Multiquip Saw MP24 User Manual

OPERATION MANUAL  
MP2 SERIES  
MODELS  
MP25E1  
MP25E3  
MP275E3  
MP2H  
MASONRY SAWS  
(5HP 1Ø ELECTRIC MOTOR)  
(5HP 3Ø ELECTRIC MOTOR)  
(HONDA GX270QWH2 GASOLINE ENGINE)  
Revision #0 (01/26/09)  
To find the latest revision of this  
publication, visit our website at:  
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.  
P/N: 38262  
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SILICOSIS/RESPIRATORY WARNINGS  
WARNING WARNING  
SILICOSIS WARNING  
RESPIRATORY HAZARDS  
Grinding/cutting/drilling of masonry, concrete, metal and  
other materials with silica in their composition may give  
off dust or mists containing crystalline silica. Silica is a  
basic component of sand, quartz, brick clay, granite and  
numerous other minerals and rocks. Repeated and/or  
substantial inhalation of airborne crystalline silica can  
cause serious or fatal respiratory diseases, including  
silicosis. In addition, California and some other  
authorities have listed respirable crystalline silica as a  
substance known to cause cancer. When cutting such  
materials, always follow the respiratory precautions  
mentioned above.  
Grinding/cutting/drilling of masonry, concrete, metal and  
other materials can generate dust, mists and fumes  
containing chemicals known to cause serious or fatal  
injury or illness, such as respiratory disease, cancer,  
birth defects or other reproductive harm. If you are  
unfamiliar with the risks associated with the particular  
process and/or material being cut or the composition of  
the tool being used, review the material safety data  
sheet and/or consult your employer, the material  
manufacturer/supplier, governmental agencies such as  
OSHA and NIOSH and other sources on hazardous  
materials. California and some other authorities, for  
instance, have published lists of substances known to  
cause cancer, reproductive toxicity, or other harmful  
effects.  
Control dust, mist and fumes at the source where  
possible. In this regard use good work practices and  
follow the recommendations of the manufacturers or  
suppliers, OSHA/NIOSH, and occupational and trade  
associations. Water should be used for dust  
suppression when wet cutting is feasible. When the  
hazards from inhalation of dust, mists and fumes cannot  
be eliminated, the operator and any bystanders should  
always wear a respirator approved by NIOSH/MSHA for  
the materials being used.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 3  
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TABLE OF CONTENTS  
MP2 SERIES  
MASONRY SAWS  
Proposition 65 Warning .............................................2  
Silicosis/Respiratory Warnings ..................................3  
Table Of Contents .....................................................4  
Specifications ............................................................6  
Dimensions ...............................................................7  
Safety Message Alert Symbols ............................. 8-9  
Rules For Safe Operation ................................. 10-12  
General Information ................................................13  
Controls And Components................................ 14-15  
Electric Motor Components ....................................16  
Gasoline Engine Components ................................17  
Pre-Setup (Electric Motors) .............................. 18-20  
Pre-Setup (Gasoline Engine) ............................ 21-22  
Startup/Shutdown (Electric Motors)........................23  
Startup/Shutdown (Gasoline Engine) ............... 24-25  
Operation ................................................................26  
Maintenance (Saw) ........................................... 27-29  
Maintenance (Gasoline Engine) ....................... 30-31  
Engine Wiring Diagram ...........................................32  
Troubleshooting - Blade ..........................................33  
Troubleshooting (Gasoline Engine) .................. 34-35  
Troubleshooting (Electric Motor) .............................36  
Specification and part number  
are subject to change without  
notice.  
NOTE  
PAGE 4 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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NOTES  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 5  
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SPECIFICATIONS  
Table 1. Saw Specifications  
MP25E3  
Saw Model  
Approximate Weight  
Blade Capacity  
Cutting Depth  
MP25E1  
MP275E3  
MP2H  
415 lbs. (188 kg)  
20 in. blade maximum  
8 in. with 20 in. blade  
Blade Speed  
2,240 RPMs  
2200 RPMs  
Mechanical/Centrifugal  
Water Pump  
Water Pump  
115V/60Hz, Thermally protected  
Table 2. Electric Motor/Engine Specifications  
Saw Model  
MP2H  
MP25E1  
MP25E3  
MP275E3  
Engine/Motor  
Honda GX270QWH2  
4-Stroke OHV Single  
Cylinder  
Type  
3.0 x 2.3 in. (77 xx 58  
mm)  
Bore x Stroke  
Displacement  
Max Output  
16.5 cu. in. (270 cc)  
5HP  
Heavy Duty  
Electric  
230V  
Single Phase  
60 Hz  
5HP  
Heavy Duty  
Electric  
230V  
Three Phase  
60 Hz  
7.5HP  
Heavy Duty  
Electric  
230V  
Three Phase  
60 Hz  
9.0HP (6.7 KW) @  
3600 RPM  
1.59 US Gal. (6.0  
liters)  
Fuel Tank Cap.  
Fuel  
Unleaded Gasoline  
1.16 US Qt. (1.1  
liters)  
Amps F.L  
12.0  
Amps F.L  
12.0  
Amps F.L  
12.0  
Lube Oil Cap.  
Speed Control  
Method  
Centrifugal Fly-  
Weight Type  
Starting Method  
Recoil Start  
14.0 x 16.9 x 16.1 in.  
(355 x 430 x 410 mm)  
Dimension  
Dry Net Weight  
55.1 lbs. (25.0 kg)  
PAGE 6 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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DIMENSIONS  
Figure 1. MP2 Dimensions  
TABLE 3. DIMENSIONS  
DESCRIPTION  
REFERENCE LETTER  
DIMENSION (mm)  
Max Length  
48 In. (1219 mm)  
61 In. (1549 mm)  
68 In. (1727 mm)  
23 In. (584 mm)  
34.5 In. (876 mm)  
4.5 In. (114 mm)  
18 In. (457 mm)  
13.5 In. (343 mm)  
2.5 In. (63.5 mm)  
A
Max Height (Electric Models)  
B
Max Height (Gasoline Models)  
Max Width  
C
D
E
F
G
H
I
Tray Height  
Tray Depth  
Splash Shield Opening  
Cart Length  
Cart Height  
Cart Width  
MS 2090 HP  
MS 2050 E1  
MS 2050 E3  
24 In. (610 mm)  
526 lbs. (239 Kg)  
501 lbs. (227 Kg)  
526 lbs. (239 Kg)  
WEIGHTS  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 7  
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SAFETY MESSAGE ALERT SYMBOLS  
FORYOUR SAFETY ANDTHE SAFETY OF OTHERS!  
HAZARD SYMBOLS  
Potential hazards associated with operation of the pump will  
be referenced with Hazard Symbols which appear throughout  
this manual, and will be referenced in conjunction with Safety  
Message Alert Symbols. Some examples are listed below:  
Safety precautions should be followed at all times when  
operating this equipment. Failure to read and understand  
the Safety Messages and Operating Instructions could result  
in injury to yourself and others.  
This Owner's Manual has  
been developed to provide  
complete instructions for the  
safe and efficient operation of  
the MP2 Saw.  
WARNING - Guards and Covers In Place  
NOTE  
NEVER operate the saw without blade  
guards and covers in place. Adhere to  
safety guidelines ANSI American  
National Standards Institute, OSHA or  
other applicable local regulations.  
For engine maintenance information, please refer to the  
engine manufacturers instructions for data relative to its safe  
operation.  
WARNING - Rotating Blade  
Before using this MASONRY SAW, ensure that the  
operating individual has read and understands all  
instructions in this manual.  
Rotating blade can cut and crush.  
Keep hands and feet clear.  
SAFETY MESSAGE ALERT SYMBOLS  
The three (3) Safety Messages shown below will inform you  
about potential hazards that could injure you or others. The  
Safety Messages specifically address the level of exposure  
to the operator, and are preceded by one of three words:  
DANGER, WARNING, or CAUTION.  
WARNING - Burn Hazards  
Engine components can generate  
extreme heat. To prevent burns, DO  
NOT touch these areas while the engine  
is running or immediately after  
operations. NEVER operate the engine  
with heat shields or heat guards  
removed.  
DANGER  
You WILL be KILLED or SERIOUSLY injured if you  
DO NOT follow directions.  
WARNING  
WARNING - Rotating Parts  
You CAN be KILLED or SERIOUSLY injured if you DO  
NOT follow directions.  
NEVER operate equipment with  
covers, or guards removed. Keep  
fingers, hands, hair and clothing  
away from all moving parts to prevent  
injury.  
CAUTION  
You CAN be injured if you DO NOT follow directions.  
PAGE 8 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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SAFETY MESSAGE ALERT SYMBOLS  
HAZARD SYMBOLS - Gasoline Powered Models  
WARNING - Accidental Engine Starting  
ALWAYS place the engine ON/  
OFF switch in the OFF position,  
when the saw is not in use.  
WARNING - Lethal Exhaust Gases  
Engine exhaust gases contain  
poisonous carbon monoxide. This  
gas is colorless and odorless, and  
can cause death if inhaled. NEVER  
operate this equipment in a confined  
area or enclosed structure that does  
not provide ample free flow air.  
WARNING - Over Speed Conditions  
NEVER tamper with the factory  
settings of the engine governor or  
settings. Personal injury and damage  
to the engine or equipment can result  
if operating in speed ranges above  
maximum allowable.  
WARNING - Explosive Fuel  
Gasoline is extremely flammable, and  
its vapors can cause an explosion if  
ignited. DO NOT start the engine near  
spilled fuel or combustible fluids. DO  
NOT fill the fuel tank while the engine  
is running or hot.  
CAUTION - Respiratory Hazard  
ALWAYS wear approved respiratory  
protection that complies with ANSI-  
Z87.1.  
DO NOT overfill tank, since spilled fuel could ignite if  
it comes into contact with hot engine parts or sparks  
from the ignition system. Store fuel in approved  
containers, in well-ventilated areas and away from  
sparks and flames. NEVER use fuel as a cleaning  
agent.  
CAUTION - Sight and Hearing Hazards  
ALWAYS wear approved eye and  
hearing protection that complies  
with ANSI-Z87.1  
This saw, other property, or  
the surrounding environment  
NOTE  
CAUTION - Equipment Damage Messages  
could be damaged if you do  
not follow instructions.  
Other important messages are provided throughout this  
manual to help prevent damage to your concrete saw,  
other property, or the surrounding environment.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 9  
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RULES FOR SAFE OPERATION  
Safety - Gasoline Powered Engines  
WARNING - READTHIS MANUAL  
NEVER touch the hot exhaust  
manifold, muffler or cylinder.Allow  
these parts to cool before servicing  
the saw.  
Failure to follow instructions in this manual may lead to  
serious injury or even death! This equipment is to be  
operated by trained and qualified personnel only! This  
equipment is for industrial use only.  
The following safety guidelines should always be used  
when operating the MP2 Saw. Unless otherwise noted,  
these guidelines refer to saws with gasoline powered  
engines.  
HighTemperatures – Allow the engine to cool before adding  
fuel or performing service and maintenance functions. Contact  
with hot! components can cause serious burns.  
Safety  
DO NOT operate or service this  
equipment before reading this entire  
manual.  
The engine of this saw (gasoline model only) requires an  
adequate free flow of cooling air. NEVER operate the saw in  
any enclosed or narrow area  
This equipment should not be operated by persons under  
18 years of age.  
where free flow of the air is  
restricted. If the air flow is  
restricted it will cause serious  
damage to the saw's engine  
and may cause injury to  
people. Remember the saw's  
NEVER operate the saw without proper  
protective clothing, shatterproof glasses, steel-  
toed boots and other protective devices required  
by the job.  
engine gives off DEADLY  
carbon monoxide gas.  
ALWAYS stop the engine before servicing, adding fuel and  
oil.  
NEVER operate this equipment when not  
feeling well due to fatigue, illness or  
taking medicine.  
ALWAYS refuel in a well-ventilated  
area, away from sparks and open  
flames.  
NEVER operate the saw under the  
influence or drugs or alcohol.  
NEVER use accessories or attachments, which are not  
recommended by Multiquip for this equipment. Damage  
to the equipment and/or injury to user may result.  
ALWAYS use extreme caution when  
working with flammable liquids.When  
refueling, stop the engine and allow it to cool.  
Manufacturer does not assume responsibility for any  
accident due to equipment modifications. Unauthorized  
equipment modification will void all warranties.  
NEVER smoke around or near the  
machine. Fire or explosion could result from  
fuel vapors, or if fuel is spilled on a hot!  
engine.  
Whenever necessary, replace nameplate, operation and  
safety decals when they become difficult read.  
ALWAYS check the saw for loosened threads or bolts  
before starting.  
Topping-off to filler port is dangerous, as it tends to spill fuel.  
NEVER operate the saw in an explosive atmosphere where  
fumes are present or near combustible materials. An  
explosion or fire could result causing severe bodily harm  
or even death.  
ALWAYS service air cleaner frequently to prevent carburetor  
malfunction.  
NEVER run the engine without the air filter. Severe engine  
damage could occur.(Gasoline powered engines)  
NEVER use fuel as a cleaning agent.  
PAGE 10 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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RULES FOR SAFE OPERATION  
Safety - Electric Powered Models  
ALWAYS keep clear of rotating or moving parts while  
operating the saw.  
ALWAYS connect the motor to a power source in  
compliance with all local electrical codes. This must be  
performed by a licenced electrician.  
ALWAYS store equipment properly when it is not being  
used. Equipment should be stored in a clean, dry location  
out of the reach of children.  
ALWAYS use only outdoor approved GROUNDED  
extension cords.  
NEVER use accessories or attachments which are not  
recommended by the manufacturer for this equipment.  
Damage to the equipment and/or injury to user may result.  
MAKE CERTAIN the power cord/extension cord is free  
from damage and that the grounding circuit is operational.  
MAKE CERTAIN the extension cord used is intended to  
be used in the environment you will be using it in. If an  
extension is used, NEVER submerge the connection in  
water. To reduce the risk of electrical shock, always make  
water-tight connections.  
WARNING - Clear Area Of Obstructions  
ALWAYS check to make sure that the  
operating area is clear before starting the  
engine.  
MAKE CERTAIN the "ON/OFF" switch is in the "OFF"  
position before plugging in the power cord/extension cord  
to avoid accidental starting.  
Blade Safety  
ALWAYS stop the motor before servicing. MAKE  
CERTAIN the motor is stopped and turned "OFF" at the  
switch, and the power cord is disconnected from the  
power source.  
Use appropriate blades manufactured for use on masonry  
saws.  
Always inspect blades before each  
use. The blade should exhibit no  
cracks, dings, or flaws in the steel  
centered core and/or rim. Center  
(arbor) hole must be undamaged  
and true.  
Use only the guage wire and length of cord recommended  
for the motor size.  
When cutting, ALWAYS be aware of the location of the  
cord.  
Examine blade flanges for damage, excessive wear and  
cleanliness before mounting blade. Blade should fit  
snugly on the shaft and against the inside/outside blade  
flanges.  
General Safety  
ALWAYS read, understand, and follow procedures in  
Operator's Manual before attempting to operate  
equipment.  
Ensure the blade is marked with an operating speed  
greater than the blade shaft speed of the saw.  
ALWAYS be sure the operator is familiar with proper  
safety precautions and operating techniques before using  
the saw.  
Only cut the material that is specified by the blade. Read  
the specifications of the blade to ensure the proper tool  
has been matched to the material being cut.  
NEVER leave the machine unattended while running.  
Block the unit when leaving or when using on a slope.  
Always keep blade guards in place.  
Exposure of the blade must not  
exceed 180 degrees.  
ALWAYS check to make sure that the operating area is  
clear before starting the engine.  
Maintain this equipment in a safe operating condition at  
all times.  
NEVER touch or try to stop a  
moving blade with your hands.  
ALWAYS keep hands clear of the  
blade.  
AVOID wearing jewelry or loose fitting clothing that may  
snag on the controls or moving parts, this can cause a  
serious injury.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 11  
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RULES FOR SAFE OPERATION  
SawTransportation Safety  
Ensure that the blade does not come into contact with the  
ground or surface during transportation. DO NOT drop the  
blade on ground or surface.  
Use an appropriate lifting equipment to ensure the safe  
movement of the saw.  
The engine governor is designed to permit maximum engine  
speed in a no-load condition. Speeds that exceed this limit  
may cause the blade to exceed the maximum safe allowable  
speed.  
DO NOT use the handles as lifting points.  
Safeguard against extreme saw attitudes relative to level. An  
engine tipped to extreme angles may cause oil to gravitate  
into the cylinder head making the engine start difficult.  
(Gasoline powered engines)  
Ensure that the blade is mounted for proper operating  
direction.  
NEVER transport the saw with the blade mounted.  
Saw Maintenance (Cleaning)  
ALWAYS clean the saw before maintenance or repair.  
Emergencies  
DO NOT use aggressive cleaners (i.e.containing solvents).  
DO NOT use high pressure water jets, aggressive detergents  
or solutions and liquids with a temperature exceeding 86 F.  
Use a fluff-free cloth only.  
ALWAYS  
know the  
location of the nearest fire  
extinguisher.  
Use a cloth which may be lightly moistened only for removing  
dust and dirt. Hard packed dirt can be removed with a soft  
brush.  
NEVER let water, cleaning liquid or vapor penetrate into the  
electric motor, connectors, plugs, and switches. When  
cleaning cover all apertures or openings on all electrical  
components.  
ALWAYS know the location of the  
nearest and first aid kit.  
ALWAYS use a soft, low-pressure water jet and a brush to  
rinse dirt and incrustations away. Be particularly careful not  
to spray water on sensitive parts of of the saw (e.g. electric  
motor, ON/OFF switch).Clean the motor and ON/OFF switch  
by wiping with a moist cloth.  
In emergencies always know the location of the  
nearest phone or keep a phone on the job site.  
Also know the phone numbers of the nearest  
ambulance, doctor and fire department. This  
information will be invaluable in the case of an  
emergency.  
DO NOT rinse the bearings of the drive elements (gasoline  
model only).  
PAGE 12 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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GENERAL INFORMATION  
MP2 Saw  
Overview of Features  
The MP2 Saw is designed for vigorous wet-cutting masonry  
applications.The heavy-duty steel conveyor cart and ball bearing  
roller wheels ensure material stability and smooth travel. In  
addition a reinforced jig-welded steel frame provides rigidity for  
cutting accuracy and long service life.  
5 HP, 230VAC , 60 Hz heavy duty electric motors with overload  
protection.  
9 HP Honda GX270 gasoline engine.  
20-inch blade capacity provides 5-inch depth of cut.  
Rugged steel conveyor cart for optimum stability.  
This saw is available with either an electric motor or a gasoline  
engine. Two heavy duty electric motors are available: a 5 HP  
230V single phase or 5 HP 230V three phase, all with overload  
protectiom.  
Open back design permits capability of cutting large  
materials.  
Ergonomically designed cutting head provides operator  
relief in high tempo operations.  
If desired, the MP2 Saw can be configured with a 9.0 HP Honda  
GX270 gasoline engine.  
Welded fork pockets for easy transportation.  
All MP2 saw models include a high flow water pump, cutting jig,  
water hoses and associated plumbing to enable the operator to  
begin wet cutting.  
Rubber-matted cutting table helps hold the material being  
cut in place while resisting vibrations for smoother cuts with  
less chipping.  
Dry Cutting Applications  
Cutting table marked in inches (ruler) for precision cuts.  
Stay-level blade guard for operator safety.  
The MP2 Saw masonry saw is shipped from the factory for wet-  
cutting saw applications, however it can be used for dry-cutting  
saw applications (see dry-cutting saw applications in this  
manual).The most important thing to remember is to disconnect  
the water pump.The water pump is cooled by the flow of water,  
and failure to disconnect the pump (when running dry) will cause  
pump failure. NEVER! have the water pump engaged when dry  
cutting applications are involved.  
Rigid steel frame minimizes vibrations and assures accurate  
cutting.  
MechanicalWater Pump Kit (Gasoline Model Only)  
Electric SubmersibleWater Pump Kit (Electric Models Only).  
Blade Applications  
This saw has been designed to incorporate the use of diamond  
blades as the cutting tool.The optimum performance of this saw  
is best evidenced by using 20-inch (508 mm) diamond blades  
that match the material being cut. Ask your dealer, or call  
Multiquip about your specific cutting application.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 13  
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CONTROLS AND COMPONENTS  
Figure 3. MP2 Saw (Gasoline Models)  
PAGE 14 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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CONTROLS AND COMPONENTS  
15. ElectricWater Pump – For best results place the pump  
between the splash shield and the rear of the water tray.  
This is for electric models only. Plug water pump power  
cord into AC receptacle on electric motor conduit box.  
NEVER run pump dry.Pump must be immersed in water.  
Figure 3 shows the location of the basic controls or components  
for the MP2 Saw. Listed below is a brief explanation of each  
control or component.  
1. Ruler Backstop – When cutting, place material against  
backstop.Use measurement rail (ruler) to determine where  
material is to be cut.  
16. Blade Raise/Lower Crank Handle – Use this handle to  
set the maximum cutting depth of the MP2 Saw.Turn clock-  
wise to LOWER the blade. Turn counter-clock-wise to  
RAISE the blade.  
2. Miter Box – For angled cuts, place the lip of the miter box  
on the measurement rail with the threaded thumb knob  
facing you and tighten.  
17. Blade Raise/Lower Foot Pedal – Step on the pedal to  
lower the blade for cutting. Gently step off the pedal to raise  
the blade when finished cutting.  
3. WaterTray – When wet cutting is required, fill with clean  
fresh water.Make sure the water pump is totally immersed  
in water before cutting.  
18. SpringTensioner – Connects to the foot pedal bar to allow  
for an easy up and down movement of the mounting plate  
and blade.  
4. Cutting Head Handle – Grab hold of this handle to control  
the movement of the cutting head as you step on the Blade  
Raise/Lower Foot Pedal.  
19. Forklift Pockets – Use to easily move the MP2 Saw from  
one location to another.When moving the saw, ensure that  
the forks pass completely through the pockets on both sides  
of the machine before attempting to lift the MP2.  
5. Blade Guard – Protects the user from the cutting blade.  
NEVER operate the saw with the blade guard removed.  
6. Spindle Bolt/Outside Blade Flange – When mounting  
of the cutting blade is required, remove the spindle bolt  
and outside blade flange. Align cutting blade with inside  
flange arbor and reassemble spindle and outside blade  
flange.  
20. MechanicalWater Pump – This pump is used on gasoline  
models only. Saw is shipped from the factor for wet cutting  
applications (pump handle down). Place pump handle  
upwards to disengage pump. NEVER run pump dry.  
7. Power ON/OFF Box – This box is used on electric models  
saws only.To turn on the saw place in the ON (I) position.  
Place in the OFF (0) position to shut-down the saw.  
21. Engine The gasoline model saws uses a 9.0 HP Honda  
GX270, 4-stroke, OHV, single cylinder, air cooled gasoline  
engine.  
8. V-belt Cover – Remove this cover to access the drive  
V-belt. NEVER operate the saw with the V-belt cover  
removed.  
22. V-belt Cover (Gasoline Only) – Remove this cover to  
access the engine shaft-side V-belt. NEVER operate the  
saw with theV-belt cover removed.  
9. Electric Motor/Conduit Box– This unit uses 2 different  
types of electric motors and voltages (see Table 2). Plug  
the water pump (electric models only) power cord into the  
AC receptacle located on the conduit box.  
23. Water Lines – Replace the clear vinyl tubing water lines  
when they become brittle, worn or clogged. Water kits are  
available through your dealer.  
24. Strainer – For best results place the strainer between the  
splash shield and the rear of the water tray. This is for  
gasoline models only.NEVER run pump dry.Strainer must  
be immersed in water.  
10. Mounting Plate – Supports the electric motor/gasoline  
engine. Plate has slotted holes for horizontal (right-side)  
and vertical (left-side) adjustment of cutting head.  
11. Mounting Plate Handle – Grip this handle (rear) to lift the  
25. Priming Bulb – Squeeze this bulb to prime the mechanical  
mounting plate.  
water pump (gasoline models only).  
12. Tie Rod – The tie rod length has been set at the factory for  
best blade guard position for the majority of the cutting that  
will be done.  
26. BladeWrench – Use this tool to mount and remove cutting  
blade.  
13. Splash Guard – Keeps water and debris from leaving the  
water tray.  
14. Stopper – Place stopper in tray when filling with water.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 15  
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ELECTRIC MOTOR COMPONENTS  
Figure 4. Electric Motor Components  
Heavy Duty Electric Motors  
The MP2 Saw can be equipped with several different models of electric motors. Figure 4 shows the basic components of  
the electric motor. Refer to the manufacturers electric motor manual for instructions & details of operation and servicing.  
1. Electric Motor – The MP2 saw can be operated with  
either a Single Phase orThree Phase 230V motor.Only  
qualified electricians should service the motor.  
4. Water Pump AC Power Receptacle – Plug the electric  
water pump into this receptacle to provide power to the  
pump during saw operation. Unplug the electric water  
pump from this receptacle when dry cutting.  
WARNING -WiringThree Phase Motors  
5. Electric Motor Wiring Pigtail – The saw motor ships  
with cable "pigtails." Have an licenced electrician supply  
and install the appropriate NEMA connector.  
All saws equiped with three phase motors should be wired  
by a qualified electrician and correct motor rotation verified  
before operating the saw.  
DANGER - Electrocution Hazard  
2. Power ON/OFF Box – To turn on the saw, place switch  
in the ON position. Place in the OFF position to  
shutdown the saw.  
NEVER grab or touch a live  
power cord with wet hands, the  
possibility exists of electrical  
shock, ectrocution, and even  
death!  
3. Electric Motor Reset Switch – This switch is part of  
the thermal overload protection for the electric motor.If  
the motor overheats and shuts down, press this switch  
to reset the motor, after allowing the motor to cool  
down.This is used on Single phase electric saws only.  
NEVER use a damaged or worn extension cable when  
connecting to a power source. Defective cables may  
cause damage to the saw's electric motor or electrical  
shock.  
PAGE 16 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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GASOLINE ENGINE COMPONENTS  
Honda GX270QWH2 Gasoline Engine  
The engine (Figure 5) must be checked for proper lubrication  
and filled with fuel prior to operation. Refer to the  
manufacturers engine manual for instructions & details of  
operation and servicing.  
1. FuelTank/Fuel Filler Cap Holds unleaded gasoline.  
For additional information refer to engine owner's  
manual. Remove this cap to add unleaded gasoline to  
the fuel tank. Make sure cap is tightened securely. DO  
NOT over fill.  
DANGER - Explosive Fuel Hazard  
Adding fuel to the tank should be done  
only when the engine is stopped and  
has had an opportunity to cool down.  
In the event of a fuel spill, DO NOT  
attempt to start the engine until the  
Figure 5. Engine Controls and Components  
fuel residue has been completely wiped up, and the  
area surrounding the engine is dry.  
Operating the engine without an  
air filter, with a damaged air filter,  
NOTE  
2. Throttle Lever – Used to adjust engine RPM speed  
(lever advanced forward SLOW, lever back toward  
operator FAST).  
or a filter in need of replacement  
will allow dirt to enter the engine,  
causing rapid engine wear.  
3. Engine ON/OFF Switch – ON position permits engine  
starting, OFF position stops engine operations.  
4. Recoil Starter (pull rope) – Manual-starting method.  
Pull the starter grip until resistance is felt, then pull  
briskly and smoothly.  
8. Spark Plug – Provides spark to the ignition system.  
Set spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch)  
Clean spark plug once a month.  
5. Fuel Valve Lever – OPEN to let fuel flow, CLOSE to  
9. Muffler Used to reduce noise and emissions  
stop the flow of fuel.  
6. Choke Lever – Used in the starting of a cold engine,  
or in cold weather conditions. The choke enriches the  
fuel mixture.  
DANGER - Burn Hazard  
Engine components can generate  
extreme heat. To prevent burns, DO  
NOT touch these areas while the engine  
is running or immediately after  
operating. NEVER operate the engine  
with the muffler removed.  
7. Air Cleaner – Prevents dirt and other debris from  
entering the fuel system. Remove wing-nut on top of  
air filter cannister to gain access to filter element.  
10. Oil Level Cap and Dipstick – Check engine oil with  
engine stopped and in a level position.  
11. Oil Drain Bolt – Drain used oil while the engine is warm.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 17  
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PRE-SETUP (ELECTRIC MOTORS)  
Pre-Setup  
WARNING - Shut-down Saw for Cleaning  
5. Insert the water pump power plug into the outlet  
receptacle on the electric motor conduit box as shown  
in Figure 7.  
Whenever cleaning, adjusting or lubricating any part  
of the saw, MAKE CERTAIN to place the power ON/  
OFF switch in the OFF position and disconnect the  
plug from the power source.  
Assembly (Electric Powered Saws Only)  
1. Remove the MP2 Saw from its container and place it  
on a stable, level surface. Make sure location you  
choose can support the weight of the saw. The saw  
location should be rigid and stationary so that the saw  
will not move, sag, or sway due to the vibrations and  
movements of the saw.  
Figure 7. Water Pump Power Connection  
For three-phase motors, you may be required to install  
a plug on the end of the water pump power cable, which  
should have 3 wires exposed. Have a qualified electrician  
install a male plug that has bee properly rated for the  
equipment(230V).  
2. Connect the barb fitting to the water pump. Attach the  
clear plastic water hose (Figure 6) coming from the blade  
guard to the water pump.  
Once a plug has been installed, insert the power plug  
into the receptacle plug cord attached to the motor.  
(Electric Motor Components, item 3)  
3. Fill the water tray with clean fresh water. The water  
pump intake must always be fully covered by water.  
Also, keep the pump intake free of sludge, debris and  
other materials that may accumulate in the tray.  
Conveyor Cart Placement  
1. Place the conveyor cart across the water tray as shown  
in Figure 8. Align the wheels of the cart with the outer  
edge of the water tray. Push the cart back and forth, it  
should move freely in both directions.  
4. Make certain that the water hose will not come in  
contact with the blade or interfere with any moving  
parts. The best location for the water pump/strainer is  
between the splash shield and the rear of the water  
tray. This will prevent some of the abrasive particles  
from flowing through the pump.  
Figure 6. WaterTray/Water Pump  
Figure 8. Conveyor Cart Placement  
PAGE 18 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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PRE-SETUP (ELECTRIC MOTORS)  
5. Specifications - Ensure that the blade specifications,  
size, and diameter properly match up to sawing  
operations. Utilizing a blade not matched properly to  
the task may result in poor performance and/or blade  
damage.  
WARNING - Inspect the Blade before Cutting  
Failure to thoroughly inspect the  
blade for operational safety could  
result in damage to the blades or the  
saw and may cause serious injury  
to the user or others in the operating  
area. Inspect the blade flanges and  
shaft for damage before installing the  
blade.  
6. Arbor Hole - It is essential that the arbor hole diameter  
properly matches the blade, and that it is free from  
distortion. Correct blade flanges (collars) must be used.  
The inside face of the flanges must be clean and free of  
debris. An out-of-round arbor condition will cause  
damage to the blade and the saw.  
Saw Blades  
7. Max RPM - This RPM reference is the maximum safe  
Diamond Blades are recommended for your saw. Ask your  
MQ dealer about your specific cutting application.  
operating speed for the blade selected. NEVER exceed  
the max RPM on the diamond blade. Exceeding the  
maximum RPM is dangerous and may cause poor  
performance and may damage the blade.  
Saw Blade Definitions (Figure 9)  
1. Stress Relief Holes (Gullets) - Check the steel core  
for cracks that may have propagated from the slots and/  
or gullets. Cracks indicate extreme fatigue failure and if  
Blade Installation  
1. Use the blade bolt wrench (Figure 10) supplied with the  
sawing  
continues,  
saw to install the cutting blade.  
catastrophic failure will  
occur.  
2. Ensure the capacity of the blade guard matches the  
diameter of your cutting blade.  
3. Using the blade nut wrench, remove the blade shaft bolt  
and outside blade flange. Install the cutting blade onto  
the inside blade flange arbor.Re-install the outside blade  
flange and blade shaft bolt.Tighten securely.DO NOT over  
tighten.  
Figure 9. Diamond Blade  
2. Edge of the Steel Core - Check the diameter edge for  
discoloration (blue oxidation) indicating an overheating  
condition caused by insufficient cooling water/air.  
Overheating of blades may lead to loss of core tension  
and/or increase the possibility for blade failure. Make  
sure the steel core's width is uniform about the rim of  
the blade, and not succumbing to an "under-cutting"  
condition brought about by highly abrasive material or  
improper under-cutting core protection.  
3. Directional Arrow - Ensure that the blade is oriented  
properly on the blade shaft for sawing. Reference the  
directional arrow on the blade and place it so the direction  
of rotation "downcuts" with the turn of the shaft.  
4. Diamond Segment or Rim - Ensure there are no  
cracks, dings, or missing portions of the diamond  
segment/rim. DO NOT use a blade that is missing a  
segment or a portion of the rim. Damaged and /or  
missing segments/rims may cause damage to your saw  
or injury to the user or others in the operating area.  
Figure 10. Blade Placement  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 19  
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PRE-SETUP (ELECTRIC MOTORS)  
Connecting the Power (Figure 10)  
CAUTION - Grounding Electric Motors  
1. Place the power ON/OFF switch (Figure 11) in the OFF  
ALWAYS use a grounded (3-wire) extension cord and  
MAKE CERTAIN that the motor is connected to a  
properly grounded electric circuit. If possible use a  
ground fault circuit interrupter to protect the operator  
from possible electric shock.  
position (down).  
4. The MP2 Saw is now ready for wet cutting.  
Dry Cutting (Electric Saws Only)  
1. Un-plug the water pump power cord from the outlet  
receptacle on the electric motor conduit box.  
Figure 11. Power ON/OFF Switch (OFF)  
2. Connect an extension cord (Figure 13) of adequate  
current carrying capacity to the power plug on the  
electric motor.  
CAUTION - Dry Cutting &Water Pump  
NEVER dry cut with the pump connected to a AC power  
source. Running the pump dry will damage the pump.  
Always disconnect the pump's power cord when dry  
cutting.  
DANGER - Electrocution Hazard  
NEVER grab or touch a live power  
cord with wet hands, the possibility  
exists of electrical shock,  
ectrocution, and even death!  
2. The MP2 Masonry Saw is now ready for dry cutting.  
NEVER use a damaged or worn  
extension cable when connecting  
to a power source. Defective cables may cause damage  
to the saw's electric motor or electrical shock.  
CAUTION - Dry Cutting &Water Pump  
MAKE CERTAIN that the correct size extension cord  
is used.Undersize wires will burn out motors.UseTable  
4 to determine the correct extension cord size.  
TABLE 4. EXTENSION CORD SIZES  
50'  
LONG  
75'  
LONG  
100'  
LONG  
MOTOR  
VOLTAGE  
5HP - SINGLE PHASE  
5HP - 3 PHASE  
230  
230  
460  
No. 10  
No. 12  
No. 14  
No. 8  
No. 10  
No. 12  
No. 6  
No.. 8  
No. 10  
5HP - 3 PHASE  
7.5HP - 3 PHASE  
7.5HP - 3 PHASE  
230  
460  
No. 10  
No. 12  
No. 8  
No.  
No.  
6
8
No. 10  
PAGE 20 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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PRE-SETUP (GASOLINE ENGINE)  
Pre-Setup  
CAUTION - Shut-down Saw for Cleaning  
The mechanical water pump is  
NOTE  
shipped from the factory for dry  
cutting applications.  
Whenever cleaning, adjusting or lubricating any part  
of the saw, MAKE CERTAIN to stop the engine and  
disconnect the spark plug wire from the spark plug.  
Wet Cutting Setup (Gasoline Only)  
To connect the mechanical water pump to the drive V-  
belts for Wet Cutting, perform the following:  
The MP2 Saw gasoline model utilizes some of the same  
procedures that are used for the electric models. Please  
reference pages 20 and 21 for the below referenced  
procedures:  
1. Loosen the 2 hex head cap screws (Figure 12) that  
secure the pump mount bracket.  
Conveyor Cart Placement  
Blade Selection and Inspection  
Saw Blades  
2. Push the pump handle downward to engage the pump.  
The drive belt should have approximately 1/8 to 3/16  
inch belt deflection.  
Blade Installation  
3. Tighten the 2 hex head cap screws that secure the  
pump mount bracket.  
Assembly (Gasoline Powered Saws Only)  
1. Remove the saw from its container and place it on a  
stable, level surface. Make sure location you choose  
can support the weight of the saw. The saw location  
should be rigid and stationary so that the saw will not  
move, sag, or sway due to the vibrations and  
movements of the saw.  
2. The gasoline powered saw uses a mechanical water  
pump.This pump operates by drawing power from the  
drive V-belts, and has been adjusted dry cutting  
operation when shipped from the factory.  
3. Fill the water tray with clean fresh water. The water  
pump intake (strainer) must always be fully covered  
by water to operate effectively. Also, keep the pump  
intake free of sludge, debris and other materials that  
may accumulate in the tray.  
Figure 12. Pump Engage  
4. With the engine running, squeeze the water pump  
priming bulb (Figure 13) until water begins to flow  
through the water lines.If the pump is working correctly,  
the cutting blade should be covered with a steady water  
mist. This will keep the blade cool while cutting.  
4. Make certain that the water hose will not come in  
contact with the blade or interfere with any moving  
parts. The best location for the water pump/strainer is  
between the splash shield and the rear of the water  
tray. This will prevent some of the abrasive particles  
from flowing through the pump.  
CAUTION -Water Strainer Placement  
Figure 13. Priming Bulb  
ALWAYS position the strainer in the water tray in a manner  
that will allow the free movement of the conveyor cart, and  
clearance from the cutting blade and cutting action.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 21  
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PRE-SETUP (GASOLINE ENGINE)  
Dry Cutting Setup (Gasoline Only)  
CAUTION - Dry Cutting  
ALWAYS use the water feed system unless special  
dry cut blades are being used. If dry cutting is required  
disconnect water pump.  
To disconnect the mechanical water pump from the drive  
V-belts for Dry Cutting, perform the following:  
Figure 15. Engine Oil Dipstick (Removal)  
1. Loosen the 2 hex head cap screws (Figure 14) that  
secure the pump mount bracket.  
3. Insert and remove the dipstick without screwing it into  
the filler neck. Check the oil level shown on the dipstick.  
2. Pull the pump handle upward to disengage the pump.  
3. Tighten the 2 hex head cap screws that secure the  
pump mount bracket.  
4. If the oil level is low  
(Figure 16), fill to the  
edge of the oil filler  
hole with the recom-  
mended oil type (Table 5
Maximum oil capacity
1.16 quarts (1.1 liters)  
Figure 14. Pump  
Disengage  
Figure 16. Engine Oil Dipstick (Oil Level)  
TABLE 5. OIL TYPE  
Season  
Summer  
Spring/Fall  
Winter  
Temperature  
25°C or Higher  
25°C~10°C  
Oil Type  
SAE 10W-30  
SAE 10W-30/20  
SAE 10W-10  
Before Starting  
1. Read safety instructions at the  
beginning of manual.  
2. Clean the saw, removing dirt and  
dust, particularly the engine  
cooling air inlet, carburetor and  
air cleaner.  
0°C or Lower  
CAUTION - Explosive Fuel  
3. Check the air filter for dirt and dust. If air filter is dirty,  
replace air filter with a new one as required.  
4. Check carburetor for external dirt and dust. Clean with  
dry compressed air.  
Motor fuels are highly flammable and  
can be dangerous if mishandled. DO  
NOT smoke while refueling. DO NOT  
attempt to refuel the pump if the engine  
is hot! or running.  
5. Check fastening nuts and bolts for tightness.  
Engine Oil Check  
Fuel Check  
1. To check the engine oil level, place the saw on a secure  
level surface with the engine stopped.  
1. Remove the gasoline cap located on top of fuel tank.  
2. Remove the filler dipstick from the engine oil filler hole  
(Figure 15) and wipe clean.  
2. Visually inspect to see if the fuel level is low. If fuel is  
low, replenish with unleaded fuel.  
3. Whenrefueling,besuretouseastrainerforfiltration.DO  
NOT top-off fuel.Wipe up any spilled fuel immediately!  
PAGE 22 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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STARTUP/SHUTDOWN (ELECTRIC MOTORS)  
Start-up (Electric Motor)  
CAUTION - Read this Manual before Starting!  
Read and fully understand this manual  
2. Avoid overloading the motor when cutting.The electric  
motors are protected with a manual-reset thermal  
overload switch that will turn the saw off if the motor is  
overheated. In the event that the switch is tripped, turn  
the ON/OFF switch to the OFF position and allow the  
motor to cool before attempting to restart.  
before starting or attempting to  
operate the saw.  
Before starting the saw's electric  
motor make sure that the Safety,  
Shutdown Procedure  
General Information, Inspection and Pre-setup  
sections have been completed and understood. DO  
NOT proceed until the above mentioned sections have  
been completed.  
1. Place the power ON/OFF switch (Figure 18) in the OFF  
position (down).  
DANGER - Amputation Hazard  
NEVER place hands and fingers  
near the cutting blade.The possibility  
exists of severe bodily harm if hands  
and fingers come in contact with  
rotating saw blade.  
Figure 18. Power ON/OFF Switch (OFF)  
CAUTION - Blade Guard Safety  
2. Wait for the cutting blade to stop rotating.  
ALWAYS ensure that the cutting blade has  
been mounted correctly and that it is raised  
above the surface you are about to cut.  
3. Disconnect the saw's AC power cord from the power  
source.  
CAUTION - Leaving the Saw Unattended  
1. Turn the power ON/OFF switch (Figure 17) to the ON  
position with the blade away from the material to be  
cut, the cutting blade should begin to rotate. Before  
cutting remember to follow all safety rules referenced  
in
NEVER leave the saw connected to a power source  
when unattended.This will prevent accidental starting  
and potential injury.  
4. Using a soft cloth, clean any excess debris or residue  
that may have accumulated on the saw.  
5. Store saw in a clean dry location where it will be out of  
the reach of children.  
Figure 17. Power ON/OFF Switch (ON)  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 23  
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STARTUP/SHUTDOWN (GASOLINE ENGINE)  
Start-up Gasoline Engine  
2. Place the Engine ON/OFF switch (Figure 20) in the ON  
position.  
CAUTION - Read this Manual before Starting!  
Read and fully understand this manual  
before starting or attempting to  
operate the saw.  
Before starting the saw's electric  
motor make sure that the Safety,  
General Information, Inspection and Pre-setup  
sections have been completed and understood. DO  
NOT proceed until the above mentioned sections have  
been completed.  
Figure 20. Engine ON/OFF Switch  
The CLOSED position of the  
choke lever enriches the fuel  
mixture for starting a COLD  
engine. The OPEN position  
provides the correct fuel mixture  
for normal operation after starting,  
and for restarting a warm engine.  
CAUTION - Dry Cutting Precautions  
NOTE  
ALWAYS use the water feed system unless special  
dry cut blades are being used. If dry cutting is required  
disconnect water pump.  
WARNING - Amputation Hazard  
3. Place the Choke Lever (Figure 21) in the CLOSED  
NEVER place hands and fingers near  
the cutting blade.The possibility exist  
of severe bodily harm if hands and  
fingers come in contact with rotating  
saw blade.  
position.  
CAUTION - Blade Guard Safety  
ALWAYS ensure that the cutting blade has  
been mounted correctly and that it is raised  
above the surface you are about to cut.  
Figure 21. Choke Lever  
4. Rotate the throttle lever (Figure 22) halfway between  
fast and slow for starting. All cutting is done at full  
throttle. The engine governor speed is factory set to  
ensure optimum blade operating speeds.  
1. Place the fuel valve lever (Figure 19) to the ON position.  
Figure 19. Engine FuelValve Lever  
Figure 22. Throttle Lever  
PAGE 24 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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STARTUP/SHUTDOWN (GASOLINE ENGINE)  
5. Grasp the starter grip (Figure 23) and slowly pull it out.  
9. Avoid overloading the engine when cutting. In the event  
that the engine becomes overloaded, turn the engine  
ON/OFF switch to the OFF position (Figure 25) and  
allow the engine to cool before attempting to restart.  
The resistance becomes the hardest at a certain posi-  
tion, corresponding to the compression point. Pull the  
starter grip briskly and smoothly for starting.  
WARNING - Burn Hazard  
Engine components can generate extreme  
heat. To prevent burns, DO NOT touch  
these areas while the engine is running or  
immediately after operations. NEVER  
operate the engine with heat shields or heat  
guards removed.  
Figure 23. Starter Grip  
Stopping the Engine  
CAUTION - Engine Starter Rope Safety  
1. Set the engine throttle lever to slow speed and let the  
DO NOT pull the starter rope all the way to the end. DO  
NOT release the starter rope after pulling. Allow it to  
rewind as soon as possible. Failure to do so could  
damage your engine.  
engine idle for 3-5 minutes.  
2. Turn the engine ON/OFF switch to the OFF position  
(Figure 25).  
3. Place the fuel valve lever in the closed position.  
6. If the engine has started, slowly return the choke lever  
(Figure 21) to the OPEN position. If the engine has not  
started repeat steps 1 through 5.  
4. Let the engine cool.  
5. Using a soft cloth, clean any excess debris or residue  
that may have accumulated on the saw.  
7. Before the saw is placed into operation, run the engine  
forseveralminutes.Checkforfuelleaks,andnoisesthat  
would associate with loose guards and/or covers.  
6. Store saw in a clean dry location where it will be out of  
the reach of children.  
8. Graduallymovethe enginethrottlelevertowardthefast  
position. (All cutting should be done at full throttle).  
WARNING - Engine Speed when Cutting  
ALWAYS cut with the saw at FULL THROTTLE.  
Attempting to cut with the saw at less than full throttle  
could cause the blade to bind or stop abruptly in the  
slab resulting in serious injury to the operator or others  
in the area.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 25  
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OPERATION  
Operation  
DANGER - Amputation Hazard  
4. Push the conveyor cart, with the material in place,  
slowly and evenly until the cut is complete. When  
finished cutting, move the cart back and remove the  
cut pieces.  
ALWAYS be alert to the fact that there is a rotating  
blade on the saw and be extremely aware of your body  
position - especially your hands in relationship to the  
rotating blade. The possibility exists of severe bodily  
harm even death if your body comes in contact with  
the rotating saw blade.  
CAUTION - Dry Cutting Guidelines  
NEVER lift the blade guard while  
the blade is rotating.The possibility  
exists of severe bodily harm if  
fingers or hands come in contact  
with the rotating saw blade. Wait for the blade to stop  
rotating before lifting the blade guard.  
The MP2 Saw has two methods availible for cutting: Using  
the step pedal to lower the blade into the material or fixing  
the height of the blade before cutting using the raise/lower  
crank handle to allow for a constant cutting depth.  
"Step Pedal" Cutting Method  
"Fixed Height" Cutting Method  
1. Place the material to be cut (Figure 25) on the conveyor  
cart against the backstop.  
1. Using the Raise/Lower Crank  
Handle, located above the step  
pedal, turn the handle CLOCKWISE  
to LOWER the saw blade to the  
required depth (Figure 24).  
2. With the blade away from the material to be cut, start  
the Motor (or Engine) using the steps listed in the  
Startup/Shutdown Procedure (Electric Motors or  
Gasoline Engine).  
Turn the handle COUNTER-  
CLOCKWISE to RAISE the  
saw blade to the required  
depth.  
3. Move the conveyor cart, with  
the matrial in place, under the  
blade. Using your foot, depress  
the step pedal using a slow  
even pressure to lower the  
blade for cutting (Figure 26).  
Figure 24. Raise/Lower Crank Handle  
2. Place the material to be cut (Figure 25) on the conveyor  
cart against the backstop.  
Figure 26. Raise/Lower Step  
Pedal  
Jamming the blade into the  
object being cut will reduce the  
NOTE  
life of the blade and could  
damage the blade or material.  
4. When finished cutting, slowly lift your foot up to raise  
the blade away from the conveyor cart and your cut  
material. Hold on to the mounting plate handle to prevent  
the plate from rising rapidly, possibly causing the saw  
to become unstable. DO NOT remove your foot from  
the step pedal until the blade has fully raised.  
Figure 25. Material Placement  
3. With the blade away from the material to be cut, start the  
Motor (or Engine) using the steps listed in the Startup/  
Shutdown Procedure (Electric Motors or Gasoline  
Engine).  
PAGE 26 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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MAINTENANCE (SAW)  
Maintenance  
10. Cutting blades must fit the arbor snugly. This is very  
important with diamond blades as pounding will occur  
and serious blade damage can result. If the arbor  
shoulder of the inner blade flange is grooved from blade  
slippage, the flange must be replaced.  
A good preventive maintenance program of regular inspection  
and care will increase life and improve the performance of  
the saw and cutting blades.  
WARNING - Shut-down the Saw for Maintenance  
11. Inspect the conveyor cart periodically. Replace the  
wood insert and wheels when necessary.  
Whenever cleaning, adjusting, or lubricating any part of  
the saw, MAKE CERTAIN to do the following:  
12. Lubricate spindle bearings after each day's operation.  
When dry cutting, grease bearings several times during  
the day's operation to protect them from the dust.  
Electric Powered Saws  
Place power ON/OFF switch to the OFF position.  
13. Replace the spindle bearings as soon as they begin to  
make any strange noises. Worn bearings can destroy  
blades very quickly.  
Disconnect power cord from AC source.  
NEVER attempt to check theV-belt with the engine  
running. Severe bodily injury can occur.  
14. Grease pivot bearings periodically.  
Gasoline Powered Saws  
Bearing Lubrication Care  
Turn the engine switch to the OFF position,  
disconnect the spark plug wire and secure it away  
from the spark plug.  
There are two (2) grease points (Figure 27) for the MP2  
(Electric Motors) and four (4) grease points for the MP2  
(Gasoline Engine). Use only Premium Lithium 12 based  
Grease, conforming to NLG1 Grade #1 consistency.Grease  
daily.  
NEVER attempt to check theV-belt with the engine  
running. Severe bodily injury can occur.  
Basic Maintenance  
1. Tighten loose nuts or screws and replace any cracked  
or broken parts.  
2. Clean the machine frequently. Remove the belt guard  
and clean the pulleys. The belts and pulleys will wear  
rapidly if excessive dust builds up.  
3. Clean the sludge that accumulates on the bottom of  
the water tray at least once a day and refill with clean  
water. It may be necessary to clean the tray out twice  
a day in heavy cutting. The sludge is abrasive and will  
shorten the life of the water pump and blades.  
4. After each day's use, clean the sludge from the bottom  
of the tray and run clean water through the water pump  
and water hoses. This extends pump and blade life.  
5.  
Lubricate the blade adjustment rod after every eight  
(8) hours of use.  
6. Check the spindle bolt for tightness periodically.  
7. Keep the drive belts tight. It is very important to replace  
worn belts as soon as possible.  
8. MAKE CERTAIN that the cutting head is aligned  
properly. Misalignment can adversely affect blade life.  
Figure 27. Zerk Fittings (Lubrication)  
9. The blade flanges must have a diameter of 4 in.  
Undersize flanges will reduce blade life and cause  
breakage. Therefore, they should be replace at once.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 27  
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MAINTENANCE (SAW)  
Adjust BeltTension (Gasoline Powered Saws)  
3
When belt tension is correct, pulleys are aligned, and  
belts are parallel, tighten jackshaft mounting bolts and  
adjuster screw jam nuts.  
1. Remove engine-to-jackshaft and jackshaft-to-bladeshaft  
belt guards.  
4. Check for proper engine-to-jackshaft belt tension (4-5  
lbs with 1/8" deflection at mid-point between pulleys.)  
2. Check for proper belt tension on jackshaft-to-bladeshaft  
belts and engine-to-jackshaft belts.  
5. Adjust engine adjuster bolts to apply proper tension while  
maintaining pulley alignment and belt parallelism. Check  
pulley alignment and parallelism with a straight edge  
from jackshaft pulley to engine pulley.  
4-5 lbs of force applied to the mid-point between jackshaft  
and bladeshaft pulleys should deflect the belt  
approximately 3/16" on a used belt.  
4-5 lbs of force applied to the mid-point between engine  
and jackshaft pulleys should deflect the belt  
approximately 1/8".  
6. When proper belt tension and parallelism have been  
achieved, tighten engine mounting bolts.  
Reinstall belt guards. Test saw operation.  
To adjust engine-to-jackshaft belts only:  
1. Loosen engine mounting bolts.  
Adjust BeltTension (Electric Powered Saws)  
2. Adjust engine adjusting nuts to apply proper tension while  
maintaining pulley alignment and belt parallelism. Check  
pulley alignment and parallelism with a straight edge  
from jackshaft pulley to engine pulley.  
1. Remove the three belt guard screws securing the belt  
guard to the frame and remove the belt guard.  
2. Loosen the four motor mounting bolts.  
3. To increase belt tension, tighten the two adjusting nuts  
on the back of the motor plate.  
It is very important that the  
jackshaft and blade arbor remain  
parallel to each other.  
NOTE  
Proper belt tension is 4-5 lbs. of force with approximately  
3/16" of belt deflection measured at a point midway  
between the pulleys.  
This can be accomplished by using  
the adjusting bolt located on the engine mounting plate to  
help keep the jackshaft from cocking.  
4. Adjust motor adjusting nuts to apply proper tension while  
maintaining pulley alignment and belt parallelism. Check  
pulley alignment and parallelism with a straight edge  
from motor pulley to bladeshaft pulley.  
3. When proper belt tension and parallelism have been  
achieved, tighten engine mounting bolts.  
5. When proper belt tension and parallelism have been  
achieved, tighten engine mounting bolts and re-attach  
the belt guard.  
To adjust jackshaft-to-bladeshaft belt:  
If the jackshaft-to-bladeshaft belt requires adjustment, it will  
also be necessary to adjust the engine-to-jackshaft belts.  
1. Loosen the 4 jackshaft mounting bolts, the 4 engine  
mounting bolts, and the jackshaft adjuster screw jam  
nuts (Loosen the mounting bolts only enough for the  
jackshaft and the engine to slide easily.)  
2. Adjust jackshaft-to-bladeshaft belt first. To increase  
tension, tighten adjuster on bladeshaft belt side.To help  
maintain belt parallelism, loosen the jackshaft adjuster  
screw on the engine side the same number of turns that  
the bladeshaft side adjuster screw was tightened. Using  
a straight edge on the bladeshaft pulley to the jackshaft  
pulley, check for pulley alignment and belt parallelism.  
PAGE 28 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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MAINTENANCE (SAW)  
Cutting Head Alignment (Blade)  
CheckingVertical Cutting Head Alignment:  
When cutting with the MP2 Saw, make certain the cutting Use the following procedures to check the vertical cutting  
head is properly aligned horizontally and vertically with the head alightment. The MP2 Saw saw is factory shimmed to  
conveyor cart. Misalignment can adversely affect blade life. ensure proper vertical alignment. Should the cutting head  
become vertically misaligned, contact your local authorized  
service center to have the cutting head realigned.  
Horizontal Cutting Head Alignment:  
1. Loosen the set screws (Motor Plate & Blade Guard Assy.,  
Item 9) for the engine mount bearings.  
CAUTION - Cutting Head Alignment  
2. Adjust the position of the cutting head horizontally until  
the blade is positioned within the middle of the cutting  
groove (Figure 28).  
It is very important that the jackshaft and blade shaft  
remain parallel to each other.Self-alignment of the cutting  
head could result in damage to your material, machine or  
bodily injury.  
3. Slide the coveyor cart forward and backward on the tray  
to ensure that no part of the blade comes into contact  
with the groove. If the blade touches the side of the cart  
at any time, the cutting head is out of alignment. Repeat  
steps 1-3 until corrected.  
1. Using a square or other straight edge device, check the  
vertical alignment of the blade by placing the bottom of  
the square on the conveyor cart and the side of the  
square against the blade (Figure 29).  
4. Tighten the set screws.  
2. If a gap exists between any part of the blade and square,  
the cutting head is out of alignment.  
Figure 28. Cutting Head Alignment (Horizontal)  
Figure 29. Cutting Head Alignment (Vertical)  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 29  
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MAINTENANCE (GASOLINE ENGINE)  
Engine Maintenance  
Perform engine maintenance procedures as referenced by  
Table 6 below:  
TABLE 6. ENGINE MAINTENANCE SCHEDULE  
FIRST  
EVERY 3  
EVERY 6  
EVERY  
YEAR OR  
100 HRS.  
EVERY  
2 YEARS OR  
200 HRS.  
DESCRIPTION (3)  
OPERATION  
BEFORE  
MONTH OR MONTHS OR MONTHS OR  
10 HRS.  
25 HRS.  
50 HRS.  
CHECK  
CHANGE  
CHECK  
X
Engine Oil  
X
X
X
Air Cleaner  
All Nuts & Bolts  
Spark Plug  
CHANGE  
X (1)  
Re-tighten If  
Necessary  
CHECK-CLEAN  
REPLACE  
CHECK  
X
X
X
Cooling Fins  
Spark Arrester  
Fuel Tank  
CLEAN  
X
X
CLEAN  
Fuel Filter  
CHECK  
X
Idle Speed  
CHECK-ADJUST  
CHECK-ADJUST  
CHECK  
X (2)  
Valve Clearance  
Fuel lines  
X (2)  
Every 2 years (replace if necessary) (2)  
(1) Service more frequently when used in DUSTY areas.  
(2) These items should be serviced by your servic dealer, unless you have the proper tools and are mechanically  
proficient. Refer to the HONDA shop Manual for service procedures  
(3) For commercial use, log hours of operation to determine proper maintenance intervals.  
Reference manufacturer engine  
manual for specific servicing  
instructions.  
PAGE 30 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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MAINTENANCE (GASOLINE ENGINE)  
Maintenance  
WARNING - Explosive Fuel  
Perform the engine maintenance procedures as indicated  
below:  
DO NOT use gasoline as a cleaning  
solvent, because that would create a risk  
of fire or explosion.  
Daily  
Thoroughly remove dirt and oil from the engine and control  
area. Clean or replace the air cleaner elements as  
necessary. Check and retighten all fasteners as  
necessary.Check the spring box and bellows for oil leaks.  
Repair or replace as needed.  
Engine Air Cleaner  
1. Remove the air cleaner cover and foam filter element as  
shown in Figure 34.  
Weekly  
Remove the fuel filter cap and clean the inside of the  
fuel tank.  
2. Tap the paper filter element (Figure 32) several times on  
a hard surface to remove dirt, or blow compressed air  
[notexceeding30psi(207kPa, 2.1kgf/cm2)]throughthe  
filter element from the air cleaner case side. NEVER  
brush off dirt. Brushing will force dirt into the fibers.  
Replace the paper filter element if it is excessively dirty.  
Remove or clean the filter at the bottom of the tank.  
Remove and clean the spark plug (Figure 30), then adjust  
the spark gap to 0.028 ~0.031 inch (0.6~0.7 mm). This  
unit has electronic ignition, which requires no  
adjustments.  
3. Clean foam element in warm, soapy water or nonflam-  
mablesolvent. Rinseanddrythoroughly.Diptheelement  
in clean engine oil and completely squeeze out the  
excess oil from the element before installing.  
Figure 30. Spark Plug Gap  
Engine Oil  
1. Drain the engine oil when the oil is warm as shown in  
Figure 31.  
2. Remove the oil drain bolt and sealing washer and allow  
the oil to drain into a suitable container.  
3. Replace engine oil with recommended type oil as listed  
in Table 5. Engine oil capacityis 1.16 quarts (1.1 liters).  
DO NOT overfill.  
4. Install drain bolt with sealing washer and tighten se-  
curely.  
Figure 32. Engine Air Cleaner  
Figure 31. Engine Oil (Draining)  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 31  
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ENGINE WIRING DIAGRAM  
Figure 37. Honda GX270 QWH2 EngineWiring Diagram  
PAGE 32 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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TROUBLESHOOTING - BLADE  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, please take a remedial action following the diagnosis based on the BladeTroubleshooting (Table 7) information  
shown below and on the following page. If the problem cannot be remedied, please leave the unit just as it is and consult  
our company's business office or service plant.  
Table 7. BladeTroubleshooting  
Symptom  
Possible Problem  
Solution  
Consult dealer or Multiquip for correct blade.Try cutting  
very soft material (sandstone, silica brick, cinder block)  
to “redress” the blade.  
Blade too hard for the material being cut?  
Engine torque diminished because of loose  
V-belt?  
Tighten and/or replace V-belt.  
Blade slows or stops cutting, still  
remains on blade  
Insufficient engine power?  
Check throttle setting. Check engine horsepower.  
Check that the blade is properly oriented and rotational  
arrow points in a “down-cutting” direction.  
Improper direction of rotation?  
Check that the blade and flange pin are properly  
installed on the blade shaft.  
Blade is slipping onto the blade shaft?  
Blade being used on misaligned saw?  
Check blade shaft bearings and alignment integrity.  
Blade is excessively hard for the material  
being cut?  
Check specification of the blade with the material being  
cut. Consult dealer or Multiquip for information.  
Blade does not cut straight and/  
or true.  
Blade improperly mounted on arbor  
shoulders and flanges?  
Ensure blade is properly affixed on the blade shaft.  
Excessive force applied to blade while  
cutting?  
DO NOT force the blade in the cut. Apply a slow and  
steady pace when sawing.  
Consult dealer or Multiquip for correct blade.Try cutting  
very soft material (sandstone, silica brick, cinder block)  
to “redress” the blade.  
Blade is too hard for material being cut?  
Blade improperly mounted on arbor  
shoulders and flanges?  
Ensure blade is properly affixed on the blade shaft.  
Ensure proper flow and volume of water is provided  
for wet cutting blades. Ensure sufficient cooling air is  
circulated about a dry cutting blade.  
Blade not receiving enough cooling water or  
air?  
Blade discoloring, crackling and/or  
wearing excessively.  
Arbor hole out of round?  
Ensure blade is properly affixed on the blade shaft.  
Incorrect blade chosen for material being  
cut?  
Check specification of the blade with the material being  
cut. Consult dealer or Multiquip for information.  
Excessive force applied to blade while  
cutting?  
DO NOT force the blade in the cut. Apply a slow and  
steady pace when sawing.  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 33  
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TROUBLESHOOTING (GASOLINE ENGINE)  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, please take a remedial action following the diagnosis based on the EngineTroubleshooting (Table 8) information  
shown below and on the following page. If the problem cannot be remedied, please leave the unit just as it is and consult  
our company's business office or service plant.  
TABLE 8. ENGINE TROUBLESHOOTING  
SYMPTOM  
Difficult to start  
POSSIBLE PROBLEM  
SOLUTION  
Ignition plug being bridged (shorted)?  
Carbon deposit at ignition?  
Check ignition system.  
Clean or replace ignition.  
Replace insulators.  
Fuel is available but spark plug  
will not ignite. (Power available  
at high tension cable).  
Short circuit due to defective insulators?  
Improper spark gap?  
Short circuit at stop switch?  
Ignition coil defective?  
Defective cylinder head gasket?  
Cylinder worn?  
Set spark plug gap to the correct gap.  
Check stop switch circuit. Replace stop switch if defective.  
Replace ignition coil.  
Fuel is available but spark plug  
will not ignite. (Power NOT  
available at high tension cable).  
Tighten cylinder head bolts or replace head gasket.  
Replace cylinder.  
Fuel is available and spark plug  
ignites (compressionlow ).  
Spark plug loose?  
Tighen spark plug.  
Operation not satisfactory  
Air cleaner clogged?  
Clean or replace air cleaner.  
Adjust carbureator float  
Fuel level in carbureator float chamber  
improper?  
Not enough power available  
(compression normal, no miss-  
firing).  
Muffler clogged with carbon deposits?  
Fuel in use inadequate (water, dust)?  
Ignition coil defective?  
Clean or replace muffler.  
Flush fuel sytem and replace with fresh fuel.  
Flush fuel sytem and replace with fresh fuel.  
Bleed (remove air) from fuel line.  
Clean or replace cylinder  
Air in fuel line?  
Not enough power available  
(compression normal, miss-  
firing).  
Carbon deposits in cylinder?  
Ignition plug often shorts?  
Replace ignition wires, clean ignition.  
Flush fuel sytem and replace with fresh fuel.  
Clean or replace crankcase.  
Fuel in use inadequate (water, dust)?  
Excessive carbon depostion in  
combustion chamber?  
Engine overheats.  
Exhaust or muffler clogged with carbon.  
Spark plug heat value incorrect?  
Clean or replace muffler.  
Replace spark plug with correct type spark plug.  
PAGE 34 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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TROUBLESHOOTING (GASOLINE ENGINE)  
TABLE 8. ENGINE TROUBLESHOOTING (CONTINUED)  
SYMPTOM  
POSSIBLE PROBLEM  
SOLUTION  
Operation not satisfactory  
Governor adjustment improper?  
Governor spring defective?  
Fuel flow erratic?  
Adjust governor to correct lever.  
Rotational speed fluctuates.  
Clean or replace ignition.  
Check fuel line.  
Dust in rotating part?  
Clean recoil starter assembly.  
Replace spiral spring.  
Recoil starter not working  
properly.  
Spiral spring failure?  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 35  
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TROUBLESHOOTING (ELECTRIC MOTOR)  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, please take a remedial action following the diagnosis based on the Electric Motor Troubleshooting (Table 9)  
information shown below and on the following page. If the problem cannot be remedied, please leave the unit just as it is  
and consult our company's business office or service plant.  
TABLE 9. TROUBLESHOOTING (ELECTRIC MOTOR)  
SYMPTON  
POSSIBLE PROBLEM  
SOLUTION  
Check that saw is properly connected  
to a power source.  
Power cord plugged in?  
Defective power cord?  
Replace power cord.  
Saw does not run when  
power is switch on.  
Main power switch on saw defective?  
Check and replace switch if necessary.  
Have electrical system checked by a  
qualified licensed electrician.  
Loose electrical connections?  
Defective motor?  
Check motor and replace if necessary.  
Use a power cord/extension cable of  
rated length. See Table 4.  
Power cord/extension cable too long?  
Poor saw performance little  
power.  
Check electrical circuit. Circuit must be  
cable of supplying 20 amps minimum.  
Power source is insufficient?  
Does motor run at rated speed?  
Check motor and replace if necessary.  
Exert less pressure when cutting.  
Too much force exerted on the blade  
while cutting?  
Use a saw blade which corresponds to  
the material being cut.  
Motor stops (power cuts out)  
Incorrect saw blade?  
Have electrical system checked by a  
qualified licensed electrician.  
Defective electrical system?  
PAGE 36 — MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09)  
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NOTES  
MQ MP2 SERIES SAW — OPERATION MANUAL — REV. #0 (01/26/09) — PAGE 37  
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OPERATION MANUAL  
HERE’S HOW TO GET HELP  
PLEASE HAVE THE MODEL AND SERIAL  
NUMBER ON-HAND WHEN CALLING  
UNITED STATES  
Multiquip Corporate Office  
MQ Parts Department  
18910 Wilmington Ave.  
Carson, CA 90746  
Contact: [email protected]  
Tel. (800) 421-1244  
Fax (800) 537-3927  
800-427-1244  
310-537-3700  
Fax: 800-672-7877  
Fax: 310-637-3284  
Mayco Parts  
Warranty Department  
800-306-2926  
310-537-3700  
Fax: 800-672-7877  
Fax: 310-637-3284  
800-421-1244, Ext. 279  
310-537-3700, Ext. 279  
Fax: 310-537-1173  
Fax: 310-631-5032  
Service Department  
Technical Assistance  
800-421-1244  
310-537-3700  
Fax: 310-537-4259  
800-478-1244  
MEXICO  
UNITED KINGDOM  
MQ Cipsa  
Multiquip (UK) Limited Head Office  
Carr. Fed. Mexico-Puebla KM 126.5  
Momoxpan, Cholula, Puebla 72760 Mexico  
Contact: [email protected]  
Tel: (52) 222-225-9900  
Fax: (52) 222-285-0420  
Hanover Mill, Fitzroy Street,  
Ashton-under-Lyne,  
Lancashire OL7 0TL  
Tel: 0161 339 2223  
Fax: 0161 339 3226  
Contact: [email protected]  
CANADA  
Multiquip  
4110 Industriel Boul.  
Laval, Quebec, Canada H7L 6V3  
Contact: [email protected]  
Tel: (450) 625-2244  
Fax: (450) 625-8664  
© COPYRIGHT 2009, MULTIQUIP INC.  
Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property  
of their respective owners and used with permission.  
This manual MUST accompany the equipment at all times.This manual is considered a permanent part of the equipment and should remain with the unit if resold.  
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in  
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published  
in this publication at any time without notice and without incurring any obligations.  
Your Local Dealer is:  
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