MTD 31AE993I401 Snow Blower Operator's Manual

Operator’s Manual

33-inch Two Stage

Snow Thrower

Model 31AE993I401

IMPORTANT: Read safety rules and instructions carefully before operating equipment.

Warning:

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, 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.

FORM NO . 770-10278D.fm

(6/2003)

TABLE OF CONTENTS

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

FINDING MODEL NUMBER

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)

Copy the model number here:

Copy the serial number here:

www.yardman.com

MTD LLC

P. O. BOX 361131

CLEVELAND,OH 44136

330-220-4683

800-800-7310

ENGINE INFORMATION

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.

CALLING CUSTOMER SUPPORT

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

2

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 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.

Training

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.

Preparation

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 operator’s 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 storing.

Operation

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.

3

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 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.

11. Always refer to the operator’s 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.

4

SECTION 2: ASSEMBLING YOUR SNOW THROWER

Unpacking

• Remove staples from the top, sides, and ends of the shipping crate. Set panels aside to avoid tire damage 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

Hex Lock

Nuts

Upper Handle

Steering Cable

Tighten these

Wing Nuts

Lower Handle

Cable Tie

Figure 1

IMPORTANT:

NEVER replace the auger shear bolts with standard hex bolts. Any damage to the auger gearbox or other components from using standard bolts will not be covered by your snow thrower’s warranty.

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 end of each cable) is attached to its actuator bracket

Upper Shift Rod

Shift Rod

Connector

Cupped

Washer

Carriage

Wing

Bolt

Nut

Upper

Shift Rod

NOTE:

Support Tubes are omitted from the illustration for clarity.

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.

5

Discharge

Chute

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.

Cable

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

Alternator

Lead

Lamp Wire

NOTE:

Wheels are omitted from illustration for clarity.

Figure 5

Chute Clean-Out Tool

• This tool and the electric cord are fastened with a cable tie to the rear ofthe auger housing for shipping purposes. Cut the cable tie and remove electric cord 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.

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 operator’s position (behind the snow thrower) engage the auger.

6

• Allow the auger to remain engaged for approximately ten 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.

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 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.

• Push the cable coupler through the end of the spring to expose the lock nut. See Figure 7.

Coupler

Spring

Cable

Les s S lac k

M ore

Sla ck

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.

Auger

Spring

Traction

Spring

Traction

Actuator Bracket

Auger

Actuator Bracket

Figure 6

7

•

SECTION 3: KNOWING YOUR SNOW THROWER

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 with your equipment and be familiar with its controls before starting it.

Traction Control /

Auger Control Lock

Headlight

Shift Lever

Chute Tilt Control

Fuel Tank

Auger Drive Control

Discharge Chute

Oil Fill

Chute Crank

Chute Clean-Out Tool

Wheel Steering

Control

Auger

Skid Shoe

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).

Figure 8

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.

IMPORTANT:

Always release traction control before changing speeds.

IMPORTANT:

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.

F

2

1

6

5

4

3

Forward: The snow thrower has six forward (F) speeds. Position one (1) is the slowest and position six (6) is the fastest.

R R1

R2

Reverse: The snow thrower has two reverse (R) speeds—R1 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.

8

Chute Crank

The chute crank is located on the left side of the snow thrower. Use it to change the direction in which snow is thrown. Avoid targetting persons, animals or cars and buildings.

C L O C K W I S E T O

DISCHARGE LEFT

COUNTER CLOCKWISE

TO DISCHARGE RIGHT

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.

Headlight

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.


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.

SECTION 4: OPERATING YOUR SNOW THROWER

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 proper 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 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

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.

9

• 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.

If you have a grounded three-prong receptacle, proceed as follows:

• Connect power cord to switch box on engine. Plug the other end of power cord into a three-hole, grounded 120 volt AC receptacle.

• Rotate choke knob to ON position.

• Push primer button three times, making sure to cover vent hole when pushing.

• Push starter button on top of the engine to crank engine. As you crank the engine, move choke

Primer

Vent Hole 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.

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. Always cover vent hole in primer button when pushing. At temperatures below 15°F, additional priming may be necessary .

• 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.

• Repeat the previous steps until engine starts.

To Stop Engine

• Run engine for a few minutes before stopping to help dry off any moisture on the engine.

• To prevent possible freeze-up of 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.

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.

• Move throttle control to “stop” or “off” position.

• Remove ignition key. Do not turn key. Disconnect the spark plug wire from the spark plug to prevent accidental starting while equipment is unattended.

NOTE: Keep key 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.

To Engage Wheel Drive

• With the engine running near top speed, move shift lever to one of the eight positions to set desired speed and direction. Select speed appropriate for the snow conditions that exist.

NOTE: Use slower speeds in higher snow and/or until

you are familiar with the snow thrower operation.

• Squeeze traction control against the right handle to move the snow thrower; release it to stop.

IMPORTANT:

NEVER move the shift lever without first releasing the traction control. Doing so will cause premature wear on the drive system’s friction wheel.

To Engage Augers

• To engage augers and start snow throwing, squeeze the auger control against the left handle.

• To disengage power to the augers, release both the auger control and the traction control, if engaged.

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.

WARNING:

The temperature of the muffler and the surrounding areas may exceed 150

°

F.

Avoid these areas.

• If possible, remove snow immediately after it falls.

• Discharge snow downwind whenever possible.

• Slightly overlap each previous path.

• Set the skid shoes 1/4" below the shave plate for normal usage. Adjust it upward for hard-packed snow and downward when using on gravel or crushed rock.

10


The chute clean-out tool is conveniently fastened to the rear of the auger housing with a mounting clip. Never use your hand to clean a clogged chute or chute opening; use this clean-out tool instead.

• Release both the auger control lever and the traction/auger control lock lever.

• Stop the engine by removing the ignition key.

• Remove the chute clean-out tool from the clip which secures it to the rear of the auger housing.

See Figure 9.

• Use the shovel-shaped end of the clean-out tool to remove any snow and ice in the discharge chute.

• Re-fasten the clean-out tool to the mounting clip on the rear of the auger housing and restart engine.

• While standing in the operator’s position (behind the snow thrower), engage the auger clutch lever for a few seconds to clear any remaining snow or ice from the discharge chute before continuing to clear snow.


Clip

Figure 9

SECTION 5: MAKING ADJUSTMENTS

WARNING:

NEVER attempt to clean chute or make any adjustments while engine is running.

Shift Rod

• Remove the hairpin clip and flat washer from the shift handle under the handle panel. See Figure 10.

• Place shift lever in sixth (6) position or fastest forward speed.

• Push shift arm assembly down as far as it will go.

Shift Lever

Hairpin Clip

Flat washer

Upper Shift Rod

Lower Shift Rod

Shift Arm

Ferrule

Clutch Rod

Connector

Figure 10

• Rotate the ferrule up or down on the shift rod as necessary until the ferrule lines up with the upper hole in the shift lever. See Figure 10.

• Insert ferrule from the left side of the snow thrower into the upper hole.

• Reinstall the hairpin clip and the washer.

IMPORTANT:

Before operating the snow thrower, make sure the shift rod is adjusted according to instructions on page 6.

NOTE: For adjustment of auger control, skid shoe and

chute assembly, refer to Final Adjustments in Section 1.

Traction Control

If you are uncertain about correct adjustment, proceed as follows:

• Drain the gasoline out of your snow thrower’s engine, and place a piece of plastic film under the gas cap to avoid spillage.

• Tip the snow thrower forward, allowing it to rest on the auger housing.

• Remove the frame cover underneath the snow thrower by removing six self-tapping screws.

• With the traction control released, check if there is clearance between friction wheel and drive plate in all positions of the shift lever. See Figure 11.

• With the traction control lever engaged, check if the friction wheel solidly contacts the drive plate. See

Figure 11. If not, adjust as follows:

• Loosen the jam nut on the traction drive cable and thread the cable in or out as necessary.

• Retighten the jam nut to secure the cable when correct adjustment is reached.

• Reassemble the frame cover.

11

• If you placed plastic film under the gas cap earlier, remove it now.

Trigger Cables

Shift Arm

Drive Actuator

Bracket

Auger Actuator

Bracket

Hex Nut &

Cupped

Washer

Hex Gear Shaft

Rubber

Friction

Wheel

Drive Plate

Figure 11

Auger Control

Refer to instructions on page 6 to adjust the auger control. Make certain to check for correct adjustment as instructed before operating the snow thrower.

Chute Assembly

The distance snow is thrown can be adjusted by adjusting the angle of the chute assembly. Refer to page 8 for instructions.

The remote chute control cables have been preadjusted at the factory. Move the remote chute lever on the control panel back and forward to adjust angle of the chute assembly.

Skid Shoe

The space between the shave plate and the ground can be adjusted by raising or lowering the skid shoes.

For close snow removal, as when using on a smooth concrete or asphalt driveway, place the skid shoes in the low position. Use the middle or high position when the area to be cleared is uneven. When operating on gravel, always put skid shoes in the high position.

See Figure 12.

Adjust skid shoes as follows:

• Loosen, but do not remove, the three hex nuts which fasten the skid shoe to the auger housing.

• Raise or lower the skid shoe to desired position.

• Retighten the hex nuts loosened earlier.

• Repeat on the other side of the snow thrower.

Shave Plate

High

Low

Carriage Bolts

Skid

Shoes

Hex Nuts

Figure 12

NOTE: Make certain the bottom surface of skid shoe is

flat against the ground to avoid uneven wear

SECTION 6: MAINTAINING YOUR SNOW THROWER

WARNING:

Before lubricating, repairing, or inspecting, disengage all clutch levers and stop engine. Wait until all moving parts have come to a complete stop. Disconnect the spark plug wire and ground it against the engine to prevent unintended starting.

warranty, operator must maintain the snow thrower as instructed in this manual.

• Some adjustments will have to be made periodically to maintain your unit properly.

• Periodically check all fasteners and hardware to make sure these are tight.

General Recommendations

• Always observe safety rules when performing any maintenance.

• The warranty on this snow thrower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the

Lubrication

Drive and Shifting Mechanism

• At least once a season or after every 25 hours of operation, remove rear cover. Lubricate any chains, sprockets, gears, bearings, shafts, and the shifting

12

mechanism at least once a season. Use engine oil or a spray lubricant. Refer to Figure 11.

IMPORTANT:

Avoid spillage of oil on rubber friction wheel and aluminum drive plate.

Gear Shaft

• Lubricate the gear shaft with 6-in-1 grease (part number 737-0170) at least once a season, or after every 25 hours of operation.

Refer to Figure 11.

IMPORTANT:

Keep all grease and oil off the rubber friction wheel and drive plate.

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.

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.

Auger Shaft

• At least once a season, remove the shear bolts from the auger shaft and spray lubricant inside the shaft. See Figure 13.

Vent Plug

Shear Bolts

Lube Under Chute Base

Chute Crank Spirals

Figure 14

Auger Bearings and Shaft

• Every season lubricate the auger bearings and the bearings on the side of the frame with light oil. See to Figure 13.

• Use oil or spray lubricant into the bearings at the wheels at least once a season. Remove the wheels, one side at a time, and clean and coat axles with multi-purpose automotive grease.

• Lubricate the auger shaft at least once a season.

To do this:

• Remove the shear bolts on the auger shaft.

• Oil or spray lubricant inside shaft.

• Carefully spin the auger around by hand to disperse the lubricant.

• Reinstall the shear bolts.

Traction Control / Auger Control Lock

The cams on the ends of the control rods which interlock the traction drive and auger drive clutches must be lubricated at least once a season or every 25 hours of operation using a multi-purpose automotive grease. The cams can be accessed beneath the handle panel. See Figure 15.

Bearings

Figure 13

Engine

Refer to the engine manual for instructions.

Discharge Chute

The base of the discharge chute and the spirals on the chute crank should be lubricated at least every 25 hours of use. Apply the lubricant under the base of the chute and where the spirals contact the discharge chute. See Figure 14.

Handle Panel

Lube Cams Here

Control Rods

Figure 15

13

Friction Wheel Rubber

Follow the instructions below to check the condition of the friction wheel rubber every 25 hours of operation.

• Remove the six self-tapping screws from the frame cover underneath the snow thrower.

• Visually inspect the friction wheel rubber for excessive wear, cracks, or loose fit on the friction wheel drive hub.

• Also engage the traction control and check if the friction wheel is making contact with friction plate.

Refer to Figure 11. If it does not make contact, adjust the traction drive cable and recheck the friction wheel.

• Replace friction wheel rubber if necessary. Refer to instructions on page 16.

Drive Belts

Follow the instructions below to check the condition of the drive belts every 50 hours of operation.

• Remove the plastic belt cover on the front of the engine by removing the three self-tapping screws.

• Visually inspect for frayed, cracked, or excessively worn out belts.

• Replace belts as necessary as outlined in Service

Section on page 15.

Engine

Follow accompanying engine manual for all enginerelated maintenance issues.

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.

Augers

The augers are secured to the spiral 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. Refer to Figure 13.

If the augers do not turn, check if the bolts have sheared. Two replacement shear bolts and hex lock nuts have been provided with the snow thrower. Refer to Loose Parts in the Assembly Section.

IMPORTANT:

NEVER replace the auger shear bolts with standard hex bolts. 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. These should be checked periodically and replaced when necessary.

NOTE: The skid shoes on this machine have two wear

edges. When one side wears out, they can be rotated

180° to use the other edge.

Shear Bolts

Washer

Hex Nut

Carriage

Bolt

Shave

Plate

Figure 16

• Remove the six carriage bolts, belleville washers and hex nuts which attach two skid shoes to the snow thrower on two sides. See Figure 12.

• Reassemble new skid shoes with the hardware removed earlier (cupped side of belleville washer against the skid shoes). Make certain the skid shoes are adjusted to be level.

• To remove the shave plate, remove the carriage bolts, belleville washers and hex nuts which attach shave plate to the snow thrower housing.See

Figure 16.

• Reassemble the new shave plate, with heads of carriage bolts to the inside of the housing. Tighten securely.

14

Replacing Belts

• Disconnect the chute crank assembly at the discharge chute end by removing the hairpin clip and the two flat washers.

• Remove the plastic belt cover, located near the engine, by removing the three self-tapping screws and flat washers that secure it. See Figure 17.

Hairpin

Clip

Flat

Washers

Belt Cover

Bolts(3)

Belt Cover

Engine

Pulley

Auger Idler

Rod

Auger Control

Belt

Ferrule

Brake Bracket

Assembly

Z Fitting

Cable Roller

Guide

Support Tube Bolt

Shoulder Bolt

(do not remove)

Upper Bolt

(remove)

Figure 17

• Remove the large shoulder bolt and washer on the left hand side of the engine pulley. See Figure 17.

Auger Belt

• Remove the hairpin clip and flat washer from the ferrule in order to disconnect the auger idler rod from the brake bracket assembly. See Figure 17.

Engine Pulley

Figure 19

• Remove the upper bolts and lock washers which attach the auger housing assembly to the frame assembly using a 9/16” wrench. Refer to Figure 17.

• Separate auger housing from the frame by tilting the housing forward and pulling up the handles.

• Using a 1/2” wrench, remove the hex screw and belleville washer from the center of the pulley on the auger housing. Lift the brake bracket assembly out of the pulley groove and remove the pulley. See

Figure 20. Be careful not to lose the key.

• Remove and replace auger belt inside belt keepers.

• Reassemble pulley to auger housing with hex screw and belleville washer (cupped side toward the pulley). Make sure key is in place on shaft and brake puck is seated in the pulley groove.

• Reassemble belt cover and chute directional control.

Proper Adjustment: With the auger clutch lever in the disengaged position, the top surface of the new belt should be even with the outside diameter of the pulley.

• To adjust, disconnect ferrule from brake bracket assembly and thread ferrule in (towards idler) to increase tension on belt, and out to decrease tension.

NOTE: The brake puck must always be firmly seated in

the pulley groove when auger control is disengaged.

Brake Bracket Assembly

Auger Belt

Idler Pulley

Shoulder Bolt

Figure 18

• Slip the auger control belt (the front belt) off the engine pulley. See Figure 19.

• Pull the brake bracket assembly towards the cable guide roller and unhook the auger cable “Z” fitting.

Belt

Keepers

15

Auger

Pulley

Figure 20

Hex Screw,

Belleville

Washer

Drive Belt

• Unhook the extension spring from the belt cover plate. See Figure 21.

• Remove drive belt from the engine pulley and bottom drive pulley.

• Replace belt and reassemble in reverse order.

• Reassemble the two halves of the unit hooking the lower portion of the auger housing over the stationary shoulder bolts in the frame assembly.

Belt Cover

the right side of the hex shaft will fall and the sprocket should remain hanging lose in the chain.

See Figure 22.

Shift Arm Assembly

Shift Arm

Assembly

Pin

Sprocket

Sprocket

Spacer

Pin

Friction

Wheel

Drive Cover

Friction Wheel

Extension

Spring

Drive Belt

Figure 21

• Secure the two halves with the two bolts and lock washers removed earlier.

• Attach the “Z” fitting of the cable into the brake bracket assembly. Refer to Figure 19.

• Slip the auger control belt over engine pulley.

• Insert ferrule on auger idler rod into bracket assembly and secure with flat washer and cotter pin. Reassemble the large shoulder bolt and lock washer. Refer to Figure 19.

• Reassemble belt cover and chute crank.

Changing Friction Wheel Rubber

The rubber on the friction wheel is subject to wear and should be checked after the first 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, or place a piece of plastic under the gas cap.

• Tip the snow thrower up and forward, so that it rests on the housing.

• Remove six screws from the frame cover underneath the snow thrower.

• Remove the left wheel from the axle.

• Using a 7/8” wrench, hold the hex shaft and remove the hex bolts and cupped washer and bearing from left side of the frame. Refer to Figure 11.

• Holding the friction wheel assembly, slide the hex shaft out of the left side of the unit. The spacer on

Figure 22

• Lift the friction wheel assembly out between the axle shaft and the drive shaft assemblies.

• Remove four screws securing the friction wheel rubber between the friction wheel plates. See

Figure 23. Discard old rubber.

• Reassemble the new friction wheel rubber to the friction wheel assembly, tightening the four screws in rotation and with equal force. See Figure 23. It is important to assemble the rubber on the friction wheel symmetrically for proper functioning.

Plates

Screws

Hub

Bearing

Friction Wheel Rubber

Figure 23

• Insert the pin from the shift arm assembly into the friction wheel assembly and hold assembly in position. Refer to Figure 22.

• Slide the hex shaft through the left side of the housing and through the friction wheel assembly.

• Insert the hex shaft through the sprocket and the spacer. Make certain that the chain engages both the large and the small sprocket.

NOTE: If the sprocket fell from the snow thrower while

removing the hex shaft, place the sprocket on the hex shaft. Position the hex hub of the sprocket toward the friction wheel when sliding the sprocket on to the hex shaft. See Figure 24.

16

.

Assembly

Pin

Sprocket

Spacer

• Secure with the bell washer and hex bolt removed earlier.

• Secure the frame cover with six self-tapping screws. Put the snow thrower down to its normal operating position.

NOTE: If you placed plastic film under the gas cap, be

certain to remove it.

Hex

Shaft

Hex Hub of Sprocket

Friction

Wheel

Figure 24

Spacer

SECTION 8: OFF-SEASON STORAGE

WARNING:

Never store engine with fuel in tank indoors or in poorly ventilated areas, where fuel fumes may reach an open flame, spark or pilot light as on a furnace, water heater, clothes dryer or other gas appliance.

• If unit is to be stored over 30 days, prepare engine for storage as instructed in the engine manual.

• Remove all debris from the exterior of equipment.

• Follow lubrication recommendations on page 12.

• 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.

Safety & Decorative Labels: Part Number and Location

17

SECTION 9: TROUBLESHOOTING

Problem

Engine fails to start.

Engine runs erratic.

Loss of power.

Engine overheats.

Excessive vibration.

Unit fails to propel itself.

Unit fails to discharge snow.

Cause

1.

Fuel tank empty, or stale fuel.

2.

Blocked fuel line.

3.

Choke not in 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.

1.

Unit running on CHOKE.

2.

Blocked fuel line or stale fuel.

3.

Water or dirt in fuel system.

4.

Carburetor out of adjustment.

1.

Spark plug wire loose.

2.

Gas cap vent hole plugged.

3.

Exhaust port plugged.

1.

Carburetor not adjusted properly.

1.

Loose parts or damaged auger.

1.

Traction control cable in need of adjustment.

2.

Drive belt loose or damaged.

1.

Discharge chute clogged.

2.

Foreign object lodged in auger.

3.

Auger control cable in need of adjustment.

4.

Auger belt loose or damaged.

5.

Shear bolt(s) sheared.

Remedy

1.

Fill tank with fresh gasoline.

2.

Clean the fuel line.

3.

Move switch to 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.

1.

Move choke lever to OFF position.

2.

Clean fuel line and fill tank with clean, fresh gasoline.

3.

Drain fuel tank and carburetor. Refill with fresh fuel.

4.


1.

Connect and tighten spark plug wire.

2.

Remove ice and snow from gas cap. Be certain vent hole is clear.

3.


1.

Refer to the engine manual or have the carburetor adjusted by an authorized engine service dealer.

1.

Stop engine immediately and disconnect spark plug wire. Tighten all bolts and nuts. If vibration continues, have unit serviced by an authorized service dealer.

1.

Adjust traction control cable. Refer to

Adjustments.

2.

Replace drive belt.

1.

Stop engine immediately and disconnect spark plug wire. Clean discharge chute and inside of auger housing.

2.

Stop engine immediately and disconnect spark plug wire. Remove object from auger.

3.

Refer to Final Adjustments in Assembly

Section.

4.

Refer to Adjustments.

5.

Replace shear bolt(s).

NOTE: For repairs beyond minor adjustments listed above, contact the local dealer.

18

SECTION 10: PARTS LIST FOR MODEL 993I

6

33

30

34

39

29

22

25

23

12

36

27

37

22

32

22

35

38

34

39

26

20

24

28

31

4

15

6

19

10

16

6

21

30

33

6

3

17

18

10

12

14

2

1

4

8

13

6

11

7

Ref.

No.

29.

30.

31.

32.

25.

26.

27.

28.

21.

22.

23.

24.

17.

18.

19.

20.

33.

34.

35.

36.

37.

38.

39.

13.

14.

15.

16.

9.

10.

11.

12.

5.

6.

7.

8.

1.

2.

3.

4.

Part No.

746-0903

784-5594

784-5604

684-0102

710-0459A

710-0599

711-0653

712-0116

784-5682

714-0104

732-0145

732-0193

732-0746

735-0199A

736-0105

784-5681

710-0276

710-0458

710-0805

710-0895

710-3015

712-0429

712-3027

731-0846C

731-0851A

731-1313C

731-0903D

784-5680

736-0159

736-0231

736-0506

746-0902

736-0509

747-0877

748-0362

748-0363

784-5619A

784-5679

714-0507

Description

Carriage Screw

Carriage Bolt 5/16-18 x 1.75”

Hex Bolt 5/16-18 x 1.5”

Hi-Lo Screw 1/4-14 x .75”

Hex Screw 1/4-20 x .75”

Hex Lock Nut

Hex Flange Lock Nut

Upper Chute

Chute Flange Keeper

Cable Guide: Chute Tilt

Lower Chute

Handle Suppt. Bracket 5/8 RH

5/16 Washer

Flat Washer

Special Washer

Chute Control Cable

Chute Cable w/Clip

Cable Bracket

Chute Tilt Handle

Handle Panel Assembly w/ Tilt

Hex Bolt 3/8-24 x 1.5”

TT Screw 1/4-20 x 0.5”

Clevis Pin

Jam Nut

Handle Suppt. Bracket 3/8 RH

Cotter Pin

Spring

Spring

Torsion Spring

Rubber Bumper

Bell Washer

Handle Suppt. Bracket 3/8 LH

Special Washer

Cam Rod

Cam: Handle Lock

Pawl: Handle Lock

Shift Handle

Handle Suppt. Bracket 5/8 LH

Hairpin Clip

9

5

19

Model 993I

36

37

39

6

32

A

35

33

A

9

22 11

42

4

34

19

5

7

15

29

19

23

17

1

40

21 13

15

23

10

27

13

21

31

15

1

21

26

19

30

5

19

4

34

8

7

11

22

38

44

41

24

3

A

28

43

A

9

35

32

33

18

6

16

2

14

25

12

15

20

20

Model 993I

Ref.

No.

Part No.

1.

646-0012

2.

684-0053B

3.

705-5266

4.

710-1879

5.

710-1878

6.

710-0458

7.

710-0572

8.

710-0891

9.

710-3015

10.

711-0677

11.

712-0287

12.

712-0429

13.

712-3010

14.

714-0101

15.

714-0104

16.

720-0201A

17.

720-0284

18.

726-0100

19.

736-0105

20.

736-0185

21.

736-0242

22.

736-0270

23.

736-0275

24.

741-0475

25.

747-0624

26.

747-0983

27.

747-0997

28.

749-0989A

29.

749-0990A

30.

749-0991

31.

750-0963

32.

710-1625

33.

712-0127

34.

725-0157

35.

746-0950

36.

625-0007

725-1658

725-1672

37.

705-5218

38.

705-5219

39.

710-1003

40.

712-0271

41.

712-0429

42.

720-0232

43.

731-1873A

44.

736-0159

Part Description

Cable Assembly: Auger/Drive

Chute Crank Assembly

Chute Crank Bracket

Hex Screw 3/8-16 x .880”

Hex Screw3/8-16 x 1.75”



Shear Bolt 5/16-18 x 1.75”

Hex Screw 1/4-20 x .75”

Ferrule

Hex Nut 1/4-20

Hex Lock Nut

Hex Nut

Hairpin Clip

Hairpin Clip

Chute Crank Knob

Knob

Push Cap

Bell Washer

Flat Washer

Beleville Washer

Bell Washer

Flat Washer

Plastic Bushing

Chute Crank

Lower Shift Rod

Upper Shift Rod

Upper Handle LH

Upper Handle RH

Lower Handle

Clutch Rod Connector

Oval C-Sunk Screw

Flat Weld Nut

Cable Tie

Trigger Control

Light Assembly

Halogen Lamp

Lens Assembly

Handle Engagement RH

Handle Engagement LH

Special B Screw

Hex Sems Nut

Hex Lock Nut

Shift Knob

Handle Panel

5/16 Washer

21

Model 993I

57

58

8

42

7

40

25

25

59

59

25

47

43

31

16

21

14

1

21

14

5

55

45

38

36

4

25

44

2

28

15

20

50

13

60

6

24

30

27

13

17

29

26

46

18

34

10

23

39

25

3

14

49

54

9

34 26 32

52

53

25

14

13

51

5

48

56

33

41

5

25

14

11

35

12

19

13

37

13

29

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

22

Model 993I

Ref.

No.

21.

23.

24.

25.

17.

18.

19.

20.

26.

27.

28.

30.

31.

13.

14.

15.

16.

9.

10.

11.

12.

5.

6.

7.

8.

1.

2.

3.

4.

Part No.

714-0135

715-0118

731-1696A

732-0858

736-0119

736-0169

736-0174

736-0242

736-0250

736-0271

736-3008

738-0281

741-04024

05244A

618-0281A

684-0090A

710-0371

710-0451

710-0459A

710-0528

710-0726

710-0891

711-0640

711-0677

712-0116

712-3004A

712-3010

714-0104

714-0126


Bearing Housing

Bracket Assembly: Auger Break

Impeller Assembly: 16”

Hex Lock Bolt 5/16-18 x .875”

Carriage Bolt 5/16-18 x .750”

Hex Screw, Special 3/8-24 x 1.5”

Hex Screw 5/16-18 x 1.25”

AB Screw 5/16-12 x .75”

Shear Bolt 5/16-18 x 1.75”

Stud

Ferrule

Jam Nut 3/8-24

Flange Lock Nut 5/16-18

Hex Nut 5/16-18

Hairpin Clip

Key

Key

Spiral Pin

Chute Adapter

Extension Spring

Lock Washer

Lock Washer

Wave Washer

Beleville Washer

Flat Washer

Spring Washer

Flat Washer

Shoulder Screw

Self-Aligning Bearing

Ref.

No.

52.

53.

54.

55.

48.

49.

50.

51.

56.

57.

58.

59.

60.

44.

45.

46.

47.

40.

41.

42.

43.

36.

37.

38.

39.

32.

33.

34.

35.

Part No.

784-5697

737-3000

738-0491

736-0105

05848B

784-5714A

710-0389

710-3168

712-0798

731-2635

731-2643

710-1260A

712-0717

741-0192

741-0475

741-0494

747-0980

754-0222A

756-0178

756-0243

784-0385A

784-5076

784-5123

784-5710

784-5711

618-0257

705-5210A

705-5211A

684-0093B


Flange Bearing w/ Flats

Plastic Bushing

Flange Bushing

Idler Rod: Auger

V-Belt

Flat Idler

Pulley

Idler Bracket: Auger

Support Bracket

Chute Crank Bracket

Support Plate

Chute Bracket

Gear Assembly

Spiral Assembly RH

Spiral Assembly LH

Auger Housing Assembly

Slide Shoe

Lube Fitting

Spiral Axle

Bell Washer

Bearing Housing

Shave Plate

Carriage Screw

Carriage Bolt

Hex Nut 3/8-16

Mount, Chute Clean-out Tool

Chute Clean-Out Tool

Screw, 5/16-18 x .75

Insert Nut, 3/8-16

23

Model 993I

17

16

10

80

64

17

65

83

44

32

1

38

52

60

14

77

49

26

50

63

62

13

48

18

15

67

41

78

48

31

29

6

64

30 42

47

34

13

76

17

14

68

8

46

73

17

17

84

4

3

37

43

36

2

33

36

25

46

7

5

54

23

22 21

34

40

66

22

51

12

72

62

13

55

58

21

35

69

27

43

68

75

20

57

39

19

79

48

31

62

29

53

47

56

48

32

44

11

60

52

38

83

59

74

86

85

51

30

27

18

31

15

5

1

61

13

84

63

26

50

14

77

87

49

62

32

44

17

81

45

71

28

82

24

Model 993I

Ref.

No.

Part No.

1.

05244A

2.

618-0279

3.

618-0280

4.

618-0282D

5.

618-0296A

6.

684-0117

7.

684-0118

8.

684-0119

9.

684-0122

10.

684-0161

11.

684-0162

12.

710-0195

13.

710-0538

14.

710-0599

15.

710-0726

16.

710-0788

17.

710-1652

18.

710-1879

19.

710-3001

20.

710-3008

21.

710-3103

22.

710-3180

23.

711-1191

24.

711-1193

25.

711-1194

26.

712-0116

27.

712-0138

28.

712-0221

29.

712-0429

30.

712-0717

31.

712-0798

32.

712-3010

33.

713-0284

34.

713-0286

35.

713-0413

36.

714-0101

37.

714-0104

38.

714-0115

39.

714-0388

40.

715-0249

41.

717-0302

42.

732-0121

43.

732-0209

44.

736-0119


Bearing Housing

Dogg Assembly LH

Dogg Assembly RH

Shift Assembly

Friction Wheel Assembly*

Shift Rod Assembly

Actr. Bracket Assembly: Auger

Actr. Bracket Assembly: Drive

Sprocket Assembly 32T

Shift Arm Assembly

Support Bracket Assembly

Hex Screw 1/4-28 x .625”

Hex Screw 5/16-18 x .625”

TT Screw 1/4-20 x 0.5”

AB Screw 5/16-12 x 0.75”

TT Screw 1/4-20 x 1.0”

TT Screw 1/4-20 x .625”

Hex Screw 3/8-16 x .880”

Hex Screw 3/8-16 x .880”

Hex Screw 5/16-18 x 0.75”

Hex Screw 5/16-18 x 2.0”

Hex Screw 5/16-18 x 1.75”

Drive Shaft

Actr. Shaft

Actr. Shaft: Drive

Jam Nut

Hex Nut 1/4-28

Jam Nut

Lock Nut

Nut Insert

Hex Nut 3/8-16

Hex Nut 5/16-18

Chain: Endless

Chain

Sprocket

Hairpin Clip

Hairpin Clip

Cotter Pin

Key

Spring Pin

Drive Plate

Extension Spring

Extension Spring

Lock Washer 5/16

* Items 17, 85, 86, 87, and 88 are part of this assembly.

Ref.

No.

Part No.

45.

736-0158

46.

736-0160

47.

736-0163

48.

736-0217

49.

736-0242

50.

736-0300

51.

736-0329

52.

736-0623

53.

737-0318

54.

737-04027

55.

737-3000

56.

738-0143

57.

738-0279

58.

738-0924

59.

741-0163A

60.

741-0225

61.

741-04025

62.

741-0563

63.

741-0747

64.

741-0748

65.

746-0949A

66.

746-0951

67.

747-0973

68.

750-0903

69.

750-0997

70.

750-1302A

71.

756-0344

72.

756-0625

73.

784-0379

74.

784-0380

75.

784-0384

76.

784-0403

77.

784-0404

78.

784-0406

79.

784-0407

80.

790-00016

81.

714-0151A

82.

734-1593

83.

738-1164A

84.

784-5617A

85.

735-0243B

86.

718-0301A

87.

618-0063A


Lock Washer 5/8

Flat Washer .53 x .93 x .050

Flat Washer 1.030 x 1.620 x .030

Lock Washer

Bell Washer

Flat Washer .406 x .875 x .059

Lock Washer 1/4

Flat Washer .64 x 1.24 x .06

Grease

Lubricant

Lube Fitting: 3/16 Drive

Shoulder Screw

Spindle: drive Plate

C Screw 1/4-28 x .375”

Bearing Housing

Hex Flange Bearing

Bearing: Self-Aligning

Ball Bearing

Ball Bearing

Flange Bushing

Steering Cable

Idler Cable: Auger

Clutch Rod: Drive

Split Spacer

Spacer

Spacer

Drive Pulley

Cable Roller

Frame Cover: Upper

Frame Cover: Lower

Auger Cable Bracket Guide

Shift Bracket

Retainer Bracket: Bearing

Support Bracket: Frame

Support Bracket: Axle Bearing

Frame

Klik Pin

Wheel

Axle: Wheel

Friction Plate

Friction Wheel Rubber

Friction Wheel Hub

Friction Wheel Bearing

25

Model 993I

6

15

10

15

6

14

3

13

1

21

18

14

7

22

16 12

8

9

4

19

17

13

11

2

3

20

5

23

24

25

26

26

Model 993I

Ref.

No.

Part No.

1.

07386

2.

684-0123A

3.

710-0191

4.

710-0237

5.

710-0502A

6.

710-0607

7.

710-1245

8.

712-0116

9.

714-0118

10.

731-2531

11.

732-0303

12.

736-0159

13.

736-0217

14.

736-0242

15.

736-0264

16.

737-3007

17.

738-0215A

18.

748-0234

19.

754-0131

20.

756-0240

21.

756-0241B

22.

784-5726

23.

712-0324

24.

732-0705

25.

736-0173

26.

629-0071

Description

Washer

Belt Cover Bracket Assembly

Hex Screw 3/8-24 x 1.25”

Hex Screw 5/16-24 x .625”

TT Sems Screw

TT Screw 5/16-18 x 0.5”

Hex Lock Screw 5/16-24 x .875”

Jam Nut

Key

Belt Cover

Extension Spring

5/16 Washer

Lock Washer

Beleville Washer

Flat Washer

Grease

Shoulder Screw

Shoulder Spacer

V-Belt

Flat Idler

Double Pulley

Idler Bracket

Hex Lock Nut: 1/4-20

Cable Guide

Flat Washer

Extension Cord: 110V, 3-prong

27

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.

MTD LLC warrants this product against defects 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 accessory or attachment not approved by MTD LLC for use with the product(s) covered by this manual will void your warranty as to any resulting damage.

Normal wear parts or components thereof are subject to separate terms as follows: All normal wear parts or component failures will be covered on the product for a period of 90 days regardless of cause. After 90 days, but within the two year period, normal wear part failures will be covered

ONLY IF caused by defects in materials or workmanship of

OTHER component parts. Normal wear parts and components include, but are not limited to: 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 on to our Web site at www.mtdproducts.com.

This limited warranty does not provide coverage in the following cases: a.

b.

c.

The engine or component parts thereof. These items carry a separate manufacturer’s warranty. Refer to applicable manufacturer’s warranty for terms and conditions.

Log splitter pumps, valves, and cylinders have a sepa rate one year warranty.

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.

d.

e.

f.

g.

MTD LLC does not extend any warranty for products sold or exported outside of the United States, its possesions and territories, except those sold through

MTD LLC’s authorized channels of export distribution.

Parts that are not genuine MTD parts are not covered by this warranty.

Service completed by someone other than an authorized service dealer is not covered by this warranty.

Transportation charges and service calls are not covered.

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 LLC. 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

LLC 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.

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 shall not extend to anyone other than the original purchaser or to the person for whom it was purchased as a gift.

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.

IMPORTANT: Owner must present Original Proof of

Purchase to obtain warranty coverage.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: 1-800-800-7310

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