Yard-Man 31AE993J401 User Manual

Operator’s Manual
45” Snow Thrower
Model 31AE993J401
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
Content Page
Important Safe Operation Practices ...................................................................................3
Assembling Your Snow Thrower........................................................................................5
Know Your Snow Thrower .................................................................................................8
Operating Your Snow Thrower...........................................................................................9
Making Adjustments...........................................................................................................11
Maintaining Your Snow Thrower ........................................................................................12
Servicing Your Snow Thrower............................................................................................14
Off-Season Storage ..........................................................................................................17
Troubleshooting .................................................................................................................18
Parts List ...........................................................................................................................19
This Operator’s Manual is an important part of your new snow thrower. It will help you to assemble, prepare and maintain the unit for best performance. Please read and understand what it says.
Before you start assembling your new snow thrower, please locate the model plate on the equipment and copy the information from it in the space provided below. The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer.
You can locate the model number by standing behind the unit in the operating position and looking down at the dash panel . A sample model plate is explained below. For future reference, please copy the model number and the serial number of the equipment in the space below.
(Model Number)
(Serial Number)
CLEVELAND,OH 330-220-4683 800-800-7310
Copy the model number here:
Copy the serial number here:
The engine manufacturer is responsible for all engine-related issues with regards to performance, power-rating, specifications, warranty and service. Please refer to the engine manufacturer’s Owner’s/Operator’s Manual packed separately with your unit for more information.
Please do NOT return the unit to the retailer from which it was purchased, without first contacting Customer Support.
If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call 1- (330) 220-4MTD (4683) or 1- (800)-800-7310 to reach a Customer Support representative. Please have your unit’s model number and serial number ready when you call. See previous section to locate this information. You will be asked to enter the serial number in order to process your call.
For more details about your unit, visit our website at www.yardman.com
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 symbolheed its warning.
WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain
or emit chemicals known to State of California to cause cancer and 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.
1. Read, understand, and follow all instructions on the machine and in the manual(s) before attempting to assemble and operate. Keep this manual in a safe place for future and regular reference and for ordering replacement parts.
2. Be familiar with all controls and their proper operation. Know how to stop the machine and disengage them quickly.
3. Never allow children under 14 years old to operate this machine. Children 14 years old and over should read and understand the operation instructions and safety rules in this manual and should be trained and supervised by a parent.
4. Never allow adults to operate this machine without proper instruction.
5. Thrown objects can cause serious personal injury. Plan your snow-throwing pattern to avoid discharge of material toward roads, bystanders and the like.
6. Keep bystanders, helpers, pets and children at least 75 feet from the machine while it is in operation. Stop machine if anyone enters the area.
7. Exercise caution to avoid slipping or falling, especially when operating in reverse.
1. Thoroughly inspect the area where the equipment is to be used. Remove all doormats, newspapers, sleds, boards, wires and other foreign objects, which could be tripped over or thrown by the auger/impeller.
2. Always wear safety glasses or eye shields during operation and while performing an adjustment or repair to protect your eyes. Thrown objects which ricochet can cause serious injury to the eyes.
3. Do not operate without wearing adequate winter outer garments. Do not wear jewelry, long scarves or other loose clothing, which could become entangled in moving parts. Wear footwear which will improve footing on slippery surfaces.
4. Use a grounded three-wire extension cord and receptacle for all units with electric start engines.
5. Adjust collector housing height to clear gravel or crushed rock surfaces.
6. Disengage all clutch levers before starting the engine.
7. Never attempt to make any adjustments while engine is running, except where specifically recommended in the operators manual.
8. Let engine and machine adjust to outdoor temperature before starting to clear snow.
9. To avoid personal injury or property damage use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Serious personal injury can occur when gasoline is spilled on yourself or your clothes, which can ignite. Wash your skin and change clothes immediately.
a. Use only an approved gasoline container. b. Extinguish all cigarettes, cigars, pipes and other
sources of ignition. c. Never fuel machine indoors. d. Never remove gas cap or add fuel while the
engine is hot or running. e. Allow engine to cool at least two minutes before
refueling. f. Never over fill fuel tank. Fill tank to no more than
½ inch below bottom of filler neck to provide space
for fuel expansion. g. Replace gasoline cap and tighten securely. h. If gasoline is spilled, wipe it off the engine and
equipment. Move machine to another area. Wait 5
minutes before starting the engine. i. Never store the machine or fuel container inside
where there is an open flame, spark or pilot light
(e.g. furnace, water heater, space heater, clothes
dryer etc.). j. Allow machine to cool at least 5 minutes before
1. Do not put hands or feet near rotating parts, in the auger/ impeller housing or discharge chute. Contact with the rotating parts can amputate hands and feet.
2. The auger/impeller clutch lever is a safety device. Never bypass its operation. Doing so makes the machine unsafe and may cause personal injury.
3. The clutch levers must operate easily in both directions and automatically return to the disengaged position when released.
4. Never operate with a missing or damaged discharge chute. Keep all safety devices in place and working.
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.
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.
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 clutch levers 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 discharge chute, 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 discharge chute while engine is running. Shut off engine and remain behind handles until all moving parts have stopped before unclogging.
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.
Maintenance & 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 clutch levers 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.
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 manufacturers (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 operators 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.
11. Always refer to the operators manual for proper instructions on off-season storage.
Your Responsibility
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. The safety labels are shown below for your reference.
Remove staples from the top, sides, and ends of the shipping crate.
Set panels aside to avoid tire punctures or personal injury.
Remove and discard plastic bag that covers unit.
Roll the unit out of the crate.
Check the crate for loose parts before discarding.
Loose Parts
The augers are secured to the auger shaft with two shear bolts and hex lock nuts. If you hit a foreign object or ice jam, the snow thrower is designed so that the bolts may shear. Two replacement shear bolts and nuts are provided for your convenience. See Figure 1. Store these safely until needed.
Shear Bolts
Figure 1
with standard hex bolts. Any damage to the auger gearbox or other components from using standard bolts will not be covered by your snow throwers warranty.
NEVER replace the auger shear bolts
Hex Lock Nuts
end of each cable) is attached to its actuator bracket.
Upper Handle
Steering Cable
Tighten these
Wing Nuts
Lower Handle
Cable Tie
Wing Nut
Upper Shift Rod
Suppor t Tubes are omit ted from the illustration for cl arity.
Upper Shift Rod
Clutch Rod
Carriage Bolt
Items Required For Assembly
1. Pair of pliers
2. Engine oil
3. Fresh gasoline
Before Assembly
Disconnect spark plug wire and ground it against the engine to prevent unintended starting.
NOTE: All references in this manual to the left or right side of the snow thrower is from the operating position only. Exceptions, if any, will be specified.
Assembling Handle
Remove the lower plastic wing nut, cupped washer and carriage bolt from each side of the lower handle. See Figure 2.
Raise the upper handle assembly until it locks over the lower handle.
Look at the lower rear of the snow thrower frame to be sure all the cables are aligned with the cable roller guides. Make sure the spring (found at the
Figure 2
Secure the upper handle and lower handle with the two plastic wing nuts, cupped washers and carriage bolts previously removed. Attach these hardware on the lower hole in the handles. See Figure 2.
Tighten the two wing nuts already in place on the upper holes and secure the handles firmly.Slide the shift rod connector down over the end of the lower shift rod. Tap the connector until it locks over the lower shift rod. 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 direction of movement.
Attaching Chute Crank
Remove the hairpin clip from the upper chute crank and slide the upper chute crank through the upper chute crank bracket and into the lower chute crank. A pair of pliers may help in this job.
Align the two holes on both chute cranks and insert the hairpin clip removed earlier, through these holes. See Figure 3.
Upper Chute Crank
Upper Chute Crank Bracket
Hairpin Clip
Lower Chute Crank
Figure 3
If not already attached, slip the cables that run from the handle panel to the discharge chute into the cable guide located on top of the engine. See Figure 4.
Discharge Chute
Cable Guide
Figure 4
Unwrap the headlight wire which is attached to the headlight, beneath the handle panel. Wind the headlight wire around the lower right handle until excess slack is removed. See Figure 5.
Plug the wire from the headlight into the alternator lead coming from the right side of the engine underneath the fuel tank.
Alternator Lead
Chute Clean-Out Tool
This tool, along with the electric cord, is fastened with a cable tie to the rear ofthe auger housing for shipping purposes. Cut the cable tie and remove the tool before operating the snow thrower.
Final Adjustments
Make these final adjustments before operating your snow thrower for the first time. Failure to follow these instructions may cause damage to the snow thrower.
NOTE: If you have a question about the terms used in these instructions, refer to the descriptions and illustration starting on page 8.
Traction Control & Shift Lever
Perform the following test to determine need for adjustment:
Move the shift lever into sixth (6) position.
With the traction control released, push the snow
thrower forward, then pull it back. The machine should move freely.
Engage the traction control and attempt to move the machine both forward and back, resistance should be felt.
Move the shift lever into the fast reverse (R2) position and repeat the previous two steps.
If you experienced resistance rolling the unit, either when repositioning the shift lever from 6 to R2 or when attempting to move the machine with the traction control released, adjust the traction control immediately. To adjust, proceed as follows:
Loosen the jam nut on the traction control cable and unthread the cable one full turn.
Recheck adjustment.
Retighten the jam nut to secure the cable when
correct adjustment is reached.
NOTE: For more details, refer to Traction Control Adjustment on page 11.
Auger Control
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, but should NOT be tight.
Lamp Wi re
Alternator Lead
Wheels are omitted from illustration for clarity.
Figure 5
WARNING: Do not over-tighten the cable.
Over-tightening may prevent the auger from disengaging and compromise the safety of the snow thrower.
In a well-ventilated area, start the snow thrower engine as instructed on page 9. Make sure the throttle is set in the fast position.
While standing in the operators 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 lever in the disengaged “up” position, walk to the front of the machine.
Confirm that the auger has completely stopped rotating and shows no signs of motion.
Push the cable coupler through the end of the spring to expose the lock nut. See Figure 7.
If the auger shows any signs of rotating, immediately return to the operators position and shut off the engine. Wait for all moving parts to stop before readjusting the auger control cable.
To readjust the control cable, unhook the spring
(found on the end of the auger cable) from the auger actuator bracket. See Figure 6.
Tra ction
Actuator Bracket
Aug er
Actuator Bracket
Lock Nut
Figure 7
Thread the lock nut outward (down the coupler) three full turns to provide more slack in the cable and reattach the spring to the bracket.
Repeat auger control test to verify for proper adjustment. Repeat previous steps to adjust more, if necessary.
Tire Pressure (Pneumatic Tires)
The tires are overinflated for shipping purposes.
Check tire pressure. Maintain pressure between 10 and 14 psi.
NOTE: If the tire pressure is not equal in all tires, the unit may pull to one side or the other.
WARNING: Maximum tire pressure under
any circumstance is 30 psi. Equal tire pressure should be maintained at all times. Excessive pressure (over 30 psi) when seating beads may cause tire/rim assembly to burst with force sufficient to cause serious injury.
Figure 6
WARNING: Be familiar with all the controls on the snow thrower and their proper operation. Know how to
stop the machine and disengage them quickly.
Compare the figure below and description of controls in this section with your equipment before starting unit.
Traction Control / Auger Control Lock
Fuel Tank
Discharge Chute
Skid Shoe
Shift Lever
Auger Drive Control
Wheel Steering Control
Safety Ignition Key
Figure 8
Chute Tilt Control
Chute Crank
Throttle Control
Electric Starter Button
Switch Box
Recoil Starter Handle
Traction Control / Auger Control Lock
The traction control is located on the right handle. Squeeze the traction control to engage the wheel drive. Release to stop.
This same lever also locks the auger control so you can operate the chute crank without interrupting the snow throwing process. If the auger control is engaged simultaneously with the traction control, the operator can release the auger control (on the left handle) and the augers will remain engaged. Release the traction control to stop the augers and wheel drive (the auger control must also be released).
Always release the traction 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. The traction control must also be released in order to stop auger.
Shift Lever
The shift lever is located in the center of the handle panel and is used to determine ground speed and direction of travel. It can be moved into any of eight positions.
Always release traction
the control before changing speeds.
Forward: The snow thrower has six forward (F) speeds. Position one (1) is the slowest and position six (6) is the fastest.
Reverse: The snow thrower has two reverse (R) speedsR1 is the slower of the two.
Discharge Chute
The angle of the discharge chute controls the distance that the snow is thrown. Tilt the discharge chute up for greater distance; tilt down for less distance.
Chute Crank
The chute crank is located on the left hand side of the snow thrower. Use it to change the direction in which snow is thrown. Avoid targetting persons, animals or cars and buildings.
Chute Tilt Control
The distance snow is thrown can be changed by adjusting the angle of the chute assembly. Move the chute tilt control forward to decrease the distance, toward the rear to increase.
Wheel Steering Controls
The left and right wheel steering controls are located on the underside of the handles. See .
Squeeze the right control to turn right; squeeze the left control to turn left.
NOTE: Operate the snow thrower in open areas until you are familiar with these controls.
Skid Shoe
The skid shoe position is determined by the condition of the ground from where snow has to be removed. Higher the snow level, lower will be the skid shoe. Adjust it accordingly.
The headlight is on whenever the engine is running.
Throttle Control
The throttle control is located on the engine. It regulates the speed of the engine.
Safety Ignition Key
The safety ignition key must be fully inserted in the switch before the unit will start. Remove key when snow thrower is not in use. Do not attempt to turn the key.
Chute Clean-Out Tool
The chute clean-out tool is designed to clear a clogged discharge chute. Refer to page 11 for instructions on how to properly use it.
WARNING: Never use your hand to clear a
clogged discharge chute. Shut off engine and remain behind handles until all moving parts have stopped before unclogging.
Before Starting
Read and understand all instructions and warnings on the machine and in this manual before operating.
Gas & Oil Fill-Up
Service the engine with gasoline and oil as instructed in the engine manual shipped with the snow thrower.
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 cap is provided inside the fuel fill opening on the fuel tank. Remove and discard this cap before filling up the tank. Use the separate fuel tank cap to close after fill-up.
To Start Engine
NOTE: If unit shows any sign of motion (drive or augers) with the clutch grips disengaged, shut engine
off immediately. Readjust as instructed in the Final Adjustments in the Assembly Section.
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.
Make certain the auger and drive clutch levers are in the disengaged (released) position.
Move throttle control up to FAST position.
Insert ignition key into slot. Be certain it snaps into
place. Do not turn key.
NOTE: Engine will not start unless ignition key is
inserted into ignition slot in carburetor cover.
Electric Starter
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.
If your home electrical system is grounded, but a three-hole receptacle is not available, one
should be installed by a licensed electrician before using the electric starter.
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