MTD Snow Blower 31AH7S3G701 User Manual

Operator’s Manual  
SNOW THROWER  
MODEL 31AH7S3G701  
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY  
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-  
covered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting  
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.  
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have  
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized  
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.  
MTD LLC P.O. BOX 361131 CLEVELAND, OHIO 44136-0019  
PRINTED IN U.S.A.  
770-10021G.f
(5/05)  
FORM NO.  
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SECTION 1: IMPORTANT SAFE OPERATION PRACTICES  
WARNING: This symbol points out important safety instructions which, if not followed, could endanger  
the personal safety and/or property of yourself and others. Read and follow all instructions in this manual  
before attempting to operate this machine. Failure to comply with these instructions may result in  
personal injury. When you see this symbol—heed its warning.  
WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain  
or emit chemicals known to the State of California to cause cancer, birth defects or other  
reproductive harm.  
DANGER: This machine was built to be operated according to the rules for safe operation in this  
manual. As with any type of power equipment, carelessness or error on the part of the operator can  
result in serious injury. This machine is capable of amputating hands and feet and throwing objects.  
Failure to observe the following safety instructions could result in serious injury or death.  
7. Never attempt to make any adjustments while engine is  
TRAINING  
running, except where specifically recommended in the  
1. Read, understand, and follow all instructions on the  
operator’s manual.  
machine and in the manual(s) before attempting to  
8. Let engine and machine adjust to outdoor temperature  
assemble and operate. Keep this manual in a safe place  
before starting to clear snow.  
for future and regular reference and for ordering  
replacement parts.  
9. To avoid personal injury or property damage use extreme  
care in handling gasoline. Gasoline is extremely  
2. Be familiar with all controls and their proper operation.  
flammable and the vapors are explosive. Serious  
Know how to stop the machine and disengage them  
personal injury can occur when gasoline is spilled on  
quickly.  
yourself or your clothes, which can ignite. Wash your skin  
3. Never allow children under 14 years old to operate this  
and change clothes immediately.  
machine. Children 14 years old and over should read and  
a. Use only an approved gasoline container.  
understand the operation instructions and safety rules in  
b. Extinguish all cigarettes, cigars, pipes and other  
this manual and should be trained and supervised by a  
sources of ignition.  
parent.  
c. Never fuel machine indoors.  
4. Never allow adults to operate this machine without  
d. Never remove gas cap or add fuel while the  
proper instruction.  
engine is hot or running.  
5. Thrown objects can cause serious personal injury. Plan  
e. Allow engine to cool at least two minutes before  
your snow-throwing pattern to avoid discharge of material  
refueling.  
toward roads, bystanders and the like.  
f. Never over fill fuel tank. Fill tank to no more than  
6. Keep bystanders, helpers, pets and children at least 75  
½ inch below bottom of filler neck to provide space  
feet from the machine while it is in operation. Stop  
for fuel expansion.  
machine if anyone enters the area.  
g. Replace gasoline cap and tighten securely.  
7. Exercise caution to avoid slipping or falling, especially  
h. If gasoline is spilled, wipe it off the engine and  
when operating in reverse.  
equipment. Move machine to another area. Wait 5  
minutes before starting the engine.  
i. Never store the machine or fuel container inside  
PREPARATION  
where there is an open flame, spark or pilot light  
1. Thoroughly inspect the area where the equipment is to  
(e.g. furnace, water heater, space heater, clothes  
be used. Remove all doormats, newspapers, sleds,  
dryer etc.).  
boards, wires and other foreign objects, which could be  
j. Allow machine to cool at least 5 minutes before  
tripped over or thrown by the auger/impeller.  
storing.  
2. Always wear safety glasses or eye shields during  
operation and while performing an adjustment or repair to  
OPERATION  
protect your eyes. Thrown objects which ricochet can  
cause serious injury to the eyes.  
1. Do not put hands or feet near rotating parts, in the auger/  
3. Do not operate without wearing adequate winter outer  
impeller housing or chute assembly. Contact with the  
garments. Do not wear jewelry, long scarves or other  
rotating parts can amputate hands and feet.  
loose clothing, which could become entangled in moving  
2. The auger/impeller control is a safety device. Never  
parts. Wear footwear which will improve footing on  
bypass its operation. Doing so makes the machine  
slippery surfaces.  
4. Use a grounded three-wire extension cord and  
unsafe and may cause personal injury.  
3. The controls must operate easily in both directions and  
receptacle for all units with electric start engines.  
automatically return to the disengaged position when  
5. Adjust collector housing height to clear gravel or crushed  
released.  
rock surfaces.  
4. Never operate with a missing or damaged chute  
6. Disengage all clutch levers before starting the engine.  
assembly. Keep all safety devices in place and working.  
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5. Never run an engine indoors or in a poorly ventilated  
area. Engine exhaust contains carbon monoxide, an  
odorless and deadly gas.  
6. Do not operate machine while under the influence of  
alcohol or drugs.  
MAINTENANCE AND STORAGE  
1. Never tamper with safety devices. Check their proper  
operation regularly. Refer to the maintenance and  
adjustment sections of this manual.  
2. Before cleaning, repairing, or inspecting machine  
disengage all controls and stop engine. Wait until the  
auger/impeller come to a complete stop. Disconnect the  
spark plug wire and ground against the engine to prevent  
unintended starting.  
3. Check bolts and screws for proper tightness at frequent  
intervals to keep the machine in safe working condition.  
Also, visually inspect machine for any damage.  
4. Do not change the engine governor setting or over-speed  
the engine. The governor controls the maximum safe  
operating speed of the engine.  
7. Muffler and engine become hot and can cause a burn. Do  
not touch.  
8. Exercise extreme caution when operating on or crossing  
gravel surfaces. Stay alert for hidden hazards or traffic.  
9. Exercise caution when changing direction and while  
operating on slopes.  
10. Plan your snow-throwing pattern to avoid discharge  
towards windows, walls, cars etc. Thus, avoiding possible  
property damage or personal injury caused by a ricochet.  
11. Never direct discharge at children, bystanders and pets  
or allow anyone in front of the machine.  
5. Snow thrower shave plates and skid shoes are subject to  
wear and damage. For your safety protection, frequently  
check all components and replace with original  
equipment manufacturer’s (OEM) parts only. “Use of  
parts which do not meet the original equipment  
specifications may lead to improper performance and  
compromise safety!”  
6. Check clutch controls periodically to verify they engage  
and disengage properly and adjust, if necessary. Refer to  
the adjustment section in this operator’s manual for  
instructions.  
7. Maintain or replace safety and instruction labels, as  
necessary.  
8. Observe proper disposal laws and regulations for gas, oil,  
etc. to protect the environment.  
9. Prior to storing, run machine a few minutes to clear snow  
from machine and prevent freeze up of auger/impeller.  
10. Never store the machine or fuel container inside where  
there is an open flame, spark or pilot light such as a water  
heater, furnace, clothes dryer etc.  
12. Do not overload machine capacity by attempting to clear  
snow at too fast of a rate.  
13. Never operate this machine without good visibility or light.  
Always be sure of your footing and keep a firm hold on  
the handles. Walk, never run.  
14. Disengage power to the auger/impeller when  
transporting or not in use.  
15. Never operate machine at high transport speeds on  
slippery surfaces. Look down and behind and use care  
when in reverse.  
16. If the machine should start to vibrate abnormally, stop the  
engine, disconnect the spark plug wire and ground it  
against the engine. Inspect thoroughly for damage.  
Repair any damage before starting and operating.  
17. Disengage all controls and stop engine before you leave  
the operating position (behind the handles). Wait until the  
auger/impeller comes to a complete stop before  
unclogging the chute assembly, making any adjustments,  
or inspections.  
18. Never put your hand in the discharge or collector  
openings. Always use the clean-out tool provided to  
unclog the discharge opening. Do not unclog chute  
assembly while engine is running.Shut off engine and  
remain behind handles until all moving parts have  
stopped before unclogging.  
11. Always refer to the operator’s manual for proper  
instructions on off-season storage.  
WARNING: Restrict the use of this power  
machine to persons who read, understand  
and follow the warnings and instructions  
in this manual and on the machine.  
19. Use only attachments and accessories approved by the  
manufacturer (e.g. wheel weights, tire chains, cabs etc.).  
20. If situations occur which are not covered in this manual,  
use care and good judgment. Contact your dealer or  
telephone 1-800-800-7310 for assistance and the name  
of your nearest servicing dealer.  
4
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SECTION 2: ASSEMBLING YOUR SNOW THROWER  
NOTE: References to right or left side of the snow  
thrower are determined from behind the unit in the  
operating position. The “operator’s position” is defined  
as standing directly behind the snow thrower, facing the  
handle panel.  
Raise the upper handle assembly until it locks over  
the lower handle.  
Look at the lower rear of snow thrower frame to be  
sure both cables are aligned with cable roller  
guides.  
Secure the upper handle and lower handle with the  
two plastic wing knobs, cupped washers and  
carriage bolts previously removed and tighten the  
upper two plastic wing knobs. See Figure 3.  
Unpacking  
Remove screws from the top sides and ends of the  
shipping crate.  
Set panel aside to avoid tire punctures or personal  
injury.  
Upper  
Chute  
Rod  
Remove and discard plastic bag that covers unit.  
Remove any loose parts included with unit (i.e.,  
Operator’s Manual, etc.).  
Carriage  
Bolt  
Bracket  
Roll unit out of crate.  
Cupped  
Washer  
Loose Parts  
The augers are secured to the auger shaft with two  
shear pins and cotter pins. If you hit a foreign object or  
ice jam, the snow thrower is designed so that the pins  
may shear. Two replacement shear pins and cotter pins  
are provided for your convenience. Store in a safe  
place until needed. See Figure 1.  
Upper  
Chute  
Rod  
Wing  
Nut  
Shear Pins  
Shift Rod  
Connector  
Cotter  
Pins  
Hairpin Clip  
Carriage Bolt  
Figure 1  
Lower Chute Rod  
Assembly  
Figure 3  
WARNING: Disconnect the spark plug  
wire and ground it against the engine to  
prevent unintended starting.  
Slide the shift rod connector down over the end of  
the lower shift rod. Tap the connector until it locks  
on the lower shift rod. See Figure 3.  
Remove the lower two plastic wing knobs, cupped  
washers and carriage bolts from each side of the  
lower handle. See Figure 2.  
NOTE: If the connector is not properly assembled, the  
shift rod will pivot and you will not be able to change  
speeds or change directions.  
Lower  
Handle  
Handle  
Panel  
Attaching Chute Directional Control  
Remove the hairpin clip from the upper chute rod  
and slide the upper chute rod through the upper  
chute rod bracket and into the lower chute rod. A  
pair of pliers may help in this job.  
Align the two holes on both chute rods and insert  
the hairpin clip removed earlier, through these  
holes. See Figure 3.  
Upper Handle  
Wing Knobs,  
Washers, & Bolts  
Figure 2  
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If not already attached, slip the cables that run from  
the handle panel to the chute into the cable guide  
located on top of the engine. See Figure 4.  
Unwrap the headlight wire, which is attached to the  
headlight beneath the handle panel.  
Wind the headlight wire around the right handle  
until excess slack is removed.  
Plug the wire from the headlight into the wire lead  
coming from the right side of the engine, beneath  
the fuel tank.  
Cable Guide  
Figure 4  
SECTION 3: KNOW YOUR SNOW THROWER  
Drive Control /  
Shift Lever  
Clean-out  
Tool  
Auger Control Lock  
Chute Tilt  
Control  
Heated Handles  
Switch  
Auger Control  
Headlight  
Chute  
Assembly  
Track Steering  
Control  
Electric  
Starter  
Button  
Primer  
Chute Directional  
Control  
Switch  
Box  
Choke  
Safety  
Ignition Key  
Recoil  
Starter  
Handle  
Skid Shoe  
Auger  
Throttle  
Control  
Figure 5  
WARNING: Read, understand, and follow  
all instructions and warnings on the  
machine and in this manual before  
operating.  
IMPORTANT: Always release drive control before  
changing speeds.  
Auger Control  
The auger control is located on the left handle.  
Squeeze the auger control to engage the augers.  
Release to stop the snow throwing action. (Drive  
control must also be released.) See Figure 5.  
Drive Control / Auger Control Lock  
The drive control is located on the right handle.  
Squeeze the drive control to engage the wheel drive.  
Release to stop. See Figure 5.  
IMPORTANT: Refer to Auger Control Test on page 9 prior to  
operating your snow thrower. Read and follow all  
instructions carefully and perform all adjustments to  
verify your snow thrower is operating safely and  
properly.  
The drive control also locks the auger control so you  
can turn the chute directional control without  
interrupting the snow throwing process. If the auger  
control is engaged along with the drive control, the  
operator can release the auger control (on the left  
handle) and the augers will remain engaged. Release  
both controls to stop the augers and track drive.  
6
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NOTE: It is easier to maneuver a non-running snow  
thrower with both track steering controls held in  
simultaneously.  
Chute Tilt Control  
The distance snow is thrown can be changed by  
adjusting the angle of the upper chute. Move the chute  
tilt control forward to decrease the distance, and  
backwards to increase distance. See Figure 5.  
Throttle Control  
The throttle control is located on the engine. It regulates  
the speed of the engine and will shut off the engine  
when pushed down completely. See Figure 5.  
Skid Shoe  
The space between the shave plate and the ground can  
be adjusted by positioning the skid shoes. Refer to Skid  
Shoe Adjustment on page 11.  
Safety Ignition Key  
The safety ignition key must be fully inserted and  
snapped in place before the unit will start. Remove the  
ignition key to prevent unauthorized use of equipment.  
Shift Lever  
The shift lever is located in the center of the handle  
panel and is used to determine both ground speed and  
direction of travel. It can be moved into any of eight  
positions. See Figure 5.  
IMPORTANT: Do NOT attempt to turn the key.  
Headlight  
Forward  
The headlight is on whenever the engine is running.  
Your snow thrower has six forward (F) speeds, with  
position number one (1) being the slowest speed.  
Track Lock Lever  
Reverse  
Your snow thrower has two reverse (R) speeds, with  
position number one (1) being the slowest speed.  
The track lock lever is located on the right side of the  
snow thrower and is used to select the position of the  
auger housing and the method of track operation. Move  
the lever to the right, then forward or backward to one of  
the three positions. See Figure 6.  
IMPORTANT: Always release drive control before  
changing speeds.  
Transport: Raises the front end of the snow thrower for  
easy transport. Using proper caution, this position may  
also be used on many gravel driveways to clear snow  
while leaving gravel undisturbed.  
Chute Directional Control  
The chute directional control is located on left side of  
the snow thrower. See Figure 5.  
To change the direction in which snow is thrown, turn  
chute directional control as follows:  
Normal Snow: Allows the tracks to be suspended  
independently for continuous ground contact.  
Crank clockwise to discharge to the left.  
Crank counterclockwise to discharge to the right.  
Packed Snow: Locks the front end of the snow thrower  
down to the ground for hard-packed or icy snow  
conditions.  
Heated Handles Switch  
Track Lock  
Lever  
This switch is located on the right side of the snow  
thrower dash panel. To activate the heated handles,  
toggle the switch to the right to generate heat within the  
handle grips. Toggle the switch to the left to the OFF  
position after using the snow thrower. See Figure 5.  
Packed  
Snow  
NOTE: The heated handles grips are a compliment to,  
not a substitute for, proper cold weather outerwear for  
the operator’s hands. It is recommended that the snow  
thrower operator wear gloves/mittens to avoid  
extremities of winter while operating this equipment.  
Normal  
Snow  
Track Steering Controls  
Transport  
The left and right track steering controls are located on  
the underside of the handles and they are used to  
assist in steering the snow thrower. Squeeze the right  
track control when turning right, squeeze the left control  
when turning left. Operate your snow thrower in open  
areas until you become familiar with these controls.  
Figure 6  
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SECTION 4: OPERATING YOUR SNOW THROWER  
If your home electrical system is grounded, but a  
Before Starting  
three-hole receptacle is not available, one should  
be installed by a licensed electrician before using  
the electric starter.  
If you have a grounded three-prong receptacle,  
proceed as follows:  
Move engine speed control to “Fast” position and  
set Choke Control to “Full” position.  
Push Primer three (3) times, making sure to cover  
vent hole when pushing.  
Connect power cord to switch box on engine. Plug  
the other end of power cord into a three-hole,  
grounded 120 volt AC receptacle.  
Push starter button on top of the engine to crank  
engine. As you crank the engine, move choke knob  
to FULL choke position.  
When engine starts, release starter button, and  
move choke gradually to OFF. If engine falters,  
move choke immediately to FULL and then  
gradually to OFF.  
When disconnecting the power cord, always unplug  
from the three-prong receptacle first and then from  
the snow thrower.  
WARNING: Read, understand, and follow  
all instructions and warnings on the  
machine and in this manual before  
operating.  
Gas And Oil Fill-up  
Service the engine with gasoline and oil as  
instructed in the separate engine manual packed with  
your snow thrower. Read instructions carefully.  
WARNING: Use extreme care when  
handling gasoline. Gasoline is extremely  
flammable and the vapors are explosive.  
Never fuel machine indoors or while the  
engine is hot or running. Extinguish  
cigarettes, cigars, pipes an other sources  
of ignition.  
A plastic cup may be provided inside the fuel fill  
opening to protect the tank during manufacturing.  
Remove and discard. Use the threaded fuel tank  
cap to close after fill-up.  
Recoil Starter  
Rotate choke knob to FULL choke position (cold  
engine start). If engine is warm, place choke in OFF  
position instead of FULL.  
Push primer button two or three times. If engine is  
warm, push primer button once only.  
To Start Engine  
Attach spark plug wire to spark plug. Make certain  
the metal loop on end of the spark plug wire (inside  
the boot) is fastened securely over the metal tip on  
the spark plug.  
NOTE: Always cover vent hole in primer button when  
pushing. Additional priming may be necessary for first  
start if temperature is below 15°F.  
Make certain the auger and drive controls are in the  
disengaged (up) position.  
Move throttle control up to FAST position. Insert  
ignition key into slot and snap in place. See Figure  
5. Do not turn key.  
Grasp starter handle and pull rope out slowly, until  
it pulls slightly harder. Let rope rewind slowly.  
Pull starter handle rapidly. Do not allow handle to  
snap back. Allow it to rewind slowly while keeping a  
firm hold on the starter handle.  
NOTE: Engine will not start unless ignition key is  
inserted into ignition slot in carburetor cover.  
Electric Starter  
Repeat the previous steps until engine starts.  
Determine that your house wiring is a three-wire  
grounded system. Ask a licensed electrician if you  
are not certain.  
If your house wiring system is not a three-wire  
grounded system, do not use this electric starter  
under any conditions.  
To Stop Engine  
Run engine for a few minutes before stopping to  
help dry off any moisture on the engine.  
To help prevent possible freeze-up of starter,  
proceed as follows:  
WARNING: The electric starter is  
equipped with a grounded three-wire  
power cord and plug and is designed to  
operate on 120 volt AC household  
current. It must be used with a properly  
grounded three-prong receptacle at all  
times to avoid the possibility of electric  
shock. Follow all instructions carefully  
prior to operating the electric starter.  
Electric Starter:  
Connect power cord to switch box on engine, then  
to 120 volt AC receptacle. With the engine running,  
push starter button and spin the starter for several  
seconds. The unusual sound made by spinning the  
starter will not harm engine or starter. Disconnect  
the power cord from receptacle first, and then from  
switch box.  
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IMPORTANT: If the auger shows ANY signs of rotating,  
immediately return to the operator’s position and shut  
off the engine. Wait for ALL moving parts to stop before  
re-adjusting the auger control.  
Recoil Starter  
With engine running, pull starter rope with a rapid,  
continuous full arm stroke three or four times.  
Pulling the starter rope will produce a loud clattering  
sound, which is not harmful to the engine or starter.  
To stop engine, move throttle control to “stop” or  
“off” position.  
To readjust the control cable, loosen the hex jam  
nut on the auger control cable “Z” fitting.  
Rotate the coupling end of the cable  
counterclockwise to provide more slack.  
Retighten the hex jam nut. See Figure 7.  
Repeat Auger Control Test to verify proper  
adjustment has been achieved. Repeat the  
previous steps to provide more slack in cable, if  
necessary.  
Remove ignition key (DO NOT turn key) to prevent  
unauthorized use of equipment.  
NOTE: Do not lose ignition key. Keep it in a safe place.  
Engine will not start without ignition key.  
Wipe all snow and moisture from the carburetor  
cover in the area of the control levers. Also, move  
control levers back and forth several times.  
Auger  
Control  
To Engage Track Drive  
With the engine running near top speed, move the  
shift lever into one of the six FORWARD positions  
or two REVERSE positions. Select a speed  
appropriate for the snow conditions that exist.  
Squeeze the auger control and the augers will turn.  
Release it and the augers will stop.  
Squeeze the drive control and the snow thrower will  
move. Release it and drive motion will stop.  
NEVER move shift lever without releasing drive  
control.  
Z-End  
Jam Nut  
Auger  
Control Cable  
Figure 7  
To Engage Augers  
To engage the augers and start throwing snow,  
squeeze the auger control against the left handle.  
Release to stop the augers.  
Clean-Out Tool  
The clean-out tool is conveniently fastened to the rear  
of the auger housing with a mounting clip. Should snow  
and ice lodge itself in the chute assembly during  
operation, proceed as follows to safely clean the chute  
and chute opening:  
Auger Control Test  
IMPORTANT: Perform the following test before  
operating your snow thrower for the first time and at the  
start of each winter season.  
Release both the Auger Control and the Drive/  
Auger Control Lock.  
Stop the engine by moving the throttle to the stop  
position.  
Remove the clean-out tool from the mounting clip.  
Use the shovel-shaped end of the clean-out tool to  
dislodge and scoop any snow and ice which has  
formed in and near the chute assembly.  
Check the adjustment of the auger control as follows:  
When the auger control is released and in the  
disengaged “up” position, the cable should have  
very little slack. It should NOT be tight.  
In a well-ventilated area, start the snow thrower  
engine as instructed earlier in this section under the  
heading Starting Engine. Make sure the throttle is  
set in the FAST position.  
WARNING: Never use your hands to clean  
snow and ice from the chute or auger  
housing. Use the clean-out tool or a stick to  
unclog.  
While standing in the operator’s position (behind  
the snow thrower), engage the auger.  
Allow the auger to remain engaged for  
approximately ten (10) seconds before releasing  
the auger control. Repeat this several times.  
With the engine running in the FAST position and  
the auger control in the disengaged “up” position,  
walk to the front of the machine.  
Refasten the clean-out tool to the mounting clip on  
the rear of the auger housing, and restart the  
engine.  
While standing in the operator’s position (behind  
the snow thrower), engage the auger control for a  
few seconds to clear any remaining snow and ice  
from the chute assembly.  
Confirm that the auger has completely stopped  
rotating and shows NO signs of motion.  
9
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WARNING: The temperature of the muffler  
and the surrounding areas may exceed  
Drift Cutters (If Equipped)  
Drift cutters should be used when operating the snow  
thrower in heavy drift conditions.  
°
150 F. Avoid these areas.  
For the most efficient snow removal, remove snow  
immediately after it falls.  
Discharge the snow downwind whenever possible.  
Slightly overlap each previous path.  
Set the skid shoes 1/4" below the shave plate for  
normal usage. The skid shoes may be adjusted  
upward (to lower the shave plate) for hard-packed  
snow. Adjust downward (to raise the shave plate)  
when using on gravel or crushed rock.  
Be certain to follow the precautions found in the To  
Stop Engine section to prevent possible freeze-up.  
Clean the snow thrower thoroughly after each use.  
If your unit is not equipped with drift cutters, contact  
Customer Support as instructed on page 2 for  
information regarding price and availability.  
Snow Thrower Model  
Drift Cutter Kit  
All models  
OEM-390-679  
Operating Tips  
NOTE: Allow the engine to warm up for a few minutes.  
The engine will not develop full power until it reaches  
operating temperature.  
SECTION 5: ADJUSTING YOUR SNOW THROWER  
WARNING: NEVER attempt to make any  
adjustments while the engine is running,  
except where specified in the operator’s  
manual.  
If you are uncertain that you have reached the correct  
adjustment, proceed as follows:  
WARNING: Drain the gasoline out of the  
snow thrower’s tank, or place a piece of  
plastic film under the gas cap to avoid  
spillage BEFORE making the adjustment.  
Auger Control  
Refer to Auger Control Test in the Operating Section to  
adjust the auger control.  
Tip the snow thrower forward, allowing it to rest on  
the auger housing. See Figure 8.  
Frame Cover  
Drive Control and Shift Lever  
To check the adjustment of the drive control and shift  
lever, proceed as follows:  
To check the adjustment of the traction control  
clutch and shift lever, proceed as follows:  
With the engine off, move the shift lever all the way  
forward to the highest speed. With the drive control  
released, push the snow thrower forward. The unit  
should roll forward. Then engage the drive control.  
The wheels should stop turning.  
Now release the drive control and push the unit  
again.  
Move the shift lever back to the fast reverse  
position then all the way forward again. There  
should be no resistance in the shift lever, and the  
wheels should keep turning.  
Auger  
Housing  
If you have resistance when moving the shift lever  
or the wheels stop when they should not, loosen  
the jam nut on the drive control cable and unthread  
the cable one turn.  
Figure 8  
If the wheels do not stop when you engage the  
drive control, loosen the jam nut on the drive control  
cable and thread the cable in one turn.  
Recheck the adjustment and repeat as necessary.  
Tighten the jam nut to secure the cable when  
correct adjustment is reached.  
Remove the frame cover underneath the snow  
thrower by removing the six self-tapping screws.  
With the drive control released, there must be  
clearance between the friction wheel and the drive  
plate in all positions of the shift lever.  
10  
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With the drive control engaged, the friction wheel  
must contact the drive plate. See Figure 9.  
Reconnect the upper shift rod to the lower shift rod  
by reinserting the hairpin clip removed earlier and  
sliding the shift rod connector back down into place.  
If adjustment is necessary:  
Loosen the jam nut on the drive cable. Adjust the  
cable as necessary. Refer to Figure 7.  
Retighten the jam nut to secure the cable when  
correct adjustment is reached.  
IMPORTANT: Make certain to check for correct  
adjustment of the shift rod as instructed under Final  
Adjustments in the Assembly Section, before operating  
the snow thrower  
Reassemble the frame cover.  
Skid Shoes  
Drive  
Cable  
The space between the shave plate and the ground can  
be adjusted. See Figure 11.  
Gear Shaft  
For close snow removal on a smooth surface, raise  
skid shoes higher on the auger housing.  
Use a middle or lower position when the area to be  
cleared is uneven.  
Pivot Rod  
Friction Wheel  
Rubber  
Drive  
Plate  
Figure 9  
NOTE: If you placed plastic film under the gas cap, be  
certain to remove it before operating the snow thrower.  
Shift Rod Adjustment  
To adjust the shift rod, proceed as follows:  
Remove the hairpin clip and slide the shift rod  
connector up, to separate the upper shift rod from  
the lower shift rod. See Figure 10.  
Figure 11  
Place the shift lever into the sixth (6) position.  
Rotate the shift arm clockwise (from the operator’s  
position) as far as it will go.  
Thread the upper shift rod downward until the  
elbow on its lower end aligns with the hole found in  
the lower shift rod.  
WARNING: Do not operate this snow  
thrower on gravel as loose gravel can be  
easily picked up and thrown by the auger  
causing injury to the operator and/or  
damage to the snow thrower.  
Adjust skid shoes by loosening the four flange lock  
nuts and carriage bolts. Move skid shoes to desired  
position.  
Make certain the entire bottom surface of skid shoe  
is against the ground to avoid uneven wear on the  
skid shoes. Retighten nuts and bolts securely.  
Shift Lever  
Hairpin Clip  
Carburetor  
Flat  
Washer  
Minor carburetor adjustment may be required to  
Ferrule  
compensate for differences in fuel, temperature,  
altitude and load.  
Upper Shift Rod  
Shift Rod  
Refer to the separate engine manual, packed with  
your unit, for carburetor adjustment information.  
Connector  
Hairpin Clip  
Shift Arm  
Lower Shift Rod  
Figure 10  
11  
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SECTION 6: MAINTAINING YOUR SNOW THROWER  
WARNING: Before lubricating, repairing,  
or inspecting, disengage all controls and  
stop engine. Wait until all moving parts  
have come to a complete stop. Disconnect  
spark plug wire and ground it against the  
engine to prevent unintended starting.  
Always wear safety glasses during  
operation or while performing any  
adjustments or repairs.  
Auger Shaft  
At least once a season, remove the shear pins on the  
auger shaft. Spray lubricant inside the shaft and  
lubricate the plastic auger bearings at least once a  
season. See Figure 12.  
Vent Plug  
Shear Pin  
Lubrication  
Engine  
Refer to the separate engine manual packed with your  
unit for all engine lubrication instructions.  
WARNING: If any adjustments need to be  
made to the engine while the engine is  
running (e.g. carburetor), keep clear of all  
moving parts. Be careful of muffler, engine  
and other surrounding heated surfaces.  
Plastic  
Bearing  
Bearings  
Gear Shaft  
Figure 12  
Lubricate the gear shaft with 6-n-1 grease at least once  
a season or after every 25 hours of operation (available  
at automotive stores, or order part number 737-0170).  
Refer to Figure 9.  
Auger Bearings  
Every season lubricate the auger bearings and the  
bearings on the side of the frame with light oil. See  
IMPORTANT: Keep all grease and oil off of the rubber  
friction wheel and aluminum drive plate.  
Drive and Shifting Mechanism  
Lubricate at least once a season or after every 25 hours  
of operation. Remove the rear cover, lubricate any  
chains, sprockets, gears, bearings, shafts, and shifting  
mechanism at least once a season. Use engine oil or a  
spray lubricant. Avoid getting oil on the friction  
wheel rubber and aluminum drive plate. Refer to  
Chute Directional Control  
The worm gear on the chute directional control  
should be greased with multipurpose automotive  
grease.  
Gear Case  
The gear case is lubricated with grease at the factory  
and it does not require checking. If disassembled for  
any reason, lubricate with 2 ounces of Shell Alvania  
grease EPR00, part number 737-0168. Before  
reassembling, remove old sealant and apply new  
sealant. See Figure 12.  
Drive / Auger Control Lock  
The cams on the ends of the control rods which  
interlock the drive and auger controls must be  
lubricated at least once a season or every 25 hours of  
operation. The cams can be accessed beneath the  
handle panel. Use a multi-purpose automotive grease.  
IMPORTANT: Do not overfill the gear case, since  
damage to the seals could result. Be sure the vent plug  
is free of grease in order to relieve pressure.  
12  
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SECTION 7: SERVICING YOUR SNOW THROWER  
WARNING: Before servicing, repairing, or  
inspecting, disengage all clutch levers and  
stop engine. Wait until all moving parts  
have come to a complete stop. Disconnect  
spark plug wire and ground it against the  
engine to prevent unintended starting.  
Always wear safety glasses during operation or  
while performing any adjustments or repairs.  
To remove the shave plate, remove the carriage  
bolts and flange lock nuts which attach the shave  
plate to the snow thrower housing. See Figure 13.  
Reassemble the new shave plate, with heads of  
carriage bolts to the inside of the housing. Tighten  
securely.  
Belt Removal And Replacement  
Auger Belts  
Engine  
NOTE: It is necessary to remove both belts in order to  
change either one. If changing just one belt, be certain  
to check the condition of the other belt.  
Refer to the separate engine manual packed with your  
unit for all engine maintenance procedures.  
Augers  
Remove the plastic belt cover at the front of the  
engine by removing the two self-tapping screws.  
Drain the gasoline from the snow thrower, or place  
a piece of plastic film under the gas cap.  
Tip the snow thrower up and forward so that it rests  
on its auger housing.  
The augers are secured to the spiral shaft with two  
shear pins and cotter pins. If you hit a hard foreign  
object or ice jam, the snow thrower is designed so  
that the pins may shear. Refer to Figure 13.  
If the augers will not turn, check to see if the pins  
have sheared. Replacement shear pins and cotter  
pins have been provided with the snow thrower.  
When replacing bolts, spray an oil lubricant into  
shaft before inserting new pins.  
Self-Tapping  
Screw  
IMPORTANT: NEVER replace the auger shear pins with  
standard pins. Any damage to the auger gearbox or  
other components as a result of doing so will NOT be  
covered by your snow thrower’s warranty.  
Shave Plate and Skid Shoes  
The shave plate and skid shoes on the bottom of  
the snow thrower are subject to wear. They should  
be checked periodically and replaced when  
necessary.  
Belt Cover  
To remove skid shoes, remove four carriage bolts  
and flange lock nuts which attach them to the snow  
thrower. Reassemble new skid shoes with the four  
carriage bolts and flange lock nuts. See Figure 13.  
Figure 14  
Remove the six self-tapping screws from the frame  
cover underneath the snow thrower.  
Roll the front and rear auger belts off the engine  
pulley. See Figure 15.  
Unhook the idler spring from the hex bolt on the  
auger housing. See Figure 16.  
Shear Pin  
Carriage  
Bolt  
Cotter Pin  
Back out the stop bolt until the support bracket  
rests on the auger pulley.  
Shave  
Plate  
Flange Lock Nut  
Figure 13  
13  
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NOTE: Loosening the six nuts that connect the frame to  
the auger housing may aid in belt removal.  
Friction  
Wheel  
Drive Plate  
Drive  
Pulley  
Stop Bolt  
Auger  
Pulley  
Drive  
Belt  
Idler  
Pulley  
Idler  
Pulley  
Auger  
Belts  
Support Bracket  
Frame  
Auger Pulley  
Figure 17  
Replacing Friction Wheel Rubber  
Figure 15  
Lift the auger belt from the auger pulley, and slip  
belt between the support bracket and the auger  
pulley. Repeat this step for the front auger belt.  
Replace the auger drive belts by following  
instructions in reverse order.  
The rubber on the friction wheel is subject to wear and  
should be checked after 25 hours of operation, and  
periodically thereafter. Replace the friction wheel  
rubber if any signs of wear or cracking are found.  
Drain the gasoline from the snow thrower.  
Tip the snow thrower up and forward, so that it rests  
on the housing. Refer to Figure 8.  
NOTE: If you placed plastic film under the gas cap, be  
certain to remove it before operating the snow thrower.  
Remove six self-tapping screws from the frame  
cover underneath the snow thrower.  
Support  
Bracket  
Using a 7/8" wrench to hold the shaft, loosen, but  
do not completely remove, the hex bolt and bell  
washer on the left end of gear shaft. See Figure 18.  
Lightly tap the hex nut to dislodge the ball bearing  
from the right side of frame before removing the hex  
nut and bell washer from left end of shaft.  
Frame  
Auger  
Pulley  
Support  
Bracket  
Spring  
Rear  
Auger  
Belt  
Hex Bolt &  
Bell Washer  
Track  
Auger  
Housing  
Front  
Auger Belt  
Idler  
Spring  
Figure 16  
Drive Belt  
Follow the first four steps of the instructions for  
servicing the auger belts.  
Pull the idler pulley up and lift the belt off the engine  
pulley and friction wheel disc. See Figure 15.  
Back out the stop bolt until the support bracket  
rests on the auger pulley. See Figure 17.  
Slip the belt between the friction wheel and drive  
disc. Remove and replace the belt. Reassemble  
following the instructions in reverse order.  
Figure 18  
NOTE: The support bracket must rest on the stop bolt  
after the new belt has been assembled.  
14  
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Move the gear shaft to the right and slide the friction  
wheel assembly from the shaft. See Figure 19.  
Shift Rod  
Off-season Storage  
WARNING: Never store the machine or  
Assembly  
fuel container indoors where there is an  
open flame, spark, or pilot light such as on  
water heater, furnace, clothes dryer, or  
other gas appliance.  
Sprocket  
Spacer  
Pin  
WARNING: Drain fuel into an approved  
container outdoors, away from an open  
flame. Allow engine to cool. Extinguish  
cigarettes, cigars, pipes, and other  
sources of ignition prior to draining fuel.  
Fuel left in engine for extended periods  
deteriorates and will cause starting  
problems.  
Friction Wheel  
Assembly  
Support  
Bracket  
Shaft  
Screws  
If unit is to be stored over 30 days, prepare for storage  
as follows:  
Friction Wheel Rubber  
Hub  
Remove gasoline from carburetor and fuel tank to  
prevent gum deposits from forming on these parts  
and causing possible malfunction of engine.  
Run engine until fuel tank is empty and engine  
stops due to lack of fuel.  
Drain carburetor by pressing upward on bowl drain,  
located below the carburetor cover.  
Friction Wheel  
Plates  
NOTE: Fuel stabilizer is an acceptable alternative in  
minimizing the formation of fuel gum deposits during  
storage. Do not drain carburetor if using fuel stabilizer.  
Figure 19  
Remove the four screws from the friction wheel  
assembly. See Figure 19.  
Remove the friction wheel rubber from between the  
friction wheel plates.  
Reassemble new friction wheel rubber to the  
friction wheel plates and hub, tightening the four  
screws in rotation and with equal force.  
Position the friction wheel assembly up onto the pin  
of the shift rod assembly, and slide the shaft  
through the assembly. Reassemble in reverse  
order.  
Wipe equipment with an oiled rag to prevent rust.  
Remove spark plug and pour one ounce of engine  
oil through spark plug hole into cylinder. Cover  
spark plug hole with rag. Crank engine several  
times to distribute oil. Replace spark plug.  
Follow the lubrication recommendations found in  
the Maintenance Section.  
Always store the snow thrower in a clean, dry area.  
NOTE: When storing any type of power equipment in  
an unventilated or metal storage shed, care should be  
taken to rust proof the equipment. Using a light oil or  
silicone, coat the equipment, especially any chains,  
springs, bearings and cables.  
15  
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SECTION 8: TROUBLESHOOTING  
Problem  
Cause  
Remedy  
Engine fails to start  
1. Fuel tank empty, or stale fuel.  
1. Fill tank with clean, fresh gasoline. Fuel  
becomes stale after thirty days.  
2. Clean the fuel line.  
2. Blocked fuel line.  
3. Choke not in the ON position  
4. Faulty spark plug.  
5. Safety key not in ignition switch on engine.  
6. Spark plug wire disconnected.  
7. Primer button not being used properly.  
3. Move switch to the ON position  
4. Clean, adjust gap or replace.  
5. Insert the key fully into the switch.  
6. Connect spark plug wire.  
7. Refer to the engine manual.  
Engine runs erratic  
1. Unit running on CHOKE.  
2. Blocked fuel line or stale fuel.  
1. Move the choke lever to OFF position.  
2. Clean the fuel line; fill the tank with clean,  
fresh gasoline.  
3. Water or dirt in the fuel system.  
3. Drain the fuel tank and carburetor. Refill with  
fresh fuel.  
Loss of power  
1. Spark plug wire loose.  
2. Gas cap vent hole plugged.  
1. Connect and tighten spark plug wire.  
2. Remove ice and snow from gas cap. Be  
certain vent hole is clear.  
Excessive vibration  
1. Loose parts or damaged auger.  
1. Stop the engine immediately and disconnect  
the spark plug wire. Tighten all bolts and nuts.  
If vibration continues, have the unit serviced  
by an authorized service dealer.  
Unit fails  
to propel itself  
1. Drive control cable in need of adjustment.  
2. Drive belt loose or damaged.  
1. Adjust drive control cable. Refer to Making  
Adjustment Section.  
2. Replace drive belt. Refer to the Service  
Section.  
Unit fails  
to discharge snow  
1. Chute assembly clogged.  
1. Stop engine and disconnect spark plug wire.  
Clean chute and inside of auger housing with  
clean-out tool or a stick.  
2. Shear pin(s) sheared.  
2. Replace shear pin(s).  
3. Foreign object lodged in auger.  
3. Stop engine immediately and disconnect  
spark plug wire. Remove object from auger.  
4. Adjust auger control cable. Refer to the  
Making Adjustments Section.  
4. Auger control cable in need of adjustment.  
5. Auger belt loose or damaged.  
5. Refer to Service Section.  
16  
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NOTES  
17  
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SECTION 9: PARTS LIST FOR MODEL 7S3  
33  
45  
40  
80  
54  
55  
58  
54  
37  
40  
57  
53  
31  
41  
60  
48  
40  
45  
46  
29  
49  
35  
34  
59  
11  
30  
84  
53  
52  
38  
32  
50  
56  
51  
80  
16  
43  
68  
42  
47  
67  
83  
82  
36  
39  
43  
23  
11  
65  
61  
19  
64  
63  
13  
62  
8
28  
21  
78  
4
27  
Part of handle panel  
for reference only  
9
11  
25  
9
77  
22  
26  
24  
20  
3
6
64  
1
15  
11  
19  
2
12  
14  
81  
68  
79  
76  
75  
66  
75  
9
70  
44  
74  
16  
17  
5
73  
72  
69  
7
75  
19  
17  
70  
71  
18  
43  
10  
9
11  
75  
18  
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Model 7S3  
Ref.  
No.  
Ref.  
No.  
Part No.  
Part Description  
Shift Arm Assembly  
Part No.  
Part Description  
1. 684-0008A  
43. 736-0159  
44. 714-0145  
45. 714-0507  
46. 732-0145  
47. 732-0193  
48. 732-0746  
49. 735-0199A  
50. 736-0105  
51. 736-0509  
52. 746-0778  
53. 747-0877  
54. 748-0362  
55. 748-0363  
56. 784-5619A  
57. 784-5679  
58. 784-5680  
59. 784-5681  
60. 784-5682  
61. 710-0805  
62. 746-0901  
63. 746-0896  
64. 731-1313C  
65. 784-5604  
66. 705-5266  
67. 736-0506A  
68. 710-0895  
69. 731-1379D  
70. 741-0475  
71. 784-5647  
72. 710-0276  
73. 684-0053B  
74. 731-0851A  
75. 712-04064  
76. 731-1300D  
77. 731-04427A  
78. 784-5594  
79. 710-04071  
80. 716-0398  
81. 710-0262  
82. 725-1756  
83. 736-0226  
84. 747-1136  
Flat Washer,.349 x.879 x.063  
Click Pin  
Cotter Pin  
Compression Spring  
Compression Spring  
Torsion Spring  
Rubber Bumper  
Bell Washer  
Flat Washer  
Drive Cable Z- Fitting  
Cam Rod  
2. 747-0737  
3. 710-0449  
4. 710-0458  
5. 710-0643  
6. 710-0788  
7. 710-1880  
8. 711-0677  
9. 712-04063  
10. 710-0703  
11. 714-0104  
12. 720-0201A  
13. 725-1757  
14. 720-0284  
15. 726-0100  
16. 710-0597  
17. 736-0119  
18. 736-0185  
19. 736-0275  
20. 736-0451  
21. 747-0620A  
22. 747-0621  
23. 629-1094  
24. 749-0951  
25. 749-0952A  
26. 749-0953A  
27. 750-0963  
28. 710-0837  
29. 684-0036A  
30. 684-0037B  
31. 710-1003  
32. 712-0271  
33. 712-0693  
34. 720-0232  
35. 725-1759  
36. 725-1672  
37. 731-2564  
38. 684-0102  
39. 710-0459A  
40. 710-0599  
41. 711-0653  
42. 712-0116  
Chute Directional Control  
Carriage Screw 5/16-18 x 2.25  
Carriage Bolt 5/16-18 x 1.75  
Hex Bolt 5/16-18 x 1.0  
Tt Screw 1/4-20 x 1.0  
Hex Bolt 5/16-18 x 0.75  
Ferrule  
Flange Lock Nut  
Carriage Screw, 1/4-20 x.75  
Hairpin Clip  
Chute Directional Control Knob  
Heated Grip  
Handle Knob Assembly  
Push Cap  
Hex Screw, 1/4-20 x 1.00  
Lock Washer  
Flat Washer  
Flat Washer  
Saddle Washer  
Upper Shift Rod  
Lower Shift Rod  
Heated Grips Harness Ass’y  
Lower Handle  
Upper Handle RH  
Handle Lock Cam  
Handle Lock Pawl  
Shift Handle  
Handle Support Bracket LH  
Handle Support Bracket RH  
Support Bracket LH  
Support Bracket RH  
Hex Bolt 5/16-18 x 1.5  
Chute Deflector Cable w/Clip  
Chute Deflector Control Cable  
Chute Cable Guide  
Chute Distance Control  
Chute Directional Control Bracket  
Special Washer  
Hi-Lo Screw 1/4-15 x 0.75  
Chute Adapter  
Plastic Bushing  
Chute Directional Control Bracket  
Carriage Screw, 5/16-18 x 1.00  
Lower Chute Directional Control  
Flange Keeper  
Flange Lock Nut 1/4-20  
Lower Chute  
Upper Handle LH  
Shift Rod Connector  
Screw, #10-16 x.625  
Handle Engagement Assembly RH  
Handle Engagement Assembly LH  
B Screw #10-16 x 0.625  
Hex Sems Nut 1/4-20  
Jam Nut, 15/32-32  
Shift Knob  
Halogen Lamp, 50W, 12V  
Lamp Housing  
Handle Panel  
Handle Panel Assembly w/Tilt  
Hex Bolt 3/8-24 x 1.5  
TT Screw 1/4-20 x 0.5  
Clevis Pin  
Upper Chute  
Cable Bracket  
Carriage Bolt 5/16-18 x 1.0  
Toggle Switch Lock Ring  
Carriage bolt 5/16-18 x 1.5  
Single Throw Toggle Switch  
Flat Washer  
Jam Lock Nut 3/8-24  
Headlight Retainer  
19  
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Model 7S3  
2
3
20  
4
5
6
9
8
7
14  
13  
12  
10  
13  
14  
16  
11  
20  
15  
11  
19  
25  
18  
22  
14  
23  
14  
46  
44  
42  
38  
26  
28  
47  
40  
33  
27  
39  
43  
49  
41  
48  
45  
35  
34  
37  
32  
36  
30  
1
29  
31  
17  
21  
24  
20  
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Model 7S3  
Ref.  
No.  
Ref.  
No.  
Part No.  
Part Description  
Part No.  
Part Description  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
731-04870  
756-0178  
784-5632B  
710-0347  
738-0281  
736-0174  
732-0611  
712-3068  
05931A  
Spacer, 1.25OD x.75ID x 1.00 Lg  
Flat Idler  
Auger Idler Arm  
Hex Cap Screw 3/8-16 x 1.75  
Shoulder Screw  
Wave Washer  
Extension Spring  
Hex Nut 5/16-18  
Housing  
26. 715-0114  
27. 741-0661A  
28. 684-04108  
29. 736-0188  
30. 741-0493A  
31. 684-04107  
32. 738-04124A  
33. 618-0123  
34. 618-0124  
35. 710-0642  
36. 711-04283  
37. 714-0161  
38. 715-04021  
39. 717-0528A  
40. 717-0526  
41. 718-04071  
42. 721-0325  
43. 721-0327  
44. 736-0351  
45. 736-3084  
46. 741-0662  
47. 741-0663  
48. 618-04206  
49. 721-0179  
Pin  
Flange Bearing  
Spiral Assembly RH  
Flat Washer  
Flange Bushing  
Spiral Assembly LH  
Shear Pin,.25 x 1.50  
RH Housing (Incl. Ref. # 27 & 49)  
LH Housing (Incl. Ref. # 27 & 49)  
Self Tapping Screw, 1/4-20 x.75  
Auger Axle, 28”  
Hi-Pro Key  
Dowel Pin  
Worm Gear, 20-tooth  
Worm Shaft  
Thrust Collar  
Grease Plug  
Grease Seal  
Flat Washer  
Flat Washer  
Flange Bearing  
Flange Bearing  
Gearbox Assembly Complete, 28”  
Oil Seal  
10. 741-0309  
11. 710-0451  
12. 705-5226  
13. 684-04129A  
14. 712-04063  
15. 731-2635  
16. 731-2643  
17. 790-00087A  
18. 710-0604A  
19. 725-0157  
20. 712-04065  
21. 741-0245  
22. 784-5580  
23. 790-00118  
24. 714-04040  
25. 684-0065  
Ball Bearing  
Carriage Bolt, 5/16-18 x.75  
Chute Reinforcement  
Auger Housing Assembly 28”  
Flange Lock Nut 5/16-18  
Clean-Out Tool Mount  
Clean-Out Tool  
Bearing Housing  
Hex Screw 5/16-18 x.625  
Cable Tie  
Flange Lock Nut 3/8-16  
Hex Flange Bearing  
Skid Shoe  
Shave Plate  
Bow Tie Cotter Pin  
Impeller Assembly  
NOTE: For painted parts, please refer to  
the list of color codes below. Please add  
the applicable color code, wherever  
needed, to the part number to order a  
replacement part. For instance, if a part  
numbered 700-xxxx is painted Yard-Man  
Green, the part number to order would be  
700-xxxx-0665.  
Yard-Man Green: 0665  
Yard-Man Yellow: 0674  
Powder Black: 0637  
21  
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Model 7S3  
17  
1
27  
2
26  
3
4
8
9
7
4
10  
11  
12  
16  
19  
15  
6
5
16  
16  
19  
16  
21  
22  
23  
13  
14  
18  
25  
20  
24  
22  
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Model 7S3  
Ref.  
No.  
Part No.  
710-1652  
731-1324  
732-0710  
710-0627  
710-3005  
05896A  
Part Description  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
Hex Washer Screw 1/4-20 x.625  
Belt Cover  
Extension Spring  
Hex Screw 5/16-24 x.75  
Hex Cap Screw 3/8-16 x 1.25  
Drive Clutch Idler Bracket  
Shoulder Spacer  
Pulley Half  
748-0234  
756-0987  
754-0346  
V-Belt  
10. 756-0986  
11. 736-0270  
12. 710-0230  
13. 756-0313  
14. 710-1245B  
15. 712-0181  
16. 756-0569  
17. 710-0602  
18. 736-0505  
19. 754-0430B  
20. 756-0967  
21. 736-0247  
22. 736-0331  
23. 710-0696  
24. 748-0360  
25. 710-0654A  
26. 629-0071  
27. 732-0705  
Pulley Half  
Bell Washer  
Hex Cap Screw 1/4-28 x.50  
Flat Idler  
Lock Hex Cap Screw 5/16-24  
Lock Jam Nut 3/8-16  
Pulley Half  
Self Tapping Screw, 5/16-18 x 1.00  
Flat Washer  
Belt  
Auger Pulley  
Flat Washer 3/8 x 1.25 OD  
Bell Washer  
Hex Cap Screw 3/8-24  
Adapter Pulley  
Hex Screw 3/8-16 x 1.0  
Extension Cord  
Cable Control Wire  
IMPORTANT: For a proper working machine, use Factory  
Approved Parts.  
V-BELTS are specially designed to engage and disengage  
safely. A substitute (non OEM) V-Belt can be dangerous by  
not disengaging completely  
23  
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Model 7L3  
34  
33  
22  
32  
35  
32  
30  
23  
25  
31  
19  
26  
29  
21  
32  
27  
24  
20  
30  
16  
19  
18  
29  
17  
26  
19  
27 32  
25  
24  
22  
20  
10  
23  
18  
19  
36  
15  
2
21  
28  
14  
11  
30  
12  
3
29  
8
13  
4
9
1
7
6
5
2
38  
39  
2
40  
41  
37  
24  
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Model 7S3  
Ref.  
No.  
Ref.  
No.  
Part No.  
Part Description  
Part No.  
Part Description  
Frame Cover  
AB Screw 1/4-20 x.625  
Spacer  
Extension Spring  
Jam Nut 3/8-24  
Bell Washer  
Friction Whl Support Bracket Ass’y  
Drive Cable  
Friction Disc  
Front Support Guide Bracket  
10T Sprocket  
Auger Cable  
22. 736-0270  
23. 736-0176  
24. 741-1111  
25. 710-0643  
26. 748-0234  
27. 710-0604A  
28. 684-0031  
29. 738-0924  
30. 756-0625  
31. 784-5688  
32. 710-0599  
33. 784-5590  
34. 684-0014B  
35. 784-5687A  
36. 710-0809  
37. 618-0063A  
38. 718-0301A  
39. 735-0243B  
40. 790-00011  
41. 790-00010  
Bell Washer.265 ID x.75 OD  
Flat Washer 1/4 ID x.93 OD  
Hex Flange Bearing  
Hex Cap Screw 5/16-18 x 1”  
Shoulder Spacer  
Tap Screw 5/16-18 x.625  
Frame Assembly  
Hex Screw 1/4-28 x.375  
Cable Roller  
Drive Cable Guide Bracket  
Tap Screw 1/4-20 x.5  
Shift Frame Bracket  
Track Shift Rod Assembly  
Auger Cable Guide Bracket  
Tap Screw 1/4-20 x 1.250  
Friction Wheel Bearing Ass’y  
Friction Wheel Hub  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
784-5648  
710-1652  
748-0190  
732-0264  
712-0711  
736-0105  
684-0021  
746-0898B  
656-0012A  
10. 784-5689A  
11. 713-0413  
12. 746-0897  
13. 750-0997  
14. 711-1042  
15. 684-0042C  
16. 736-0160  
17. 714-0474  
18. 741-0563  
19. 736-0242  
20. 710-0538  
21. 710-0875  
Spacer  
Hex Track Drive Shaft  
Friction Wheel Assembly  
Flat Washer  
Cotter Pin  
Ball Bearing  
Bell Washer  
Hex Cap Screw 5/16-18 x.625  
Tap Screw 1/4-20 x.75  
Friction Wheel Rubber  
Friction Plate  
Friction Plate  
NOTE: For painted parts, please refer to  
the list of color codes below. Please add  
the applicable color code, wherever  
needed, to the part number to order a  
replacement part. For instance, if a part  
numbered 700-xxxx is painted Yard-Man  
Green, the part number to order would be  
700-xxxx-0665.  
Yard-Man Green: 0665  
Yard-Man Yellow: 0674  
Powder Black: 0637  
25  
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Model 7S3  
44  
42  
56  
45  
41  
54  
1
50  
47  
51  
46  
51  
56  
2
53  
54  
55  
52  
3
48  
46  
49  
5
9
11  
4
6
10  
30  
37  
8
38  
12  
7
16  
19  
36  
40  
20  
35  
39  
32  
29  
23  
33  
37  
26  
15  
13  
27  
22  
17  
28  
34  
33  
30  
31  
20  
32  
18  
21  
25  
19  
14  
24  
22  
26  
21  
16  
18  
15  
13  
17  
14  
26  
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Model 7S3  
Ref.  
No.  
Ref.  
No.  
Part No.  
Part Description  
Part No.  
618-0169A  
Part Description  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
19.  
20.  
21.  
22.  
23.  
24.  
25.  
26.  
27.  
28.  
720-0223  
710-0604A  
784-5642  
710-0157  
736-0242  
684-0038  
710-0459A  
712-0214  
748-0353A  
750-0547  
784-5609  
684-0009  
712-0346  
731-1292  
736-0272  
731-1538A  
631-0032  
750-0995  
738-0140  
736-0406  
750-0909  
712-04063  
618-0044  
684-0024  
710-1231  
784-5639  
711-0911  
713-0233  
Grip  
29.  
30.  
31.  
32.  
33.  
34.  
35.  
36.  
37.  
38.  
39.  
40.  
41.  
42.  
44.  
45.  
46.  
47.  
48.  
49.  
50.  
51.  
52.  
53.  
54.  
55.  
56.  
Track/Steering Shaft Assembly  
Track Hub Assembly  
Chain  
Flange Bearing  
Flat Washer  
Axle Assembly  
Spacer  
RH Dogg Assembly  
Spacer  
Extension Spring  
Tap Screw, 5/16-18 x 1  
Track Housing  
Steering Cable  
Steering Trigger  
Screw, #10-24 x 1.375  
Retaining Ring  
Carrier Assembly  
Ring Gear  
Retaining Ring  
13-Tooth Sprocket  
Track Steering Drive Shaft  
Flat Washer  
Tap Screw, 5/16-18 x.625  
Track Lockout Plate  
Hex Cap Screw, 5/16-24 x.75  
Bell Washer  
Track Lock Handle Assembly  
Hex Cap Screw, 3/8-24 x 1.5  
Hex Nut, 3/8-24  
Lift Shaft Drive  
683-0024  
713-0437  
741-0339  
736-0287  
611-0053  
750-0904  
618-0043  
750-0903  
732-0209  
710-0602  
719-0295A  
746-0948A  
746-0950A  
710-1233  
716-0114  
618-0046B  
717-1211B  
716-0115  
713-0414  
711-0912  
736-0502  
736-0336  
715-0120  
717-1209A  
717-1210A  
725-0157  
Spacer  
Steering Cable Bracket  
Pivot Rod Assembly  
Jam Nut, 1/2-20  
Snow Track  
Flat Washer  
Track Drive Wheel  
Track Idler Wheel  
Spacer  
Screw,.435 x.178-5/16 x.56  
Flat Washer  
Spacer  
Flange Lock Nut, 5/16-18  
LH Dogg Assembly  
Idler Axle Assembly  
Eye Bolt  
Track Side Plate  
Actuator Shaft  
Flat Washer  
Spiral Pin  
12-Tooth Gear  
18-Tooth Gear  
Cable Tie  
Chain  
27  
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MANUFACTURER’S LIMITED WARRANTY FOR:  
The limited warranty set forth below is given by MTD LLC with  
respect to new merchandise purchased and used in the  
United States, its possessions and territories.  
e.  
MTD does not extend any warranty for products sold or  
exported outside of the United States, its possessions  
and territories, except those sold through MTD’s  
authorized channels of export distribution.  
Replacement parts that are not genuine MTD parts.  
Transportation charges and service calls.  
“MTD” 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  
materials 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 part, accessory or attachment not  
approved by MTD for use with the product(s) covered by this  
manual will void your warranty as to any resulting damage.  
f.  
g.  
No implied warranty, including any implied warranty of  
merchantability of 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, 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 MTD. During the period of the warranty, the  
exclusive remedy is repair or replacement of the product  
as set forth above.  
The provisions as set forth in this warranty provide the  
sole and exclusive remedy arising from the sale. MTD  
shall not be liable for incidental or consequential loss or  
damage including, without limitation, expenses incurred  
for substitute or replacement lawn care services or for  
rental expenses to temporarily replace a warranted  
product.  
Normal wear parts are warranted to be free from defects in  
material and workmanship for a period of thirty (30) days from  
the date of purchase. Normal wear parts include, but not  
limited to items such as: batteries, belts, blades, blade  
adapters, grass bags, rider deck wheels, seats, snow thrower  
skid shoes, shave plates, auger spiral rubber and tires.  
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, check your  
Yellow Pages, or contact MTD LLC at P.O. Box 361131,  
Cleveland, Ohio 44136-0019, or call 1-800-800-7310 or log  
Some states do not allow the exclusion or limitation of  
incidental or consequential damages, or limitations on how  
long an implied warranty lasts, so the above exclusions or  
limitations may not apply to you.  
In no event shall recovery of any kind be greater than the  
amount of the purchase price of the product sold. Alteration  
of 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 misuse or inability to use the product.  
This limited warranty does not provide coverage in the  
following cases:  
a.  
The engine or component parts thereof. These items  
may carry a separate manufacturer’s warranty. Refer  
to applicable manufacturer’s warranty for terms and  
conditions.  
This limited warranty shall not extend to anyone other than the  
original purchaser or to the person for whom it was purchased  
as a gift.  
b.  
c.  
Log splitter pumps, valves, and cylinders have a  
separate one year warranty.  
HOW STATE LAW RELATES TO THIS WARRANTY: This  
limited warranty gives you specific legal rights, and you may  
also have other rights which vary from state to state.  
Routine maintenance items such as lubricants, filters,  
blade sharpening, tune-ups, brake adjustments, clutch  
adjustments, deck adjustments, and normal  
deterioration of the exterior finish due to use or  
exposure.  
IMPORTANT: Owner must present Original Proof of  
Purchase to obtain warranty coverage.  
d.  
Service completed by someone other than an  
authorized service dealer.  
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: 1-800-800-7310  
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