Cub Cadet Blower BB40 User Manual

Professional  
Landscaping Tools  
BB40  
BACK PACK  
BLOWER  
IMPORTANT: READ SAFETY RULES AND  
INSTRUCTIONS CAREFULLY  
DO NOT THROW AWAY  
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Section 1  
Safety  
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their  
explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate  
any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.  
SYMBOL  
MEANING  
SAFETY ALERT SYMBOL: Indicates  
danger, warning or caution. Attention is  
required in order to avoid serious personal  
injury. May be used in conjunction with  
other symbols or pictographs.  
Failure to obey a safety warning will result in  
serious injury to yourself or to others. Always  
follow the safety precautions to reduce the risk  
of fire, electric shock, and personal injury.  
NOTE: Advises you of information or instructions  
vital to the operation or maintenance of  
the equipment.  
Failure to obey a safety warning can result in  
injury to yourself and others. Always follow the  
safety precautions to reduce the risk of fire,  
electric shock, and personal injury.  
California Proposition 65 Warning  
THE ENGINE EXHAUST FROM THIS PRODUCT  
CONTAINS CHEMICALS KNOWN TO THE STATE  
OF CALIFORNIA TO CAUSE CANCER, BIRTH  
DEFECTS OR OTHER REPRODUCTIVE HARM.  
Failure to obey a safety warning may result in  
property damage or personal injury to yourself or to  
others. Always follow the safety precautions to  
reduce the risk of fire, electric shock, and personal  
injury.  
Important Safety Instructions  
READ ALL INSTRUCTIONS  
Before Operating  
• Clear the area of children, bystanders, and pets. At  
a minimum, keep all children, bystanders, and pets  
outside a 50 feet (15 m.) radius; there still may be a  
risk to bystanders from thrown objects. Bystanders  
should be encouraged to wear eye protection. If you  
are approached, stop the unit immediately.  
When using the unit, you must follow the safety  
rules. Please read these instructions before  
operating the unit in order to ensure the safety of  
the operator and any bystanders. Please keep  
these instructions for later use.  
Safety Warnings for Gas Units  
Gasoline is highly flammable, and its vapors can  
explode if ignited. Take the following precautions.  
• Read the instructions carefully. Be familiar with the  
controls and proper use of the unit.  
• Do not operate this unit when tired, ill or under the  
influence of alcohol, drugs or medication.  
• Store fuel only in containers specifically designed  
and approved for the storage of such materials.  
They should have an anti-spill valve.  
• Children and teens under the age of 15 must not  
use the unit, except for teens guided by an adult.  
• Always stop the engine and allow it to cool before  
filling the fuel tank. Never remove the cap of the fuel  
tank, or add fuel, when the engine is hot. Never  
operate the unit without the fuel cap securely in  
place. Loosen the fuel tank cap slowly to relieve any  
pressure in the tank.  
• Inspect the unit before use. Replace damaged parts.  
Check for fuel leaks. Make sure all fasteners are in  
place and secure. Replace parts that are cracked,  
chipped or damaged in any way. Check that the  
spark plug and other items are not damaged.  
• Carefully inspect the area before starting the unit.  
Remove all hard or sharp objects such as glass,  
wire, etc.  
• Avoid creating a source of ignition for spilled fuel.  
Do not start the engine until fuel vapors dissipate.  
3
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Safety (continued)  
• Do not operate the engine faster than the speed  
needed to do the job. Do not run the engine at high  
speed when not in use.  
• Add fuel in a clean, well-ventilated outdoor area  
where there are no sparks or flames. Slowly remove  
the fuel cap only after stopping engine. Do not  
smoke while fueling or mixing fuel. Wipe up any  
spilled fuel from the unit immediately.  
• Always stop the engine when operation is delayed or  
when walking from one location to another.  
• Move the unit at least 50 feet (15 m) from the fueling  
source and site before starting the engine. Do not  
smoke. Keep sparks and open flames away from the  
area while adding fuel or operating the unit.  
• Stop the engine for maintenance or repair. The unit  
must be stopped and the impeller no longer turning to  
avoid contact with the rotating blades.  
• Use only original equipment manufacturer  
replacement parts when servicing this unit. These  
parts are available from your authorized service  
dealer. Do not use unauthorized parts, accessories,  
or attachments for this unit. Doing so could lead to  
serious injury to the user, or damage to the unit, and  
void your warranty.  
• Never fill with fuel while the engine is running.  
While Operating  
• Never start or run the unit inside a closed room or  
building. Breathing exhaust fumes can kill. Operate  
this unit only in a well ventilated outdoor area.  
• Never use this unit for spreading chemicals, fertilizers or  
other substances which may contain toxic materials.  
• Wear safety glasses or goggles that are marked as  
meeting ANSI Z87.1-1989 standards. Also wear  
ear/hearing protection when operating this unit.  
Wear a face or dust mask if the operation is dusty.  
Long sleeve shirts are recommended.  
• To reduce fire hazard, replace faulty muffler and  
spark arrestor, keep the engine and muffler free from  
grass, leaves, excessive grease or carbon build up.  
• Never point the blower in the direction of people or  
pets, or in the direction of windows. Always direct the  
blowing debris away from people, animals, and  
windows. Use extra caution when blowing debris near  
solid objects such as trees, automobiles, walls, etc.  
• Wear heavy, long pants, boots or safety footwear  
and protective gloves. Do not wear loose clothing,  
jewelry, short pants, sandals or go barefoot. Secure  
hair above shoulder level.  
• To reduce the risk of hearing loss associated with  
sound level(s), always wear ear/hearing protection  
when operating this unit.  
Other Safety Warnings  
• Always disconnect the spark plug before performing  
maintenance or accessing movable parts.  
• Use the unit only in daylight or good artificial light.  
• Never store the unit, with fuel in the tank, inside a  
building where fumes may reach an open flame (pilot  
lights, etc.) or sparks (switches, electrical motors, etc.).  
• Avoid accidental starting. Be in the starting position  
whenever pulling the starter rope. The operator and  
unit must be in a stable position while starting. See  
Starting/Stopping Instructions.  
• Allow the engine to cool before storing or transporting.  
Be sure to secure the unit while transporting.  
• Do not set unit on any surface except a clean, hard  
area while engine is running. Debris such as gravel,  
sand, dust, grass, etc. could be picked up by the air  
intake and thrown out by the discharge opening,  
damaging unit, property, or causing serious injury to  
bystanders or operator.  
• Store the unit in a dry place, either locked up or up  
high to prevent unauthorized use or damage. Keep  
out of the reach of children.  
• Never douse or squirt the unit with water or any other  
liquid. Keep handles dry, clean, and free from debris.  
Clean after each use, see Cleaning and Storage  
instructions.  
• Use the right tool. Only use this tool for the purpose  
intended.  
• Do not force unit. It will do the job better and with  
less likelihood of injury at a rate for which it was  
designed.  
• Keep these instructions. Refer to them often and use  
them to instruct other users. If you loan this unit to  
others, also loan these instructions to them.  
• Do not overreach or use from unstable surfaces  
such as ladders, trees, steep slopes, rooftops, etc.  
Always keep proper footing and balance.  
SPECIAL NOTE: Exposure to vibrations through  
prolonged use of gasoline powered hand tools could  
cause blood vessel or nerve damage in the fingers,  
hands, and joints of people prone to circulation  
disorders or abnormal swelling. Prolonged use in cold  
weather has been linked to blood vessel damage in  
otherwise healthy people. If symptoms occur such as  
numbness, pain, loss of strength, change in skin color  
or texture, or loss of feeling in the fingers, hands or  
joints, discontinue use of this tool and seek medical  
attention. An anti-vibration system does not guarantee  
avoidance of these problems. Users who operate power  
tools on a regular basis must closely monitor their  
physical condition and the condition of this tool.  
• Always hold the unit with a firm grip when  
operating.  
• Keep hands, face, and feet at a distance from all moving  
parts. Do not touch or try to stop the impeller when it is  
rotating. Do not operate without guards in place.  
• Do not put any object into openings. Do not use  
with any opening blocked; keep free of dirt, debris,  
and anything that may reduce the air flow.  
• Do not touch the engine or muffler. These parts get  
extremely hot from operation. When turned off they  
remain hot for a short time.  
SAVE THESE INSTRUCTIONS  
4
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Safety (continued)  
The Unit’s Protective Safety Equipment  
PROTECTIVE SAFETY EQUIPMENT  
Personal Equipment  
Ear Protection- Wear ear pro-  
tection that offers a sufficient  
dampening effect. Remove your  
hearing protection as soon as  
you stop the engine, in order to  
hear any noises or warning sig-  
nals.  
Stop Switch- Use the stop  
switch to stop the engine. To  
service and test the stop  
switch, start the engine and  
make sure that the engine halts  
when you move the stop switch  
to the off position.  
Vibration Damping System-  
This is designed to make usage  
as vibration-free and comfort-  
able as possible. The vibration  
damping system reduces the  
transfer of vibrations. Check the  
system often for cracks and  
distortion, and make sure it is  
securely attached.  
Eye Protection- Wear safety  
glasses or goggles that are  
marked as meeting ANSI  
Z87.1-1989 standards to pro-  
tect from blows to the eyes  
from branches or flying objects.  
Boots- Wear anti-slip and sta-  
ble boots.  
Clothing- Wear clothes made of  
strong fabrics. Avoid loose  
clothing that could catch on  
shrubs and branches. Wear  
heavy long pants and do not  
wear jewelry, shorts, sandals or  
go barefoot. Secure hair above  
shoulder length.  
Muffler- The muffler reduces  
noise levels and directs the  
engine’s exhaust fumes away  
from the operator. Never use a  
unit that has a defective muffler  
and check to see that the muf-  
fler is secure. Clean the muf-  
fler’s spark arrestor screen reg-  
ularly. Never use a muffler that  
has a defective spark arrestor  
screen. Refer to the Muffler  
section in the Maintenance  
chapter for more information.  
First Aid Kit- Always have a first  
aid kit present.  
Breathing Protection- Wear a  
dust mask if you are working in  
dusty conditions.  
Safety Harness- A well-adjust-  
ed harness considerably simpli-  
fies your work. Adjust the har-  
ness to provide you with the  
most efficient stance. Adjust  
the side straps to equally dis-  
tribute the weight of the unit  
across both of your shoulders.  
Never use a unit that has defective safety  
equipment. Maintain the safety equipment as  
described. If the safety equipment and/or the  
unit is defective or fails your control tests,  
contact your local service workshop.  
Never use the unit without the safety harness in  
tact. Failure to use the harness will make the  
unit less safe and increase the risk of injury to  
yourself or others. Never use a harness that has  
a faulty quick release.  
5
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Safety (continued)  
Safety and International Symbols  
This operator's manual describes safety and international symbols and pictographs that may appear on this product.  
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.  
SYMBOL  
MEANING  
SYMBOL  
MEANING  
• KEEP BYSTANDERS AWAY  
• SAFETY ALERT SYMBOL  
WARNING: Keep all bystanders,  
especially children and pets, at  
least 50 feet (15 m.) from the  
operating area.  
Indicates danger, warning, or  
caution. May be used in  
conjunction with other symbols or  
pictographs.  
• WARNING - READ  
OPERATOR'S MANUAL  
• ON/OFF STOP CONTROL  
ON / START / RUN  
Read the Operator’s Manual(s)  
and follow all warnings and safety  
instructions. Failure to do so can  
result in serious injury to the  
operator and/or bystanders.  
• ON/OFF STOP CONTROL  
OFF or STOP  
• WEAR EYE AND HEARING  
PROTECTION  
WARNING: Thrown objects and  
loud noise can cause severe eye  
injury and hearing loss. Wear eye  
protection meeting ANSI Z87.1-  
1989 standards and ear  
protection when operating this  
unit. Use a full face shield when  
needed.  
The following symbols/decals refer to certain  
certification requirements in certain markets:  
Carry out maintenance and  
performance checks when the  
engine is switched off, with the  
stop switch in the Stop position.  
• CE  
This product is in accordance with  
applicable CE directives.  
Always wear approved  
protective gloves.  
• WEAR APPROVED  
PROTECTIVE GLOVES  
Regular cleaning is required.  
Ocular control.  
• USE ANTI-SLIP, STABLE BOOTS  
• THROWN OBJECTS &  
ROTATING IMPELLOR BLADE  
CAN CAUSE INJURY  
Approved eye protection must  
WARNING: Keep clear of blower  
outlet. Never point the blower at  
yourself or others. Objects can be  
thrown from blower. Do not  
operate unit without proper  
attachments and guards in place.  
always be used. Wear eye  
protection meeting ANSI Z87.1-  
1989 standards.  
6
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Section 2  
Know Your Unit  
12  
1
11  
2
10  
3
9
4
8
7
5
6
Blower Components  
1 - Spark plug  
2 - Choke  
3 - Starter handle  
4 - Muffler  
5 - Fuel tank  
6 - Fuel cap  
7 - Stop switch  
8 - Throttle lever / control  
9 - Blow tube  
10 - Nozzle  
11 - Air filter  
12 - Shoulder Harness  
7
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Section 3  
Assembly Instructions  
F
A
C
B
E
D
Assembling the Blower  
Unpacking  
Your unit was carefully packed at the factory to  
prevent damage during shipment. Unpack the carton  
carefully:  
Carton Contents  
F - Engine Assembly  
1 - Hose Clamp with Screw (2)  
2 - Flexible Tube  
3 - Base Tube  
1. Remove all contents from the carton.  
4 - Middle Tube  
2. Identify parts and check them with the list of parts  
in the above Carton Contents section.  
5 - Bent Tube / Nozzle  
3. Examine parts for damage.  
4. Immediately notify your dealer if a part is missing  
or damaged.  
1
2
Tube Assembly  
1. Place a hose clamp on each end of the flexible  
tube (A).  
3
2. Connect the flexible tube (A) to the fan’s outlet  
tube (B).  
3. Slide the grooved end of the base tube (C) into the  
open end of the flexible tube and securely tighten  
the screws on the clamps.  
4
NOTE: The base tube is designed to swivel. This  
allows you to direct air flow. To avoid the  
tube slipping out, the base, middle and  
bent tubes must be tightly and perfectly  
inserted up to each stopper.  
4. Install the middle tube (D) into the base tube, and  
install the bent tube / nozzle (E) into the middle  
tube.  
5
5. Adjust the shoulder strap to fit your body  
comfortably.  
8
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Section 4  
Oil and Fuel  
NOTE: This unit is equipped with a 2-stroke  
engine that must always run on a mixture  
of gas and oil. It is important to measure  
the quantity accurately, to ensure the  
correct mixing ratio. Small discrepancies in  
the amount of oil have a great bearing on  
the fuel mix proportions when mixing a  
small amount of fuel.  
Mixture/Fueling  
• Always mix fuel and oil in a  
clean container that is  
intended for fuel.  
• Always begin by filling the  
container with half the  
amount of fuel required.  
Then add the entire oil  
quantity. Mix (by shaking)  
the mixture, and then fill the  
container with the remaining  
amount of fuel.  
Oil and Fuel Mixing  
Instructions  
Old and/or improperly mixed  
fuel are the main reasons for  
the unit not running properly.  
Be sure to use fresh, clean  
unleaded fuel. Follow the  
instructions carefully for the  
proper fuel/oil mixture.  
• Mix the fuel mixture careful-  
ly, before pouring it into the  
fuel tank.  
• Do not mix more than one  
month’s supply of fuel.  
Gas Information  
• If you don’t use the unit for  
a long period of time, you  
must empty and clean the  
tank.  
The lowest recommended  
octane rating is 87. If you run  
the engine with gas with a  
lower octane than 87,  
“knocking” can occur. This  
leads to an increase in engine  
temperature, which can result  
in a serious engine breakdown.  
• When fueling, be sure to  
clean around the fuel cap.  
Contamination in the tank  
can disrupt operations.  
• Ensure that fuel is mixed  
thoroughly by shaking the  
container before filling the  
unit’s fuel tank.  
When working at continuous  
high revs, a higher octane  
gasoline is recommended.  
2-stroke Oil  
For best results, use 2-stroke  
oil that has been specifically  
produced for use in small engines.  
Mixing ratio is 1:50 (2%).  
Remove fuel cap slowly to avoid injury from fuel  
spray. Never operate the unit without the fuel  
cap securely in place.  
Contact your dealer  
when selecting an oil.  
Mixing ratio is 1:33 (3%).  
Never use 2-stroke oil  
that is intended for  
water-cooled outboard  
motors (referred to as  
outboard motor oil).  
Add fuel in a clean, well ventilated outdoor area.  
Wipe up any spilled fuel immediately. Avoid  
creating a source of ignition for spilt fuel. Do not  
start the engine until fuel vapors dissipate.  
Never use oil intended  
for 4-stroke engines.  
NOTE: Dispose of the old fuel/oil mix in  
accordance to Federal, State and Local  
regulations.  
Gasoline is extremely flammable. Ignited Vapors  
may explode. Always stop the engine and allow  
it to cool before filling the fuel tank. Do not  
smoke while filling the tank. Keep sparks and  
open flames at a distance from the area.  
9
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Section 5  
Operation  
Starting Instructions  
Stop Switch  
1. Mix gas with oil. Fill fuel tank with fuel/oil mixture.  
See Oil and Fuel Mixing Instructions.  
2. Put the Stop Switch in the START position.  
3. Place the choke lever up into the CHOKE/CLOSE  
position.  
4. Fully press and release the primer bulb (air purge  
diaphragm) 10 times, slowly, until fuel is visible in  
the primer bulb. If you can’t see fuel in the bulb,  
press and release the bulb as many times as it  
takes before you can see fuel in it. The bulb  
doesn’t have to be completely filled.  
4. Press the machine body against the ground using  
your left hand. Do not use your foot. This is the  
starting position.  
Close  
5. Grip the starter handle, and slowly pull out the  
starter rope with your right hand until you feel  
some resistance. After you feel resistance, quickly  
and powerfully pull the starter cord.  
Open  
6. As soon as the engine fires, reset the choke lever  
down into the OPEN position. Pull the cord until  
the engine starts.  
7. When the engine starts, quickly move the throttle  
to the full throttle position.  
NOTE: Do not pull the starter rope out completely.  
Do not suddenly release the starter cord  
from the fully extended position. These  
actions could damage the unit.  
NOTE: Choking is unnecessary when starting a  
warm engine. Put the Stop Switch in the ON  
position, and leave the choke lever in the its  
original position. Pull the starter rope.  
Stopping Instructions  
1. Allow the engine to cool down by idling.  
2. Put the Stop Switch in the STOP (O) position.  
Operate this unit only in a well ventilated  
outdoor area. Carbon monoxide exhaust fumes  
can be lethal in a confined area.  
Using the Throttle  
Air jet speed is controlled with the throttle. Select the  
speed that best suits the application. You can set the  
throttle to the desired / required throttle position by  
moving the throttle lever up or down. Move it up to  
blow more air, and move it down to idle.  
Avoid accidental starting. Make sure you are in  
the starting position when pulling the starter  
rope. To avoid serious injury, the operator and  
unit must be in a stable position while starting.  
Blow  
Idle  
10  
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Operation (continued)  
• Operate power equipment only at reasonable  
hours— not early in the morning or late at night  
when people might be disturbed. Comply with times  
listed in local ordinances. Usual recommendations  
are 9:00 am to 5:00 pm, Monday through Saturday.  
Holding the Blower/Vacuum  
Before operating the unit, stand in the operating  
position. Check for the following:  
• Operator is wearing proper clothing, such as boots,  
safety glasses or goggles, ear/hearing protection,  
gloves, long pants and long sleeve shirt  
• To reduce noise levels, limit the number of pieces of  
equipment used at any one time.  
• To reduce noise levels, operate power blowers at  
the lowest possible speed to do the job.  
To avoid serious personal injury, wear goggles or  
safety glasses at all times when operating this  
unit. Wear a face mask or dust mask in dusty  
locations.  
• Check your equipment before operation, especially  
the muffler, air intakes and air filters.  
• Use rakes and brooms to loosen debris before  
blowing.  
• If the conditions are dusty, the operator is wearing a  
dust mask or face mask  
• In dusty conditions, slightly dampen surfaces or use  
a mister attachment when water is available.  
• Conserve water by using power blowers instead of  
hoses for many lawn and garden applications,  
including areas such as gutters, screens, patios,  
grills, porches, and gardens.  
• The unit is in good working condition  
• The tubes and guards are in place and secure  
• Watch out for children, pets, open windows or  
freshly washed cars, and blow debris safely away.  
To prevent serious personal injury or damage to  
the unit, make sure blower tubes or vacuum tubes  
and the vacuum bag are in place before you  
operate the unit.  
• Use the full blower nozzle extension so the air  
stream can work close to the ground.  
• Make sure the air intake is not blocked. A blocked  
intake will reduce the air blowing capacity and  
increase the engine’s temperature.  
Operating Tips  
• Be sure the vacuum bag is zipped closed before  
operating the unit.  
• Do not operate the blower while standing on a  
ladder.  
• Assure the unit is not directed at anybody or any  
loose debris before starting the unit.  
• Clean up after using blowers and other equipment.  
Dispose of debris appropriately.  
• Verify that the unit is in good working condition. Make  
sure the tubes and guards are in place and secure.  
1. Use the blower for trees, shrubs, flower beds and  
hard-to-clean areas.  
• Always hold the unit with both hands when  
operating. Keep a firm grip on both the front and  
rear handle or grips.  
2. Use the unit around buildings and for other normal  
cleaning procedures.  
3. Use the blower around walls, overhangs, fences  
and screens.  
• To reduce the risk of hearing loss associated with  
sound level(s), hearing protection is required.  
11  
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Section 6  
Maintenance  
Always wear protective gloves during  
maintenance operations. Do not carry out  
maintenance when the engine is hot.  
To avoid serious personal injury, always turn  
your blower off and allow it to cool before you  
clean or service it.  
Weekly Maintenance  
Daily Maintenance  
1. Clean the unit’s exterior.  
1. Check the starter, the starter rope/cord, and the  
return spring.  
2. Check that the throttle control functions safely.  
3. Check that the stop switch is functioning properly.  
4. Clean the air filter.  
2. Make sure that the vibration damping elements are  
not damaged.  
3. Clean the outside of the spark plug. Remove and  
check the electrode gap. Remove and check the  
electrode gap. Adjust the gap to 0.5 mm or  
change out the spark plug.  
5. Check that all the nuts and screws are tightened.  
4. Clean the cooling fins on the flywheel.  
5. Clean or replace the muffler’s spark arrest screen.  
6. Clean the carburetor area.  
1
2
7. Clean the cooling fins on the cylinder and check  
that the air intake in the starter unit is unblocked.  
3
4
1
2
3
5
7
6
5
4
Monthly Maintenance  
1. Clean the fuel tank.  
1
2
3
2. Clean the carburetor and its surrounding area.  
3. Clean the fan and its surrounding area.  
4. Check the fuel filter and the fuel pipe. Replace  
them if necessary.  
5. Check all cables and connections.  
6. Change the spark plug.  
6
4
7
7. Check and clean the muffler’s spark arrestor  
screen if necessary (this is not present on mufflers  
with catalytic converters).  
5
12  
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Maintenance (continued)  
Muffler  
NOTE: Some mufflers are fitted with a catalytic  
converter. Refer to the Specifications to  
determine whether your unit is fitted with a  
catalytic converter.  
Only start and use the unit when it is completely  
constructed. If you use the unit without all its  
covers fitted, you risk serious personal injury.  
The muffler is designed to  
dampen the noise level of  
the engine, and to direct  
exhaust fumes away from  
the user. Exhaust fumes  
are hot and contain  
sparks, which can result in  
fire if the fumes are direct-  
ed towards dry material.  
To prevent this, some  
mufflers are equipped  
with a spark arrestor  
screen.  
Carburetor  
The unit’s engine is broken in  
after it has run through 8-10  
tanks of fuel. To ensure the  
engine’s peak performance,  
you should have your engine  
serviced by an authorized  
dealer after it has been broken  
in. The service technician uses  
a revolution counter to adjust  
the carburetor for optimum  
operating conditions. This will  
help the unit produce the least  
amount of emissions.  
If your unit has a spark  
arrestor screen, you must  
clean it regularly. Clean  
the screen with a wire  
brush.  
On mufflers without a cat-  
alytic converter, clean the  
screen weekly, or replace  
it. On mufflers configured  
with a catalytic converter,  
you should check and  
clean the spark arrestor  
screen monthly.  
Operation  
The carburetor governs engine speed, through the  
throttle. Air and fuel are mixed in the carburetor, and  
this mixture is adjustable. This adjustment must be  
accurate in order to take advantage of the engine’s  
optimal output.  
The carburetor should be set to adapt to local  
conditions, like altitude, climate, gas, and the type of  
2-stroke oil used.  
if the screen is damaged,  
you must replace it. If the screen is blocked frequently,  
an impaired catalytic converter may be to blame. if this  
is the case, contact your local dealer to inspect the  
muffler. A blocked spark arrestor screen will cause the  
engine to overheat, possibly damaging the cylinder  
and piston.  
Basic Setting  
The carburetor is configured at a basic setting at the  
factory, before it ships to the customer. This basic  
setting is richer than the optimal setting. You should  
keep the basic setting during the unit’s first working  
hours. Afterwards, the carburetor needs to be finely  
tuned by a skilled technician.  
Fine Adjustment  
After the engine has been broken in, it should be finely  
adjusted by a qualified technician. First adjust the L-  
jet, then the idling T screw, and then the H-jet.  
Never operate a unit that has a defective muffler.  
Conditions  
Before making any adjustments, be sure the air filter is  
clean and the air filter cover is properly fitted. Any  
carburetor adjustment performed with a dirty air filter  
will result in a leaner mixture when compared with the  
engine performance once the air filter is cleaned. This  
can lead to serious engine damage.  
13  
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Maintenance (continued)  
Cooling System  
Air Filter  
To maintain as low of an  
operating temperature as  
possible, the engine is  
equipped with a cooling  
system. The cooling sys-  
tem consists of:  
The air filter should be  
cleaned regularly to remove  
dust and dirt. This will help  
avoid:  
• Carburetor malfunction  
• Problems with starting  
1. An air intake on the  
starter unit.  
• Unnecessary wear to  
engine parts.  
2. Cooling fins on the  
flywheel.  
• Abnormal fuel  
consumption  
3. Cooling fins on the  
cylinder.  
Clean the filter after every 25 hours of operation, or  
more regularly if operating conditions are excessively  
dusty.  
4. A cylinder cover that  
leads cold air onto the  
cylinder.  
Cleaning the Air Filter  
Dismantle the air filter cover and remove the air filter.  
Wash the filter in clean, warm soapy water. Ensure  
that the filter is dry before you refit it. An air filter that  
has been used for a long period of time can never  
become completely clean. From time to time, it is  
necessary to replace the filter with a new one. You  
must always replace a damaged air filter.  
Using a brush, clean the cooling system at least once  
a week. In difficult conditions, clean it more regularly.  
Spark Plug  
The condition of the spark  
plug is affected by:  
If you use your unit in dusty places, you should soak  
the air filter in oil.  
• An incorrect carburetor  
setting  
Oiling the Air Filter  
• An incorrect fuel mixture  
(too much faulty oil)  
The air filter contains a  
solvent that enables the oil  
to spread evenly through-  
out the filter. Therefore,  
avoid skin contact with the  
filter.  
• A dirty air filter  
These factors can cause  
deposits on the spark plug  
electrode. This may result  
in a malfunction or starting  
difficulties.  
To apply oil, place the fil-  
ter in a plastic bag and  
pour the oil over the filter.  
Knead the plastic bag to  
distribute the oil. Squeeze  
any excess oil out of the  
filter inside the plastic  
bag. Pour off the excess  
before you fit the filter into  
the unit.  
NOTE: If the unit is low on power, difficult to start,  
or runs poorly while idling, always check  
the spark plug first.  
If the spark plug is dirty, clean it and check that it has  
a 0.5 mm electrode gap. Change the spark plug after  
one month of operation, or earlier.  
NOTE: Always use the recommended type of  
spark plug. An incorrect spark plug can  
damage the cylinder and piston.  
Never use common engine oil. This could drain  
through the filter quickly and collect in the bottom.  
14  
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Section 11  
Specifications  
ENGINE*  
Engine Type ........................................................................................................................... Air-Cooled, 2-Cycle  
Cylinder Capacity ..................................................................................................................................... 40.2 cm3  
Cylinder Bore............................................................................................................................................... 40 mm  
Stroke Length.............................................................................................................................................. 32 mm  
Idle Speed .............................................................................................................................................. 2,500 rpm  
Recommended Maximum Speed .......................................................................................................... 7,500 rpm  
Maximum Engine Output (according to ISO 8893)..................................................................... 2 kW/7,500 r/min  
Ignition Type/Manufacturer............................................................................................................... Electronic/ET  
Ignition Switch................................................................................................................................. Rocker Switch  
Spark Plug....................................................................................................................................... NGK BPMR7A  
Spark Plug Gap........................................................................................................................... 0.02 in. (0.5 mm)  
Lubrication .................................................................................................................................... Fuel/Oil Mixture  
Fuel/Oil Ratio ....................................................................................................................................................50:1  
Carburetor/Manufacturer........................................................................................................ Membrane / Walbro  
Fuel Tank Capacity....................................................................................................................................1.6 pints  
Catalytic Converter ............................................................................................................................................ No  
OTHER SPECIFICATIONS*  
Approximate Unit Weight (without fuel) ........................................................................................................... 8 Kg  
Noise pressure level (measured according to EN31806 and ISO 7917) ........................................................... 89 dB(A)  
Noise power level (measured according to EN 31806 and ISO 10884) ....................................................... 103.5 dB(A)  
Vibration levels on handles (measured according to EN 31806 and ISO 7916)  
Vibrations when idling ................................................................................................................. max of 1.2 m/s2  
Vibrations at maximum speed..................................................................................................... max of 1.2 m/s2  
*All specifications are based on the latest product information available at the time of printing. We reserve the  
right to make changes at any time without notice.  
15  
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MANUFACTURER’S LIMITED WARRANTY FOR:  
The limited warranty set forth below is given by Cub  
Cadet Commercial LLC with respect to new  
merchandise purchased and used in the United  
States, its possessions and territories.  
No implied warranty, including any implied  
warranty of merchantability or fitness for a  
particular purpose, applies after the applicable  
period of express written warranty above as to  
the parts as identified. No other express warranty  
or guaranty, whether written or oral, except as  
mentioned above, given by any person or entity,  
including a dealer or retailer, with respect to any  
product shall bind Cub Cadet Commercial LLC  
During the period of the Warranty, the exclusive  
remedy is repair or replacement of the product as  
set forth above. (Some states do not allow  
limitations on how long an implied warranty lasts, so  
the above limitation may not apply to you.)  
The provisions as set forth in this Warranty  
provide the sole and exclusive remedy arising  
from the sales. Cub Cadet Commercial LLC shall  
not be liable for incidental or consequential loss  
or damages including, without limitation,  
expenses incurred for substitute or replacement  
lawn care services, for transportation or for  
related expenses, or for rental expenses to  
temporarily replace a warranted product. (Some  
states do not allow limitations on how long an  
implied warranty lasts, so the above limitation may  
not apply to you.)  
Cub Cadet Commercial LLC warrants this product  
against defects in material and workmanship for a  
period of two (2) years commencing on the date of  
original purchase and will, at its option, repair or  
replace, free of charge, any part found to be defective  
in material or workmanship. This limited warranty  
shall only apply if this product has been operated and  
maintained in accordance with the Operator’s Manual  
furnished with the product, and has not been subject  
to misuse, abuse, commercial use, neglect, accident,  
improper maintenance, alteration, vandalism, theft,  
fire, water or damage because of other peril or natural  
disaster. Damage resulting from the installation or use  
of any accessory or attachment not approved by Cub  
Cadet Commercial LLC for use with the product(s)  
covered by this manual will void your warranty as to  
any resulting damage. This warranty is limited to  
ninety (90) days from the date of original retail  
purchase for any Cub Cadet Commercial product  
that is used for rental or commercial purposes, or any  
other income-producing purpose.  
HOW TO OBTAIN SERVICE: Warranty service is  
available, WITH PROOF OF PURCHASE  
THROUGH YOUR LOCAL AUTHORIZED SERVICE  
DEALER. To locate the dealer in your area, visit our  
a listing in the Yellow Pages, call 1-877-282-8684  
or write to P.O. Box 361131, Cleveland, OH 44136-  
In no event shall recovery of any kind be greater than  
the amount of the purchase price of the product  
sold. Alteration of the safety features of the product  
shall void this Warranty. You assume the risk and  
liability for loss, damage, or injury to you and your  
property and/or to others and their property arising  
out of the use or misuse or inability to use the  
product.  
0019  
.
This limited warranty does not provide  
coverage in the following cases:  
This limited warranty shall not extend to anyone  
other than the original purchaser, original lessee or  
the person for whom it was purchased as a gift.  
A. Tune-ups  
-
Spark Plugs, Carburetor  
Adjustments, Filters  
How State Law Relates to this Warranty: This  
warranty gives you specific legal rights, and you may  
also have other rights which vary from state to state.  
To locate your nearest service dealer dial 1-877-282-  
8684.  
B. Wear items  
-
Bump Knobs, Outer  
Spools, Cutting Line, Inner Reels, Starter  
Pulley, Starter Ropes, Drive Belts  
C. Cub Cadet Commercial LLC does not extend  
any warranty for products sold or exported  
outside of the United States of America, its  
possessions and territories, except those sold  
through Cub Cadet Commercial’s authorized  
channels of export distribution.  
Cub Cadet Commercial  
LLC  
Cub Cadet Commercial LLC reserves the right to  
change or improve the design of any Cub Cadet  
Commercial Product without assuming any obligation  
to modify any product previously manufactured.  
P.O. Box 361131  
Cleveland, OH 44136-0019  
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