  
Fuel Regulator  
Ignition System  
Spark Plug  
Ignition Module  
Exhaust System  
Exhaust Manifold  
Muffler  
Automatic Standby Generator Owner’s Manual  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
2.4 — Specifications  
2.4.1 — Generator  
Model  
8 kW  
11 kW  
16 kW  
20 kW  
22 kW  
Rated Voltage  
240  
Rated Maximum Load  
Current (Amps) at 240 Volts  
(LP)*  
33.3  
45.8  
66.6  
83.3  
91.7  
Main Circuit Breaker  
Phase  
35 Amp  
50 Amp  
65 Amp  
1
90 Amp  
100 Amp  
Rated AC Frequency  
Battery Requirement  
Weight (unit only in lbs./kilos)  
Enclosure  
60 Hz  
Group 26R, 12 Volts and 525 CCA Minimum (Generac Part No. 0H3421S)  
360/163.3  
Steel  
407/184.6  
Steel  
471/213.6  
Steel  
451/204.6  
Steel  
476/216  
Aluminum  
This unit is tested in accordance to UL 2200 standards with an operating temperature of -20 ºF (-29 ºC) to 122 ºF (50  
ºC). For areas where temperatures fall below 32 ºF (0 ºC) a cold weather kit is required. When operated above 77 ºF  
(25 ºC) there may be a decrease in engine power. Please reference the engine specifications section.  
Normal Operating Range  
These generators are rated in accordance with UL 2200, Safety Standard for Stationary Engine Generator Assemblies, and CSA-C22.2 No. 100-04  
Standard for Motors and Generators.  
* Natural Gas ratings will depend on specific fuel Btu/joules content. Typical derates are between 10-20% off the LP gas rating.  
** Circuits to be moved must be protected by same size breaker. For example, a 15 Amp circuit in the main panel must be a 15 Amp circuit in the trans-  
fer switch.  
2.4.2 — Engine  
Model  
Type of Engine  
8 kW  
11 kW  
16 kW  
20 kW  
22 kW  
GH-410  
1
GT-530  
2
GT-990  
GT-999  
2
GT-999  
2
Number of Cylinders  
Displacement  
2
992 cc  
410 cc  
530 cc  
999 cc  
999 cc  
Cylinder Block  
Aluminum w/Cast Iron Sleeve  
RC14YC  
Recommended Spark Plug  
Spark Plug Gap  
Starter  
RC14YC  
BPR6HS  
RC12YC  
RC12YC  
0.76 mm (0.030 in)  
0.76 mm (0.030 in)  
1.02 mm (0.040 in)  
12 VDC  
0.76 mm (0.030 in)  
0.76 mm (0.030 in)  
Oil Capacity Including Filter Approx. 1.5 Qt/1.4 L Approx. 1.7 Qt/1.6 L Approx. 1.9 Qt/1.8 L Approx. 1.9 Qt/1.8 L Approx. 1.9 Qt/1.8 L  
Recommended Oil Filter  
Recommended Air Filter  
Part #070185E  
Part #0J8478  
Part #0E9371A  
Part #0E9371A  
Part #0J8478  
Part #0J8478  
Engine power is subject to and limited by such factors as fuel Btu/joules content, ambient temperature and altitude. Engine power decreases about 3.5  
percent for each 1,000 feet (304.8 meters) above sea level, and also will decrease about 1 percent for each 6 ºC (10 ºF) above 15 ºC (60 ºF) ambient  
temperature.  
The specification sheet for your generator was included in the documentation provided with the unit at the time of purchase. For additional  
copies, consult your local Authorized Service Dealer for your specific generator model.  
8
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
2.4.3 — Fuel Requirements  
The engine has been fitted with a dual fuel carburetion system. The unit will run on natural gas or LP gas (vapor), but it has been factory set to  
run on natural gas. The fuel system will be configured for the available fuel source during installation.  
Recommended fuels should have a btu content of at least 1,000 Btus per cubic foot (37.26 megajoules per cubic meter) for natural gas, or at  
least 2,500 Btus per cubic foot (93.15 megajoules per cubic meter) for LP gas (vapor).  
If converting to LP gas from natural gas, a minimum LP tank size of 250 gallons (946 liters) is recommended. See the Installation Manual for com-  
plete procedures and details.  
Gaseous fuels such as natural gas and liquid propane gas are highly explosive. Even the  
slightest spark can ignite such fuels and cause an explosion. No leakage of fuel is permitted.  
Natural gas, which is lighter than air, tends to collect in high areas. LP gas is heavier than air  
and tends to settle in low areas  
$
2.4.4 — Battery Requirements  
Group 26R, 12V, minimum 525CCA (Generac Part No. 0H3421S).  
For proper battery maintenance procedures, see Section 4 Maintenance.  
2.4.5 — Battery Charger  
The battery charger is integrated into the control panel module in all models. It operates as a Smart Charger” which ensures output charging lev-  
els are safe and continuously optimized to promote maximum battery life.  
2.4.6 — Engine Oil Requirements  
For proper oil viscosity, see chart in Figure 4-1: Recommended Oil Based on Temperature.  
2.5 — Accessories  
There are performance enhancing accessories available for air-cooled generators.  
Accessory  
Description  
Cold Weather Kit  
Required in areas where temperatures regularly fall below 32 ºF (0 ºC).  
Includes all pieces necessary to perform maintenance on the generator along with oil recommendations.  
Enables any of the transfer switches to completely lock out one large electrical load by tying into its control system.  
Scheduled Maintenance Kit  
Auxiliary Transfer Switch Lock-  
out  
Fascia Skirt Wrap  
Standard on all 22 kW units. It is available for all other current production air-cooled units. It snaps together, around  
the base and mounting pad of the generator, to provide a smoothing, contoured look as well as rodent/insect protec-  
tion. Requires use of the mounting pad shipped with the generator.  
Mobile Link™  
Provides a personalized web portal that displays the generators status, maintenance schedule, event history and  
much more. This portal is accessible via computer, tablet or smart phone. Sends emails and/or text notifications the  
moment there is any change in the generators status. Notification settings can be customized to what type of alert is  
sent and how often. For more information, visit www.standbystatus.com.  
Touch-Up Paint Kit  
Very important to maintain the look and integrity of the generator enclosure. This kit includes touch-up paint and  
instructions.  
Automatic Standby Generator Owner’s Manual  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
Accessory  
Description  
Wireless Local Monitor  
Completely wireless and battery powered, the Wireless Local Monitor provides you with instant status without ever  
leaving the house. Status lights (red, yellow and green) alert owners when the generator needs attention. Magnetic  
backing permits refrigerator mounting and gives a 600 foot line of sight communication.  
Extended Warranty Coverage  
Extend your generators warranty coverage by purchasing the 5 year extended warranty coverage. Covers 5 years  
of both parts and labor. Extended coverage can be purchased within 12 months of the end-users purchase date.  
This extended coverage is applicable to registered units and end-user proof of purchase must be available upon  
request.  
Available for Generac ®, Guardian ® and Centurion ® products.  
Not available for Corepower™ and EcoGen products or all international purchases.  
Contact an independent authorized Dealer for additional information on accessories.  
10  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 3  
Operation  
3.1 — Control Panel Interface  
The control panel on this unit is intended to only be operated by qualified service personnel.  
*
The Control panel interface is located under the lid of the enclosure. Before attempting to lift the lid of the enclosure, verify that both left and right  
side locks are unlocked. To remove the front cover, lift the cover straight up to disengage the side hooks, then tilt and lift it away from the unit.  
When closing the unit, ensure that both left and right side locks are securely locked. See Figure 3-1.  
The enclosed keys provided with this unit are for service personnel usage only.  
*
SIDE LOCK  
Figure 3-1: Generator With Lid Open/Side Lock Location  
Set to AUTO, the engine may crank and start at any time without warning. Such automatic starting  
occurs when utility power source voltage drops below a preset level or during the normal exercise  
cycle. To prevent possible injury that might be caused by such suddenstarts, always set to OFF and  
remove the fuses before working on or around the generator or transfer switch. Then, place a “DO  
NOT OPERATE” tag on the generator panel and on the transfer switch.  
*
NOTE: The generator is to be run with all appropriate panels in place, including during troubleshooting by a technician.  
Automatic Standby Generator Owner’s Manual  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Figure 3-2: Generator Control Panel  
3.2 — Using the Auto/Off/Manual Buttons  
Button  
Description of Operation  
Auto  
Selecting this button activates fully automatic system operation. Automatic operation allows the unit to automatically star  
t
and exercise the generator according to the exercise timer (seethe Setting the Exercise Timer section).  
Off  
This button shuts down the generator and also prevents automatic operation and exercise of the unit.  
Manual  
This button will crank and start the generator. Transfer to standby power will not occur unless there is a utility  
failure.  
NOTE: Damage caused by mis-wiring of the interconnect wires is not warrantable.  
3.3 — Interface Menu Displays  
The LCD display:  
Feature  
Description  
HOME page  
The default page which will be displayed if no buttons are pressed for 60 seconds. This page normally shows the current Status  
message and the current date and time. The highest priority active Alarm/Warning will be automatically posted on this page as  
well as flashing the backlight when such a condition is detected. In the case of multiple Alarms/Warnings, only the first message  
will be displayed. To clear an Alarm or Warning, press the OFF button and then press the ENTER key.  
Display Backlight  
MAIN MENU page  
Normally off. If the operator presses any button, the backlight will automatically light and remain on for 30 seconds.  
Allows the operator to navigate to all other pages or sub-menus by using the Arrows and Enter buttons. This page can be  
accessed at any time with several presses of the dedicated Escape button. Each press of the Escape button takes the operator  
to the previous menu until the MAIN MENU displays. This page contains information for - History; Status; Edit; Debug.  
3.3.1— Menu System Navigation  
To get to the MENU, use the Escape” button from any page. It may require pressing it many times before getting to the MENU page. Navigate to  
the desired menu by using the /buttons. When the desired menu is displayed and flashing, press the Enter” button. See Figure 3-3.  
12  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Figure 3-3: Navigation Menu  
Automatic Standby Generator Owner’s Manual  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
3.4 — Automatic Transfer Operation  
To select automatic operation:  
1. Make sure the transfer switch main contacts are set to their UTILITY position (loads connected to the utility power  
source).  
2. Be sure that normal UTILITY power source voltage is available to transfer switch terminal lugs N1 and N2.  
3. Press the AUTO button on the Control Panel Interface.  
4. Set the Main Circuit Breaker (Generator Disconnect) to its ON (Closed) position.  
With these steps complete, the generator will start automatically when utility source voltage drops below a preset level. After the unit starts, loads  
are transferred to the standby power source.  
3.4.1— Automatic Sequence of Operation  
3.4.1.1 — Utility Failure  
With the generator set to AUTO, when the utility fails (below 65% of nominal) a 10 second (optionally programmable) line interrupt delay time is  
started. If the utility is still gone when the timer expires, the engine will crank and start. Once started, a 5 second engine warm-up timer will be ini-  
tiated. When the warm-up time expires, the controller will transfer the load to the generator. If the utility power is restored (above 75% nominal) at  
any time from the initiation of the engine start until the generator is ready to accept load (5 second warm-up time has not elapsed), the controller  
will complete the start cycle and run the generator through its normal cool down cycle, however, the load will remain on the utility source.  
3.4.1.2 — Cranking  
The system will control the cyclic cranking as follows:  
8 kW unit - 5 cranking cycles as follows: 15 second crank, seven (7) second rest, followed by four (4) additional cycles of seven (7) second  
cranks followed by seven (7) second rests.  
11 - 22 kW units - 5 cranking cycles as follows: 16 second crank, seven (7) second rest, 16 second crank, seven (7) second rest, followed by  
three (3) additional cycles of seven (7) second cranks followed by seven (7) second rests.  
3.4.1.3 — Load Transfer  
The transfer of load when the generator is running is dependent upon the operating mode:  
MANUAL  
Will not transfer to generator if utility is present.  
Will transfer to generator if utility fails (below 65% of nominal for 10 consecutive seconds).  
Will transfer back when utility returns for 15 consecutive seconds. The engine will continue to run  
until removed from the MANUAL mode.  
AUTO  
Will start and run if utility fails for 10 consecutive seconds (factory default).  
Will start a 5 second engine warm-up timer.  
•Will not transfer if utility subsequently returns.  
•Will transfer to generator if utility is not present.  
Will transfer back to utility once utility returns (above 75% of nominal) for 15 seconds.  
Will not transfer back to utility unless utility returns. The generator will shut down if the OFF button is  
pressed or a shutdown alarm is present.  
Once utility power is returned, the generator will shut down after 1 minute cool-down time.  
Will not exercise if generator is already running in either AUTO or MANUAL mode.  
EXERCISE  
During exercise, the controller will only transfer if utility fails during exercise for 10 seconds, and will  
switch to AUTO.  
14  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
3.5 — Turning the Generator Off When Operating Under Load  
NOTE: Important! To turn the generator off during prolonged utility outages to perform maintenance or conserve  
fuel, follow these simple, but important steps:  
To turn the generator OFF (while running in AUTO and online):  
1. Turn OFF (or OPEN) the main Utility disconnect.  
2. Turn OFF (or OPEN) the Main Line Circuit Breaker (MLCB) on the generator. and allow the generator to run for 1  
minute to cool down.  
3. Turn the generator OFF. If the generator is to remain off for more than an hour, remove the 7.5 Amp fuse from the  
control panel to avoid running down the starting battery, if utility is not present.  
To turn the generator back ON:  
1. Put the generator back into AUTO and allow to start and warm-up for a few minutes.  
2. Turn ON (or CLOSE) the MLCB on the generator.  
The system will now be operating in its automatic mode. The main utility disconnect can be turned ON (or CLOSED), but to shut the unit off, this  
complete process must be repeated.  
3.6 — Manual Transfer Operation  
DO NOT attempt to activate the transfer switch manually until all power voltage supplies to the switch have been  
completely turned off. Failure to turn off all power voltage supplies may result in extremely hazardous and possi-  
bly fatal electrical shock.  
Prior to automatic operation, manually exercise the transfer switch to verify that there is no interference with proper operation of the mechanism.  
Manual operation of the transfer switch is required if electronic operation should fail.  
3.6.1— Transfer to Generator Power Source - 100/200 Amp  
1. Press the Control Panel OFF button.  
2. Set the Main Circuit Breaker (Generator  
Disconnect) to its OFF (OPEN) position.  
3. Turn off the utility power supply to the transfer  
switch using the means provided (such as a utility  
main line circuit breaker).  
4. Use the manual transfer handle inside the transfer  
switch to move the main contacts to their STANDBY  
positions (loads connected to the standby power  
source).  
5. To crank and start the engine, press the Control  
Panel MANUAL button.  
6. Allow the engine to stabilize and warm up for a few  
minutes.  
7. Set the Main Circuit Breaker (Generator  
Disconnect) to its ON (CLOSED) position. The  
standby power source now powers the loads.  
Figure 3-4: Manual Transfer Switch Operation  
Automatic Standby Generator Owner’s Manual  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3.6.2— Transfer Back to Utility Power Source  
When utility power has been restored, transfer back to utility source and shut down the generator. To manually transfer back to utility power and  
shut down the generator:  
1. Set the Main Circuit Breaker (Generator Disconnect) to its OFF (OPEN) position.  
2. Allow the engine to run for 2 minutes at no-load to stabilize the internal temperatures.  
3. Press the Control Panel OFF button. The engine should shut down.  
4. Ensure that utility power supply to the transfer switch is turned off.  
5. Use the manual transfer handle inside the transfer switch to move the main contacts back to their UTILITY posi-  
tions (loads connected to the utility power source).  
6. Turn on the utility power supply to the transfer switch using the means provided.  
7. Press the Control Panel AUTO button.  
3.6.3— Transfer to Generator Power Source - 50 Amp  
1. Press the Control Panel OFF button.  
2. Set the Main Circuit Breaker (Generator  
Disconnect) to its OFF (OPEN) position.  
3. Turn off the utility power supply to the transfer  
switch using the means provided (such as a utility  
main line circuit breaker).  
4. Use the manual transfer handle inside the transfer  
switch to move the main contacts to their STANDBY  
positions (loads connected to the standby power  
source).  
5. To crank and start the engine, press the Control  
Panel MANUAL button.  
6. Allow the engine to stabilize and warm up for a few  
minutes.  
7. Set the Main Circuit Breaker (Generator  
Disconnect) to its ON (CLOSED) position. The  
standby power source now powers the loads.  
Figure 3-5: Manual Transfer Switch Operation  
3.6.4— Transfer Back to Utility Power Source  
When utility power has been restored, transfer back to utility source and shut down the generator. To manually transfer back to utility power and  
shut down the generator:  
1. Set the Main Circuit Breaker (Generator Disconnect) to its OFF (OPEN) position.  
2. Allow the engine to run for 2 minutes at no-load to stabilize the internal temperatures.  
3. Press the Control Panel OFF button. The engine should shut down.  
4. Ensure that utility power supply to the transfer switch is turned off.  
5. Use the manual transfer handle inside the transfer switch to move the main contacts back to their UTILITY posi-  
tions (loads connected to the utility power source).  
6. Turn on the utility power supply to the transfer switch using the means provided.  
7. Press the Control Panel AUTO button.  
16  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3.7 — Side Compartment  
Local codes may require this compartment to be locked. A hasp is provided so the owner/operator can secure the compartment with his or her  
own padlock. Check local codes for side compartment locking requirements.  
LED INDICATOR LIGHTS  
15 Amp OUTLET BREAKER  
120V GFCI OUTLET  
MAIN CIRCUIT BREAKER  
Figure 3-6: Open Side Compartment  
3.7.1— Main Circuit Breaker (Generator Disconnect)  
This is a 2-pole breaker rated according to relevant specifications.  
3.7.2— LED Indicator Lights  
Green LED Ready” light is on when utility is present and the Control Panel button is in the AUTO position. This also indicates when the gen-  
erator is running.  
Red LED Alarm” light is on when the generator is OFF or a fault is detected and means contact your authorized servicing dealer.  
Yellow LED “Maintenance” light. Note: Yellow LED may be on at the same time as either the Red or Green LEDs.  
3.7.3— 120V GFCI Outlet/15 Amp Breaker (16-22 kW Only)  
Some units are equipped with an external 15 amp, 120 volt GFCI convenience outlet located in the top corner of the compartment.  
When the generator is running, in the absence of utility power, this outlet may also be used to power items outside the home such as lights or  
power tools. This outlet may also be used when utility power is present by running the generator in manual mode.  
This outlet does not provide power if the generator is not running. Do not use this outlet when the generator is in Exercise mode. This outlet is  
protected by a 15 Amp circuit breaker in the side compartment.  
3.8 — Battery Charger  
NOTE: The battery charger is integrated into the control module in all models.  
The battery charger operates as a Smart Charger” that ensures:  
Output is continually optimized to promote maximum battery life.  
Charging levels are safe.  
NOTE: A warning is displayed on the LCD when the battery needs service.  
Automatic Standby Generator Owner’s Manual  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
3.9 — Setting the Exercise Timer  
This generator is equipped with a configurable exercise timer. There are two settings for the exercise timer. One is Day/Time. Once it is set, the  
generator will start and exercise for the period defined, on the day of the week and at the time of day specified. During this exercise period, the  
unit runs for approximately 5 or 12 minutes, depending on the model, and then shuts down. The other is for the exercise frequency (how often the  
exercise will take place). It can be set to WEEKLY, BIWEEKLY or MONTHLY. If monthly is chosen, the date of the month must be selected and  
the generator will exercise on that day each month.Transfer of loads to the generator output does not occur during the exercise cycle unless util-  
ity power is lost.  
IF THE INSTALLER TESTS THE GENERATOR PRIOR TO INSTALLATION, PRESS THE ENTER” BUTTON TO SKIP SETTING UP THE  
EXERCISE TIMER.  
Table 3-1 details the exercise information and programming options for all Home Standby generators. Figure 3-7 illustrates the engine speed pro-  
file during a typical exercise cycle for 22 kW generators. Figure 3-8 shows the engine speed profile for 16-20 kW generators. 8-11 kW generators  
exercise at a constant 3600 rpm. While providing the necessary periodic exercise operation, the lower rpm also reduces fuel consumption,  
engine wear and noise.  
NOTE: The exercise feature will operate only when the generator is placed in the AUTO mode and will not work unless this procedure  
is performed. The current date/time will need to be reset every time the 12 volt battery is disconnected and then reconnected, and/or  
when the fuse is removed  
Table 3-1: Generator Exercise Characteristics  
Generator Size  
8 kW  
n/a *  
11 kW  
n/a *  
16 kW / 20 kW  
2400 rpm  
22 kW  
1950 rpm  
Low Speed Exercise  
Exercise Frequency  
Options  
Weekly/Bi-Weekly/Monthly  
Weekly/Bi-Weekly/Monthly  
Weekly/Bi-Weekly/Monthly  
Weekly/Bi-Weekly/Monthly  
Exercise Time Length  
12 minutes  
12 minutes  
5 minutes  
5 minutes  
* exercises at 3600 rpm  
Figure 3-7: Low Speed Exercise Profile - 22 kW Units  
18  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Low Speed Exercise PrŽĮůĞ - 16 to 20 kW Generators  
3200  
3000  
2800  
2600  
Figure 3-8: Low Speed Exercise Profile - 16-20 kW units  
Automatic Standby Generator Owner’s Manual  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
This page intentionally left blank.  
20  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 4  
Maintenance  
NOTE: Proper maintenance and proper and safe operation is crucial to the life of the generator. Genuine Generac parts MUST be used  
to ensure warranty coverage  
NOTE: Since most maintenance alerts occur at the same time (most have two year intervals), only one will appear at any one time.  
Clearing one will cause the next active alert to be displayed.  
All service work to this generator must be performed by a qualified service person only.  
*
4.1 — Performing Scheduled Maintenance  
It is important to perform Maintenance as specified in the Service Schedule for proper generator operation and to ensure that the generator com-  
plies with the applicable emission standards for the duration of its useful life. Service and repairs may be performed by any qualified service per-  
son or repair shop. Additionally, emissions critical maintenance must be performed as scheduled in order for the Emissions Warranty to be valid.  
Emissions critical maintenance consists of servicing the air filter and spark plugs in accordance with the Service Schedule. The controller will  
prompt for Schedule A or Schedule B maintenance to be performed. Schedule A maintenance consists of the oil, oil filter and tune-up. Schedule  
B maintenance includes the oil, oil filter, tune-up, air cleaner, spark plug(s) and valve clearance.  
4.2 — Service Schedule  
System Component  
Procedure  
Frequency  
X = Action  
R= Replace as Necessary  
* = Notify Dealer if Repair is Needed  
W = Weekly  
M = Monthly  
Y = Yearly  
Inspect  
Change  
Clean  
Fuel  
Fuel lines and connections*  
Lubrication  
X
X
M
Oil level  
M or 24 hours of continuous operation  
2Y or 200 hours of operation**  
2Y or 200 hours of operation**  
Oil  
X
X
Oil filter  
Cooling  
Enclosure louvers  
X
X
W
Battery  
Remove corrosion, ensure dryness  
Clean and tighten battery terminals  
Check charge state  
Electrolyte level (unsealed batteries only)*  
Engine and Mounting  
Air cleaner  
X
X
X
X
X
X
Y
Y
Y
X
X
Every 6 M  
X
X
X
X
X
400 hours  
400 hours  
Spark plug(s)  
Valve Clearance  
400 hours***  
General Condition  
Vibration, Noise, Leakage*  
Complete Tune-Up*  
* Contact the nearest Dealer for assistance if necessary.  
X
M
independent Authorized Dealer must perform  
2Y or 200 hours  
** Change oil and filter after the first 25 hours of operation. Continue to check at intervals of 200 hours or 2 years, whichever occurs first. Severe duty oil drain inter-  
vals: In cold weather conditions (ambient below 40 ºF/4.4 ºC) change engine oil and filter every year or 100 hours of operation to prevent accumulation of water  
in the oil. If the unit will be operated continuously in hot ambient conditions (ambient above 85 ºF/29.4 ºC), change every year or 100 hours of operation.  
*** Check valve clearance after the first 25 hours of operation. Continue to check at intervals of 400 hours.  
Automatic Standby Generator Owner’s Manual  
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
4.2.1— Maintenance Log  
1. Battery inspection and charge check (recommended every year (1) for the life of the battery)  
NOTE: Check electrolyte level (unsealed batteries only) every 6 months.  
Dates Performed:  
2. Oil, oil filter and air filter replacement (recommended after the first 25 hours after installation and every 200 hours or 2 years, whichever  
occurs first) NOTE: Spark plug replacement (recommended every 4 years or 400 hours, whichever occurs first).  
Dates Performed:  
3. Valve Adjustment (recommended after the first 25 hours of operation and then after every 400 hours of operation)  
Dates Performed:  
4.3 — Checking Engine Oil Level  
When power outages necessitate running the generator for extended periods, the oil level should be checked daily. To check the engine oil level:  
1. If the generator is running during a utility outage, first turn OFF all associated loads running in the residence using the electrical panel's main  
disconnect. Then, turn the generator's Main Circuit Breaker to the OFF position.  
2. Press the Control Panel OFF button. Wait 5 minutes.  
3. Remove the dipstick and wipe it dry with a clean cloth.  
4. Completely insert the dipstick and again remove it.  
5. Observe the oil level. The level should be at the Full” mark on the dipstick.  
6. If necessary, remove the oil fill cap and add oil to the engine until the level reaches the Full” mark and reinsert the dipstick and fill cap.  
7. Press the Control Panel AUTO button.  
8. If the generator was running during a utility outage, first turn the Main Circuit Breaker to the ON position. Then, turn ON the needed loads in  
the residence.  
Never operate the engine with the oil level below the “Add” mark on the dipstick. Doing so could damage the  
engine.  
*
*
Hot oil may cause burns. Avoid prolonged or repeated skin exposure with used oil. Thoroughly wash exposed  
areas with soap.  
22  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
4.3.1— Engine Oil Recommendations  
To maintain the warranty, genuine Generac replacement parts MUST be used, including Generac oil kits (which include an oil and air filter). Gen-  
erac oil kits can be obtained through an Authorized Dealer or purchased on-line. To purchase on-line, access the maintenance kits page through  
www.generac.com or directly at shop.generac.com. Follow the prompts to enter delivery information and complete the purchase.  
All Generac oil kits meet minimum American Petroleum Institute (API) Service Class SJ, SL, or better. Use no special additives. Select the appro-  
priate viscosity oil grade according to the expected operating temperature. Synthetic oil also can be used in the appropriate weight as standard.  
Figure 4-1: Recommended Oil Based on Temperature  
SAE 30 above 32 ºF (0 ºC)  
10W-30 between 40 and -10 ºF (4 and -23 ºC)  
Synthetic 5W-30 for all temperature ranges  
Any attempt to crank or start the engine before it has been properly serviced with the recommended oil may result  
in an engine failure.  
*
4.3.2— Changing the Oil and Oil Filter  
1. Start the engine by pressing the MANUAL button on the control panel and allow the engine to run for 5 minutes. Then, press the Control  
Panel OFF button to shut down the engine.  
2. A few minutes after the engine shuts OFF, when it has cooled slightly, lift the lid and remove the front panel. Pull the oil drain hose free of its  
retaining clip. Remove the cap from the hose and drain the oil into a suitable container.  
3. After the oil has drained, replace the cap onto the end of the oil drain hose. Reposition and secure the hose with the retaining clip.  
4. With the oil drained, remove the old oil filter by turning it counterclockwise. For filter location, see Figure 4-2.  
5. Apply a light coating of clean engine oil to the gasket of the new filter.  
6. Screw the new filter on by hand until its gasket lightly contacts the oil filter adapter. Then, tighten the filter an additional 3/4 to one full turn.  
7. Refill the engine with the proper recommended oil. For recommended oil, see Figure 4-1.  
8. Start the engine, run for 1 minute, and check for leaks.  
9. Shutdown the engine and recheck the oil level. Add oil as needed. DO NOT OVER FILL.  
10. Re-insert dipstick and/or reattach fill cap.  
11. Press the Control Panel AUTO button.  
12. Dispose of the used oil and filter at a proper collection center.  
Automatic Standby Generator Owner’s Manual  
23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Figure 4-2: Oil Filter and Drain Location  
4.4 — Changing the Engine Air Cleaner  
1. With the generator shut down, lift the lid and remove the front panel.  
2. Remove the cover clips and air cleaner cover (11-22 kW), or disengage the wire clip and open the air cleaner access door (8 kW).  
3. Pull out the old air filter and discard.  
4. Thoroughly clean the air cleaner enclosure of any dust or debris.  
5. Install a new air cleaner.  
6. Install the air cleaner cover and cover clips (11-22 kW),or close the air cleaner access door and engage the wire clip (8 kW).  
4.5 — Spark Plugs  
Reset the spark plug(s) gap or replace the spark plug(s) as necessary:  
1. With the generator shut down, lift the lid and remove the front panel.  
2. Clean the area around the base of the spark plug(s) to keep dirt and debris out of the engine.  
3. Remove the spark plug(s) and check the condition. Install a new plug(s) if the old one is worn or if reuse is questionable.  
4. Clean the plug(s) by scraping or washing with a wire brush and commercial solvent. Do not blast the plug(s) to clean.  
5. Check the spark plug gap using a wire feeler gauge. See Figure 4-3. Adjust the gap by carefully bending the ground electrode to:  
For 8, 11, 20 and 22 kW units - 0.76 mm (0.030 in)  
For 16 kW units - 1.02 mm (0.040 in)  
Figure 4-3: Spark Plug Gap Adjustment  
24  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
4.6 — Valve Lash Adjustment  
After the first 25 hours of operation and then after every 400 hours of operation, check the valve clearance. Adjust if necessary.  
Important: Please contact the Dealer for service assistance. This is a very important step to ensure longest life for the engine.  
To check valve clearance:  
The engine should be cool before checking. If valve clearance is 0.002 - 0.004 in (0.05 - 0.1 mm), adjustment is not needed.  
Remove spark plug wires and position wires away from plugs.  
Remove spark plugs.  
Make sure the piston is at Top Dead Center (TDC) of its compression stroke (both valves closed). To get the piston at TDC, remove the intake  
screen at the front of the engine to gain access to the flywheel nut. Use a large socket and socket wrench to rotate the nut and hence the  
engine in a clockwise direction. While watching the piston through the spark plug hole. The piston should move up and down. The piston is at  
TDC when it is at its highest point of travel.  
To adjust valve clearance (see Figure 4-4):  
Make sure the engine is at 60 ° to 80 °F (16 ° to 27 °C).  
Make sure that the spark plug wire is removed from the spark plug and out of the way.  
Remove the four screws attaching the valve cover.  
Loosen the rocker jam nut. Using a 10 mm Allen wrench (530 cc engine) or a 13 mm Allen wrench (410 cc, 990 cc and 999 cc engines), turn  
the pivot ball stud while checking clearance between the rocker arm and the valve stem with a feeler gauge. Correct clearance is 0.002-0.004  
in (0.05-0.1 mm).  
NOTE: Hold the rocker arm jam nut in place as the pivot ball stud is turned.  
When valve clearance is correct, hold the pivot ball stud in place with the Allen wrench and tighten the rocker arm jam nut. Tighten the jam nut  
to 174 in-lb (19.68 N-m) torque. After tightening the jam nut, recheck valve clearance to make sure it did not change.  
Install new valve cover gasket.  
Re-attach the valve cover.  
NOTE: Start all four screws before tightening or it will not be possible to get all the screws in place. Make sure the valve cover gasket  
is in place.  
Torque fasteners to 6-9 ft/lb (8-12 Nm)  
Install spark plugs. Torque to 15-18 ft/lb (20-25 Nm).  
Re-attach the spark plug wire to the spark plug.  
Repeat the process for the other cylinder, if necessary.  
Automatic Standby Generator Owner’s Manual  
25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Rocker  
Arm  
Pivot Ball  
Stud  
Jam Nut  
Valve  
Stem  
Figure 4-4: Valve Clearance Adjustment  
4.7 — Battery Maintenance  
The battery should be regularly inspected per the Service Schedule:  
1. With the generator shut down, lift the lid and remove the front panel.  
2. Inspect the battery posts and cables for tightness and corrosion. Tighten and clean as necessary.  
3. Check the battery fluid level of unsealed batteries, and if necessary, fill with distilled water only. DO NOT use tap water. Also, have the  
Dealer or a qualified Service Technician check the state of charge and condition.  
Do not dispose of the battery by incineration. The battery is capable of exploding.  
$
A battery presents a risk of electrical shock and high short circuit current. Strictly observe the following precau-  
tions when working on batteries:  
+
Remove the 7.5 Amp ATO® fuse from the generator control panel.  
Remove all jewelrywatches, rings, metal objects, etc.  
Use tools with insulated handles.  
Wear rubber gloves and boots.  
Do not lay tools or metallic objects on top of the battery.  
Disconnect the charging source prior to connecting or disconnecting battery terminals.  
26  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Do not open or mutilate the battery. Released electrolyte has been known to be harmful to the skin and eyes, and  
to be toxic. The electrolyte is a dilute sulfuric acid that is harmful to the skin and eyes. It is electrically conductive  
and corrosive. Strictly observe the following precautions:  
*
Wear full eye protection and protective clothing.  
Where electrolyte contacts the skin, wash it off immediately with water.  
Where electrolyte contacts the eyes, flush thoroughly and immediately with water and seek medical attention.  
Wash down spilled electrolyte with an aid neutralizing agent. A common practice is to use a solution of 1 pound (500 grams) bicarbonate  
of soda to 1 gallon (4 liters) of water. The bicarbonate of soda solution is to be added until the evidence of reaction (foaming) has  
ceased. The resulting liquid is to be flushed with water and the area dried.  
Lead-acid batteries present a risk of fire because they generate hydrogen gas. Strictly observe the following pre-  
cautions:  
!
DO NOT smoke when near the battery.  
DO NOT cause flame or spark in the battery area.  
Discharge static electricity from the body before touching the battery by first touching a grounded metal surface.  
Be sure the utility power supply is turned off and the 7.5 Amp fuse is removed from the generator Control Panel,  
or sparking may occur at the battery posts as the cables are attached and cause an explosion.  
$
4.8 — Attention After Submersion  
If the generator has been submerged in water, it MUST NOT be started and operated. Following any submersion in water, have a Dealer thor-  
oughly clean, dry, and inspect the generator. If the structure (home) has been flooded, it should be inspected by a certified electrician to ensure  
there won’t be any electrical problems during generator operation or when utility power is returned.  
4.9 — Corrosion Protection  
Periodically wash and wax the enclosure using automotive type products. Frequent washing is recommended in salt water/coastal areas. Spray  
engine linkages with a light oil such as WD-40.  
4.10 — Out of Service Procedure  
4.10.1— Removal From Service  
If the generator cannot be exercised every 7 days and will be out of service longer than 90 days, prepare the generator for storage:  
1. Start the engine and let it warm up.  
2. Close the fuel shutoff valve in the fuel supply line and allow the unit to shut down.  
3. Once the unit has shut down, set the generators Main Circuit Breaker (Generator Disconnect) to its OFF (OPEN) position.  
4. Turn off the utility power to the transfer switch.  
5. Remove the 7.5 Amp ATO® fuse from the generators Control Panel.  
6. Disconnect the battery cables. Remove negative cable first.  
7. Remove battery charger AC input T1/Neutral cable (has white sleeve) at controller.  
8. While the engine is still warm, drain the oil completely, and then refill the crankcase with oil.  
9. Attach a tag to the engine indicating the viscosity and classification of the new oil in the crankcase.  
10. Remove the spark plug(s) and spray a fogging agent into the spark plug(s)’ threaded openings. Reinstall and tighten the spark plug(s).  
11. Remove the battery and store it in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor.  
12. Clean and wipe down the entire generator.  
Automatic Standby Generator Owner’s Manual  
27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
4.10.2— Return to Service  
To return the unit to service after storage:  
1. Verify that utility power is turned off.  
2. Check the tag on the engine for oil viscosity and classification. If necessary, drain and refill with proper oil.  
3. Check the state of the battery. Fill all cells of unsealed batteries to the proper level with distilled water. DO NOT use tap water. Recharge the  
battery to 100% state of charge. If defective, replace the battery.  
4. Clean and wipe down the entire generator.  
5. Make sure the 7.5 Amp ATO® fuse is removed from the generator Control Panel.  
6. Reconnect the battery. Observe battery polarity. Damage may occur if the battery is connected incorrectly. Install positive cable first.  
7. Reconnect the battery charger AC input T1/Neutral cable (has white sleeve) at controller.  
8. Open the fuel shutoff valve.  
9. Insert the 7.5 Amp ATO® fuse into the generator Control Panel.  
10. Start the unit by pressing the MANUAL button. Allow the unit to warm up for a few minutes.  
11. Stop the unit by pressing the Control Panel OFF button.  
12. Turn on the utility power to the transfer switch.  
13. Set the Control Panel to AUTO.  
The generator is ready for service.  
NOTE: When a battery is dead or has been disconnected, the exercise timer and current date and time must be reset.  
28  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 5  
Troubleshooting  
Problem  
Cause  
Correction  
The engine will not crank.  
1. Fuse blown.  
1. Correct short circuit condition by  
replacing 7.5 Amp fuse in generator  
control panel.  
2. Loose, corroded or defective  
battery cables.  
2. Tighten, clean or replace  
as necessary.*  
3. Defective starter contact.  
4. Defective starter motor.  
5. Dead Battery.  
3. *See #2.  
4. *See #2.  
5. Charge or replace battery.  
The engine cranks but  
will not start.  
1. Out of fuel.  
1. Replenish fuel/Turn on fuel valve.  
2. Defective fuel solenoid (FS).  
3. Defective spark plug(s).  
4. Valve lash out of adjustment.  
2.  
*
3. Clean, re-gap or replace plug(s).  
4. Reset valve lash.  
The engine starts hard  
and runs rough.  
1. Air cleaner plugged  
or damaged.  
1. Check/replace air cleaner.  
2. Defective spark plug(s).  
3. Fuel pressure incorrect.  
2. Clean, re-gap or replace plug(s).  
3. Confirm fuel pressure to regulator  
is 10-12” water column (19-22 mm  
mercury) for LP, and 3.5-7” water  
column (7-13 mm mercury) for  
natural gas.  
4. Fuel selector in wrong position.  
4. Move selector to correct position.  
The generator is set to OFF,  
but the engine continues to  
run.  
1. Controller wired incorrectly.  
2. Defective control board  
1. Repair wiring or replace controller*  
2. Replace controller.  
There is no AC output from  
the generator.  
1. Main line circuit breaker is in  
the OFF (or OPEN) position.  
2. Generator internal failure.  
1. Reset circuit breaker  
to ON (or CLOSED).  
2.  
*
There is no transfer to  
standby after utility  
source failure.  
1. Main line circuit breaker is in the OFF  
(or OPEN) position.  
3. Defective transfer switch coil.  
4. Defective transfer relay  
5. Transfer relay circuit open.  
5. Defective control logic board.  
1. Reset circuit breaker to ON  
(or CLOSED) position.  
3.  
4.  
5.  
5.  
*
*
*
*
Unit consumes large  
amounts of oil.  
1. Engine over filled with oil.  
2. Engine breather defective.  
3. Improper type or viscosity of oil.  
1. Adjust oil to proper level.  
2.  
3. See “Engine Oil  
Recommendations”.  
4. Check for oil leaks.  
*
4. Damaged gasket, seal or hose.  
*Contact an Authorized Service Dealer for assistance.  
Automatic Standby Generator Owner’s Manual  
29  
Download from Www.Somanuals.com. All Manuals Search And Download.  
This page intentionally left blank.  
30  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Section 6  
Quick Reference Guide  
Things to  
Check  
Problem  
LED  
Solution  
Active Alarm  
Unit running in AUTO but no power  
in house.  
Check MLCB. Contact servicing dealer if  
MLCB is in the ON position.  
NONE  
GREEN  
Check MLCB.  
Check the  
LEDs/Screen  
for alarms.  
Check ventilation around the intake,  
exhaust and rear of generator. Contact  
serving dealer if no obstruction is found.  
HIGH  
TEMPERATURE  
Unit shuts down during operation.  
Unit shuts down during operation.  
RED  
RED  
Check the  
LEDs/Screen  
for alarms.  
Clear alarm and remove household  
loads from the generator. Put back in  
AUTO and restart.  
OVERLOAD  
REMOVE LOAD  
Clear alarm and remove household  
loads from the generator. Put back in  
AUTO and restart. If problem returns,  
contact servicing dealer to investigate  
possible fuel issue.  
Check the  
LEDs/Screen  
for alarms.  
RPM SENSE  
LOSS  
Unit was running and shuts down,  
attempts to restart.  
RED  
See if screen  
says unit not  
activated.  
NOT  
ACTIVATED  
Unit will not start in AUTO with utility  
loss.  
Refer to activation section in Owner’s  
Manual.  
NONE  
GREEN  
RED  
Check screen  
for start delay  
countdown.  
If the start up delay is greater than  
expected, contact servicing dealer to  
adjust from 2 to 1500 seconds.  
Unit will not start in AUTO with utility  
loss.  
None  
Check the  
LEDs/Screen  
for alarms.  
Check oil level. Add oil per Owner’s  
Manual. Contact servicing dealer if oil  
level is correct.  
LOW OIL  
PRESSURE  
Unit will not start in AUTO with utility  
loss.  
Clear alarm. From the MAIN menu on  
the control panel, navigate to the BAT-  
TERY MENU. Contact servicing dealer if  
battery is GOOD. Replace battery If  
CHECK BATTERY is displayed.  
Check the  
LEDs/Screen  
for alarms.  
RPM SENSE  
LOSS  
Unit will not start in AUTO with utility  
loss.  
RED  
RED  
Check fuel line shutoff valve is in the ON  
position. Clear alarm. Attempt to start  
the unit in MANUAL. If it does not start  
or starts and runs rough, contact servic-  
ing dealer.  
Check the  
LEDs/Screen  
for alarms.  
Unit will not start in AUTO with utility  
loss.  
OVERCRANK  
Check the  
LEDs/Screen  
for alarms.  
Clear alarm and remove household  
loads from the generator. Put back in  
AUTO and restart.  
LOW VOLTS  
REMOVE LOAD  
Unit will not start in AUTO with utility  
loss.  
RED  
RED  
RED  
RED  
RED  
Check the  
LEDs/Screen  
for alarms.  
Check ATO 7.5 Amp fuse. Replace with  
same type fuse if bad. Contact servicing  
dealer if fuse is good.  
Unit will not start in AUTO with utility  
loss.  
FUSE PROBLEM  
OVERSPEED  
Check the  
LEDs/Screen  
for alarms.  
Unit will not start in AUTO with utility  
loss.  
Contact servicing dealer.  
Contact servicing dealer.  
Contact servicing dealer.  
Check the  
LEDs/Screen  
for alarms.  
UNDER  
VOLTAGE  
Unit will not start in AUTO with utility  
loss.  
Check the  
LEDs/Screen  
for alarms.  
Unit will not start in AUTO with utility  
loss.  
UNDERSPEED  
Automatic Standby Generator Owner’s Manual  
31  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Things to  
Check  
Problem  
LED  
Solution  
Active Alarm  
Check the  
LEDs/Screen  
for alarms.  
STEPPER  
OVERCURRENT  
Unit will not start in AUTO with utility  
loss.  
RED  
Contact servicing dealer.  
Check the  
LEDs/Screen  
for alarms.  
Unit will not start in AUTO with utility  
loss.  
MISWIRE  
RED  
RED  
Contact servicing dealer.  
Contact servicing dealer.  
Check the  
LEDs/Screen  
for alarms.  
Unit will not start in AUTO with utility  
loss.  
OVERVOLTAGE  
Clear alarm. From the MAIN menu on  
the control panel, navigate to the BAT-  
TERY MENU. Contact servicing dealer if  
battery is GOOD. Replace battery If  
CHECK BATTERY is displayed.  
Check screen  
for additional  
information.  
YELLOW  
LOW BATTERY  
Yellow LED illuminated in any state.  
Check screen  
for additional  
information.  
BATTERY  
PROBLEM  
Yellow LED illuminated in any state.  
Yellow LED illuminated in any state.  
Yellow LED illuminated in any state.  
Yellow LED illuminated in any state.  
Yellow LED illuminated in any state.  
YELLOW  
YELLOW  
Contact servicing dealer.  
Contact servicing dealer  
Check screen  
for additional  
information.  
CHARGER  
WARNING  
Check screen  
for additional  
information.  
Perform SERVICE A maintenance;  
press ENTER to clear.  
SERVICE A  
SERVICE B  
YELLOW  
YELLOW  
YELLOW  
Check screen  
for additional  
information.  
Perform SERVICE B maintenance;  
press ENTER to clear.  
Check screen  
for additional  
information.  
Inspect Battery  
Inspect battery; press ENTER to clear.  
32  
Automatic Standby Generator Owner’s Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Notes  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
_____________________________________________________________________________________________  
Download from Www.Somanuals.com. All Manuals Search And Download.  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
____________________________________________________________________________________________  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Part No. 0K5801  
Rev. C 06/18/2014  
Printed in USA  
Generac Power Systems, Inc.  
S45 W29290 Hwy. 59  
Waukesha, WI 53189  
1-888-GENERAC (1-888-436-3722)  
generac.com  
© Generac Power Systems, Inc. All rights reserved  
Specifications are subject to change without notice.  
No reproduction allowed in any form without prior written  
consent from Generac Power Systems, Inc.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Edelbrock Automobile Parts YFZ450 User Manual
ETI Sound Systems INC Stereo Amplifier LG 200AS User Manual
Extron electronic Universal Remote TLP 1000MV User Manual
FMI Indoor Fireplace CGMFN User Manual
Frigidaire Ventilation Hood PLHV42P8KC User Manual
Frigidaire Yard Vacuum FRA08EHTI User Manual
Garland Oven ECO G 10 E User Manual
GE Monogram Washer Dryer WBSR3140 User Manual
Generac Portable Generator 5939 User Manual
Glen Dimplex Home Appliances Ltd Oven BI 90 MF User Manual