Yard-Man 31AE633E401, 31AE663H401 Operator's Manual

Operator’s Manual

Snow T hrower

Models 31AE633E401 31AE663H401

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

Warning:

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 368022 Cleveland, Ohio 44136-9722.

PRINTED IN U.S.A.

ECO No. 1481

This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722

FORM NO.

770-10020B.fm

(6/2000)

TABLE OF CONTENTS

Content Page

Important Safe Operation Practices...................................................................3

Assembling Your Snow Thrower .......................................................................5

Know Your Snow Thrower.................................................................................9

Operating Your Snow Thrower ..........................................................................10

Making Adjustments ..........................................................................................12

Maintaining Your Snow Thrower........................................................................13

Service ..............................................................................................................14

Troubleshooting.................................................................................................17

Parts List............................................................................................................18

FINDING MODEL NUMBER

This Operator’s Manual is an important part of your new Snow Thrower. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, 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 locat e the model numb er by l ookin g at the l ower fr ame co ver in the rear of your snow thrower. 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)

MTD PRODUCTS INC

CLEVELAND, OHIO 44136

Copy the model number here:

Copy the serial number here:

CALLING CUSTOMER SUPPORT

If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this unit, please call the Customer Support Department.

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 .

SECTION 1: IMPORTANT SAFE OPERATION PRACTICES

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, a nd follow all in struction s on the machine and in the manual(s ) before a ttempting to assemble and o perate. Keep this ma nual in a safe pl ace for future and regular re ference a nd for orde ring replacement parts.

2. Be familiar with all controls and their prope r operation. Know how to stop the mach ine and d isengage them quickly.

3. Never allow childre n under 14 y ears old to operate this machine. Children 14 years old and over should rea d and understand the op eration in struction s and sa fety rules i n this manual and should be trained and sup ervised b y a parent.

4. Never allow adults to operate this machine without proper instruction.

5. Thrown objects can cause seriou s personal injury . Plan your snow throwin g pattern to avoid di scharge of mat erial toward roads, bystanders and the like.

6. Keep bystanders, hel pers, pets and chi ldren at l east 75 feet from the machin e while it is in operatio n. Stop machine if anyo ne enters the area.

7. Exercise caution to avoid s lipping o r falli ng, espe cially when operating in reverse.

Preparation

1. Thoroughly inspect the area wh ere the eq uipment i s to be used. Remove all door mat s, newspa pers, sle ds, boards, wires and o ther foreig n object s which c ould be tripped over or throw n by the auger/imp eller.

2. Always wear safet y glasses or eye s hields d uring operation and while performing an adjustment or repair to protect your eyes. T hrown ob jects whi ch ricochet can cause serious inj ury to the eyes.

3. Do not operate wit hout wearing adequate winter outer garments. Do not wear jewelry, long scarves or other loose clothing which cou ld becom e entang led in m oving parts. Wear footwear w hich wi ll improve footing on slippery surfaces.

4. Use a grounded three wire ex tension cord and receptac le for all units with electric start engi nes.

5. Adjust collector housing height to clear gravel or crushed rock surfaces.

6. Disengage all cl utch levers before st arting the engin e.

7. Never attempt to m ake any adjustme nts while engine i s running, except where spec ifically recomm ended in the operator’s manual.

8. Let engine and m achine adju st to outd oor tem perature before starting to clear snow.

9. To avoid personal injury or pro perty damage use extre me care in handling gasolin e. Gasol ine is e xtremely flammable and the v apors are explosiv e. Serious personal injury c an occur w hen gas oline is spilled o n yourself or your c lothes which c an ignit e. Wash y our skin and change clot hes immedi ately.

a. Use only an approved gasoline container. b. Extinguish all cigarettes, cig ars, pipes and other

sources of ignition. c. Never fuel machine indoo rs. d. Never remove gas cap or add fue l whil e the

engine is hot or running. e. Allow engine to cool at leas t two minu tes before

refueling. f. Never over fill fuel tank. Fil l tank to no more tha n

½ inch below bottom of fill er neck to provide space

for fuel expansi on. g. Replace gasoli ne cap an d tighten secu rely. h. If gasoline is sp illed, wip e it off th e engine and

equipment. Move machine to another area . Wait 5

minutes before start ing the e ngine. i. Never store the machine or fuel containe r inside

where there is an o pen flam e, spark or pilot l ight

(e.g. furnace, water heater, space heate r, clothes

dryer etc.). j. Allow machine to cool at least 5 mi nutes bef ore

storing.

Operation

1. Do not put hands o r feet near rotating p arts, in the a uger/ impeller housing o r disc harge chu te. Cont act wit h the rotating parts can am putate ha nds and feet.

2. The auger/impelle r clutch lev er is a safety de vice. Nev er bypass its operati on. Doing so, makes the ma chine unsafe and may cause p ersonal i njury.

3. The clutch leve rs must o perate easily in both d irections and automatical ly return to the disengaged pos ition when released.

4. Never operate with a miss ing or da maged di scharge

chute. Keep all safe ty devic es in pl ace and working.

5. Never run an engine indoors or in a poorly vent ilated area. Engine exhaust contains carbon monoxide , an odorless and dea dly gas .

6. Do not operate mac hine while under the influenc e of alcohol or drugs.

7. Muffler and engine be come hot and c an cause a burn. D o not touch.

8. Exercise extreme ca ution when operating on or cro ssing gravel surfaces. Stay alert for hidden hazards or traffic.

9. Exercise caution w hen changi ng directi on and w hile operating on slop es.

10. Plan your snow t hrowing pat tern to av oid disc harge towards windows, wa lls, cars e tc. To avoid prope rty damage or personal injury caus ed by a ricochet.

11. Never direct disc harge at c hildren, b ystander s and pet s or allow anyone in front of t he machi ne.

12. Do not overload machine capa city by attemptin g to clear snow at too fast of a rate.

13. Never operate this machin e without good visib ility or light. Always be sure of your footi ng and k eep a firm hold on the handles. Walk, n ever run.

14. Disengage power to t he aug er/impeller w hen transporting or not in use.

15. Never operate mach ine at hi gh transp ort speeds on slippery surfaces. Look down and b ehind an d use ca re when in reverse.

16. If the machine shoul d start to vibrate abn ormally, stop the engine, disconnect the spark plug an d grou nd it agai nst the engine. Inspect thoroughly for dam age. Repair any damage before starting and ope rating.

17. Disengage all cl utch lev ers and st op engin e before y ou leave the operating position (be hind the handles). Wai t until the auger/im peller come s to a complete stop befo re unclogging the d ischarge chute, m aking an y adjustments, or inspecti ons.

18. Never put your hand in the d ischarge or colle ctor openings. Always use a cl earing to ol to unc log the discharge opening.

19. Use only attach ments a nd acce ssories approved by the manufacturer (e.g. wheel weigh ts, tire c hains, cabs etc.) .

20. If situations occur which are not covered in this manua l, use care and good judgment. Cont act your dealer or telephone 1-800-800-73 10 for assistance and the name of your nearest s ervicing dealer.

Maintenance And Storage

1. Never tamper with safety devices. Check their proper operation regularly.

2. Disengage all cl utch lev ers and stop engi ne. Wait u ntil the auger/impelle r come to a complet e stop. D isconn ect the spark plug wi re and grou nd again st the en gine to prevent unintended starting before cl eaning, repairi ng, or inspecting.

3. Check bolts, and sc rews for pro per tig htness at frequent intervals to keep t he ma chine in safe worki ng condi tion. Also, visually inspe ct mach ine for an y damag e.

4. Do not change the engi ne governor settin g or over-speed the engine. The g overnor c ontrols the m aximum s afe operating speed o f the eng ine.

5. Snow thrower shave plates an d skid shoes are subj ect to wear and damage. F or your s afety protecti on, freque ntly check all compon ents and replace with origin al equipment manufac turer’s (O .E.M.) parts only. “Use of parts which do not m eet the ori ginal eq uipment specifications may lea d to imp roper perfor mance an d compromise safety!”

6. Check clutch co ntrols period ically to verify they engage and disengage prope rly and adjust, if ne cessary. Refer to the adjustment s ection i n this op erator’s man ual for instructions.

7. Maintain or replace safety and instruction labels, as necessary.

8. Observe proper disposal l aws and regulations for ga s, oil, etc. to protect the environmen t.

9. Prior to storing, run machine a few minutes to clear snow from machine an d prevent freeze up of auger/i mpeller.

10. Never store the machine or fuel c ontainer i nside whe re there is an open flame, spark or pilot light such as a wate r heater, furnace ,cloth es dryer etc .

11. Always refer to the operator’s ma nual for p roper instructions on off-season storage.

Your Responsibility:

Restrict the use of this p ower ma chine to persons wh o read, understand and fo llow the w arnings and ins tructions in this manual and on t he mach ine. The s afety la bels ar e given below for your refer ence.

SECTION 2: ASSEMBLING YOUR SNOW THROWER

Unpacking

• Remove screws from the top sides and ends of the shipping crate.

• Set panel aside to avoid tire punctures or personal injury.

• Remove and discard plastic bag that covers unit.

• Roll unit out of crate.

• Check crate thoroughly for loose parts before discarding.

Loose Parts

• The snow throw er is ship ped wi th fo llowi ng lo ose parts in the carton. See Figure 1 for illustration, description of item and part number. Please remove all loose parts from the carton before discarding it.

Shear Bolts (710-0890A)

Hex Lock Nuts (712-0429)

Figure 1

• Please note that these are replacement hardware and not meant for initial assembly of the equipment. If the snow thrower hits a foreign object or ice jam, the bolts, securing the auger shaft, may shear. Use these two shea r bolts and nuts as repl aceme nt then. Store these in a safe place until needed.

NOTE: On model 633E, remove the lower wing nut and hardware from the right side of the handle only. The wing nut for the left side is in place on the chute directional control.

Raise handle this way

Remove these hardware

Figure 2

• One end of the chute directional control may be attached to the lower handle with cable ties for shipping purposes. If so, cut the cable ties and free the loose end of the chute directional control.

• Raise the upper handle assembly in the direction shown in Figure 2. Make sure that the upper handle locks into position over the lower handle.

Carriage Bolt

Tighten these

wing nuts

Upper Handle

IMPORT ANT :

standard hex bolts. Any damage to the auger gearbox or other components from standard hex bolts will not be covered by your snow thrower’s warranty.

NEVER replace the auger shear bolts with

Assembling Handle

NOTE: Reference to the le ft or right side of the sno w thrower in this manual is obser ved from the operator’s position.

IMPORT ANT :

later on in this section before operating your snow thrower. Failure to follow the instructions may cause damage to the snowthrower.

• Remove the lower plastic wing nut, cupped washer and carriage bolt from each side of the lower handle. See Figure 2.

Make any final adjustments as instructed

Wing Nut

Cupped

Washer

Lower Handle

Figure 3

• Look at low er rear of snow throw er frame t o be sure all cables are aligned with cable roller guides.

• 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 3.

NOTE: On model 633E, attach the wing nut, cupped washer and carriage bolt in the l ower hole on the right side only. The hardware in the left lower hole will be attached later.

• Tighten th e two win g nuts alre ady in plac e on the upper holes and secure the handles firmly. See Figure 3.

• Slide the shift rod connector down over the end of the lower shift rod. See Figure 4. Tap the connector until it locks on the lower shift rod.

NOTE: If the conn ector is not prop erly assembled , the shift rod will pivot and y ou will not be able to change direction or speed of the snow thrower.

• Unwrap the headlight wire which is attached to the headlight beneath the handle panel. Wind the headlight wire around the right side of the lower handle until excess slack is removed. See Figure 6.

• Plug the wire from the headlight into the alternator lead coming from the right side of the engine, underneath the fuel tank. See Figure 6 inset.

Lower Handle

Alternator Lead

Lamp

Wire

Figure 6

Attaching Chute Dir ectional Contro l

Connector

Lower

Shift Rod

Note: Cut-out view of lower handle shown for clarity.

Upper Shift Rod

Figure 4

• 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 5.

Cable Guide

Model E633E

• Remove the wing nut and cupped washer from the eyebolt on the chute directional control. Leave the hex nut in place on the eyebolt (the nut must be threaded at least halfway onto the eyebolt).

• Insert the eyebolt through the lower hole on the left side of handle. Secure with cupped washer (cupped side against the handle panel) and wing nut. See Figure 7. Do not tighten at this time.

Wing

Nut

Cupped

Washer

Eye Bolt

Figure 5

Figure 7

• Adjust the chute directional control support bracket so that the spiral on the chute directional control fully engages the teeth on the chute assembly.

• Tighten wing nut with eye bolt to secure chute directional control.

If the spiral on the chute directional control cannnot be adjusted properly, follow the steps below:

• Loosen the two hex nuts which secure the chute directional control support bracket (see Figure 8) to the snow thrower housing, beside the discharge chute.

Carriage Bolts Hex Lock Nuts

Chute Directional

Control

Support Bracket

Figure 8

• Remove the hairpin clip and one flat washer from the lower end of the chute directional control. Leave the other flat washer in place on the end of the rod.

of the chute directional control, and insert the hairpin clip again. See Figure 10.

Hairpin Clip

Chute Directional Control

Figure 10

Final Adjustments

Hairpin Clip

Flat Washer

Lower Chute Crank Bracket

Plastic Bushing

Chute Crank

Flat Washer

Figure 9

• Insert the lower end of the chute directional control into the hole in the plastic bushing in the chute directional control support bracket. See Figure 8.

• Place the other flat washer onto the end of the chute directional control, and secure with hairpin clip. See Figure 9.

• Tighten the nuts on the chute directional control support bracke t securely.

• Adjust the eyebolt on the chute directional control so the chute directional control does not touch the engine.

• Move the hex nut against the handle (if necessary).

• Tighten wing nut with eye bolt to secure chute directional control.

Model 663H

For packaging purposes, the two-piece chute directional control was attached to the snow thrower on the two ends, but was kept loose at the middle. Assemble as follows:

• Remove the hairpi n clip from the chute d irec tional

control. Align holes on the upper and lower pieces

Chute Directional Control Support Bracket

To adjust the chute directional control support bracket, refer to Figure 8 and accompanying instructions.

Traction Control and Shift Lever

To check the adjustment of the traction control and shift lever, proceed as follows:

• Move the shift lever into sixth (6) position.

• With traction control released, gently push the snow thrower forward, then pull it back. The machine should move freely.

• Engage traction control, and try to move the machine both forward and back. You should experience resistance.

• Move the shift lever into the fast reverse (R2) position and repeat the previous two steps.

If you experienced resistance either when repositioning the shift lever from 6 to R2 or when attempting to move the machine with the traction control released, you should NOT operate the snow thrower before adjusting the traction control. To adjust, proceed as follows:

• Loosen the jam nut on the traction control cable and UNTHREAD the cable one full turn.

• Recheck a djust ment .

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

NOTE: For more details, refer to Traction Control Adjustment on page 12.

Auger Control

Check the adjustment of the auger control as follows:

• Push down on the auger control until the small rubber bumper contacts the upper handle. There should be slack in the auger control cable.

• Release the auger control. The cable should be straight. Make certain you can depress the auger control against the left handle completely.

• If adjustment is necessary, proceed as follows:

• Loosen the jam nut and thread the cable in (for less slack) or out (for more slack) as necessary. See Figure 11.

“Z” End

• Raise or lower the skid shoe to desired position.

NOTE: Make certain the entire b ottom surface of skid shoe is against the ground to avoid uneven wear on the skid shoes.

• Retighten the hex nuts loosened earlier.

• Repeat on the other side of the snow thrower.

Jam Nut

Auger Control Cable

Figure 11

• Recheck adjustment; readjust as necessary and tighten the jam nut.

Skid Shoe

The space between the shave plate and the ground can be adjusted by repositioning the skid shoes found on either side of the snow throwers auger housing. For close snow removal, place skid shoes in the low position. Use middle or high position when area to be cleared is uneven. See Figure 12. When operating on gravel, always put skid shoes in the high position.

Adjust skid shoes as follows:

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

Skid

Shoes

Hex Nuts

Figure 12

Tire Pressure (Pneumatic Tires)

The tires are overinflated for shipping purposes.

• Check tire pressure. Maintain pressure between 15 to 20 psi. Refer to tire sidewalls for recommended tire pressure.

NOTE: If the tire pressure is not equal in both 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 main tained at all times. Exc essive pressure (over 30 psi) when seating beads may cause tire/rim assembly to burst with force sufficient to cause serious injury.

SECTION 3: KNOW YOUR SNOW THROWER

WARNING: Be famili ar with all the cont rols and their proper operat ion. Know how to sto p the machine

and disengage them quickly.

Traction Drive / Auger

Control Lock

Gas T ank

Discharge Chute

Auger

Skid Shoe

Shift Lever

Chute Tilt Control

Chute Directional Control

Choke

Ignition Key

Auger Drive Cl utch

Throttle Control

Primer

Rope Starter Handle

Closed

Open

Metal Loop

Rubber

Boot

Figure 13

Traction Control

The traction control is located on the right handle. Squeeze the traction control to engage the wheel drive. Release to stop.

Auger Control Lock

The traction control lever also locks the auger control so you can turn the chute directional control without interrupting snow throwing. If the auger control lock is engaged along with the traction control, you can release the auger drive clutch on the left handle and still keep the augers engaged. When the auger control lock is released, you can release the traction control to stop both the augers and the wheel drive.

IMPORT ANT :

Always release traction control before

changing speeds.

Auger Drive

The auger drive clutch is located on the left handle. Squeeze the clutch grip to engage the augers. Release

to stop the snow throwing action. (Traction drive clutch must also be rel eased .)

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. Always release traction control before changing speeds.

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

Reverse: Your snow thrower has two reverse (R) speeds. R1 is the slower, while R2 is faster.

Chute Directional Control

The chute directional control is located on left side of the snow thrower.To change the direction in which snow is thrown, turn chute directional control as follows:

• Crank clockwise to discharge to the left.

• Crank counterclockwise to discharge to the right.

Chute Tilt Control

The distance snow is thrown can be adjusted by adjusting the angle of the chute assembly. Move the chute tilt control forward to decrease the distance, and towards the rear to increase the distance.

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.

Fuel Shut-off Valve (If equipped)

If your snow thrower is equipped with a fuel shut-off valve, locate it under the fuel tank. This valve controls fuel flow from the tank. Always make certain it is in the open (vertical) position before attempting to start the engine. See Figure 13.

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.

Skid Shoe

The position of the skid shoe is determined by the condition of the ground from where snow has to be removed. Refer to page 8 for details.

SECTION 4: OPERATING YOUR SNOW THROWER

Before Starting

WARNING: Read, understand, and follow

all instructions and warnings on the machine and in this manual before operating.

• The spark plug wire was disconnected for safety. Attach spark plug wire to spark plug before starting.

Gas and Oil Fill-Up

• Check oil and gasoline level and add if necessary. Follow related instructions in the seperate engine manual packed with your snow thrower.

WARNING: Use extreme care when

handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Never fuel the machine indoors or while the engine is hot or running. Extinguish cigarettes, cigars, pipes and other sources of ignition.

To St art Engine

• Make certain the fuel cut-off valve, if your snow thrower is so equipped, is in OPEN position.

• 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. Make sure it snaps into place.

Do not turn key

NOTE: Engine will not start unless ignition key is

inserted i nto ig nitio n slot in carb uretor cover .

Electric Starter

WARNING: The electric starter is equipped

with a grounded three-wire power cord and plug, and is designe d 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.

• 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 thre e-wire grounded system, do not use this electric starter

under any condi tions.

• 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 electr ic start er.

• If you have a grounded three-prong r eceptacle, proceed as follows.

• Rotate choke knob to OFF position.

• Connect power cord to switch box on engine. Plug

the other end of power cord into a three-prong 120volt, grounded, AC receptacle.

• Push starter button 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.

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 for cold engine start.

• If engine is warm, push primer button only once.

NOTE: Always cover ve nt hole in primer button when pushing. Additional prim ing may be necessary for firs t start if temperature is below 15 degrees Fahrenheit.

• 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.

• As engine warms up and begins to operate evenly, rotate choke knob slowly to OFF position. If engine falters, return to FULL choke, then slowly move to OFF position.

To Stop Engine

• To stop engine, remove the ignition key. Do not turn key. Disconnect the spark plug wire from the spark plug to prevent accidental starting while equipment is unattended.

To help prevent possible freeze-up of starter, proceed as follows:

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

• Electric Star ter: 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.

• 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. Leave throttle control lever in the STOP or OFF position. Leave choke control in the FULL choke position.

• Remove ignition key and disconnect spark plug wire. Do not turn key.

IMPORT ANT :

place. Engine will not start without the ignition key.

Do not lose ignition key. Keep it in a safe

To En gage Drive

• With the engine running near top speed, move shift lever into one of the six forward positions or two reverse positions. Select a speed appropriate for the snow condi tions that exist.

NOTE: Use the slower speeds until you are familiar with the operation of the snow thrower.

• Squeeze the traction control against the right handle and the snow thrower will move. Release it and the drive motion will stop.

IMPORT ANT :

releasing the traction control. Doing so will cause premature wear to drive system’s friction wheel rubber.

Never move shift lever without first

To En gage Augers

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

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

NOTE: The auger control can also be locked so that you can turn the chute directional control without interrupting snow throwing. Refer to previous section for details

Tire Chains (If equipped)

Tire chains should be used whenever extra traction is needed. Call our Customer Support Department, as instructed on Page 2, for information on tire chains and other optional accessories.

Operating Tips

NOTE: Allow the en gine to warm up for a few mi nutes as the engine will not develop full power until it reaches operating temperature.

WARNING: Temperature of muffler and

surrounding areas may exceed 150 these areas.

• For most efficien t snow r emoval, re move sno w immediately after it falls.

• Discharge snow downwind whenever possible. Slightly overlap each previous swath.

• Set the skid shoes 1/4" below the shave plate for normal usage.

• Clean the snow thrower thoroughly after each use.

F. Avoid

SECTION 5: MAKING ADJUSTMENTS

WARNING: NEVER attempt to clean

chute or make any adjustments while engine is running.

Chute Assembly

The distance snow is thrown can be adjusted by changing the angle of the chute assembly. Refer to Chute Tilt Control on page 10.

Skid Shoe

The space between shave plate and ground can be adjusted by raising or lowering the skid shoes. Refer to Skid Shoe Adjustment on page 8.

Tr action Control

Refer to Final Adjustments on page 7 to adjust traction control. If you are want to check further for correct adjustment, proceed as follows:

WARNING: Drain the ga soline out of your

snow thrower’s engine, place a piece of plastic film under the gas cap to avoid spillage before beginning to perform this adjustment.

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

• Reassemble the frame cover.

NOTE: If you placed plas tic film unde r the gas ca p, be certain to remove it before operating the snow thrower.

Auger Control

Refer to details on page 7 to adjust the auger control.

Shift Rod

To adjust the shift rod, proceed as follows.

• Remove the hairpin clip and slide the connector up to separate the upper shift rod from the lower shift rod. See Figure 15.

Shift Lever

Ferrule

• 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, there must be clearance between the friction wheel and the drive plate in all positions of the shift lever.

• With the traction control engaged, the friction wheel must contact the drive plate. See Figure 14.

Friction

Wheel

Gear Shaft

Drive Plate

Figure 14

If adjustment is necessary:

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

Connector

Hairpin

Clip

Upper Shift Rod

Shift Arm

Lower Shift Rod

Figure 15

• Place shift l ever in sixth (6) posi tion.

• Rotate the shift arm counterclockwise (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.

• Reconnect the upper shift rod to the lower shift rod by reinserting the cotter pin removed earlier and sliding the connector back down into place.

IMPORT ANT :

rod as instructed on page 7, before operating the snow thrower.

Check for correct adjustment of the shift

Drive Wheels

The wheels may be adjusted for two different methods of operation. The adjustment is made by placing the click pins in one of two different holes on the right side of the unit. See Figure 16.

One Wheel Driving—Insert the click pin only through the outside hole of the axle (not the rim) on the right side of the snow thrower. This position gives power drive to the left wheel only, making the unit easier to maneuver. Both Wheels Driving—Insert the click pin through the hole in the hub of the rim and the inside hole on the snow thrower’s right axle. This position is good for heavy snow as there is power drive in both wheels.

IMPORT ANT :

click pin inserted through both the rim and the outside hole in the axle. Doing so can result in serious damage to the drive system.

Never operate the snow thrower with the

SECTION 6: MAINTAINING YOUR SNOW THROWER

Inside Hole

in Axle

Click Pin

in Outside Hole

Figure 16

Lubrication

Before lubricating, 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.

Wheels

• Oil or spray lubricant into plastic wheel bearings inside the wheel hubs at least once a season. Remove wheels, clean and coat axles with a multipurpose automotive grease. See Figure 17.

Click Pin

Axle

Oil or spray lubricant here

IMPORT ANT :

friction wheel and aluminum drive plate.

Keep all grease and oil off the rubber

Chute Directional Control

The spiral on the end of the chute directional control and the base of the discharge chute itself should be lubed with multi-purpose automotive grease once a season. See Figure 19.

Engine

Refer to the seperate engine m anual p acked with yo ur unit for all engine lubrication instructions.

Auger Shaft

• At least once a season, remove shear bolts from auger shaft. Oil or spray lubricant inside shaft. See Figure 18. Also lubricate the plastic auger bearings at least once a season.

Shear Bolts

Figure 17

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 14.

Plastic Bearings

Figure 18

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 shifting mechanism at least once a season. Use engine oil or a spray lubricant. Avoid getting oil on rubber friction wheel and aluminum drive plate. Refer to Figure 14.

Gear Case

The gear case is lubricated with grease at the factory and does not require checking. If disassembled for any reason, lubricate with two ounces of Shell Alvania™ grease EPR00, part number 737-0168. Before reassembling, remove old sealant and apply Loctite™ 5699 or equivalent.

must be lubricated at least once a season or every twenty five hours of operation. The cams can be accessed beneath the handle panel. Use a multipurpose aut omotiv e grease.

Lube spiral and chute base

IMPORT ANT :

vent plug is free of grease in order to relieve pressure.

Do not overfill the gear case. Be sure the

Traction Control / Auger Cont rol Lock

The cams on the ends of the control rods which interlock the traction drive and auger drive clutches

SECTION 7: SERVICE

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 groun d it against the engine to prevent unintended starting.

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.

• To remove skid shoes, remove the four carriage bolts, belleville washers and hex nuts which attach them to the snow thrower. Reassemble new skid shoes with the four carriage bolts, belleville washers (cupped side goes against skid shoes) and hex nuts. Make certain the skid shoes are adjusted to be level.

• To remove shave plate, remove the carriage bolts, belleville washers and hex nuts which attach it to the snow thrower housing. Reassemble new shave plate, making sure heads of the carriage bolts are to the inside of the housing. Tighten securely.

Belt Removal and Replacement

WARNING: Disconnect the spark plug wire

from the spark p lug a nd gr ound.

Figure 19

Auger Belt(s)

• Remove the plastic belt cover on front of the engine by removing the two self-tapping screws. See Figure 20.

Belt Cover

Self-Tap ping Screws

Figure 20

• 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.

• Remove 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 21.

NOTE: Model E633 has only one auger belt. Disregard any instructions rega rding the s econd aug er belt if you have this model of snow thrower.

Rear Auger

Belt

Idler Pulley

Engine Pulley

Idler Pulley

Drive Belt

Engine Pulley

Front Auger Belt

Figure 21

• Unhook the idler spring from the hex bolt on the auger housing. See Figure 22.

• Back out the stop bolt until the support bracket rests on the auger pulley. See Figure 23.

NOTE: It may be necessa ry to loosen the s ix nuts that connect the frame to the auger housing to aid in bel t removal.

• Lift the rear auger belt from the auger pulley, and slip belt between the support bracket and the auger pulley. See Figure 22. Repeat this step for the front auger belt.

Figure 22

• Replace both auger drive belts by following instructions in re verse orde r.

NOTE: If you placed plas tic film unde r the gas ca p, be certain to remove it before operating the snow thrower.

Drive Belt

• Follow the first four steps of the instructions for servicing the auger belts.

• Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 21.

• Back out the stop bolt until the support bracket rests on the auger pulley. See Figure 23.

• Slip belt between friction wheel and friction wheel disc. See Figure 23. Remove and replace belt.

• Reassemble the parts removed earlier.

NOTE: The suppo rt bracket must rest on the stop bolt after the new belt has been assembled. See Figure 23.

Friction Wheel Disc

Stop Bolt

Friction Wheel

Drive Belt

Support Bracket

Auger Belt

Auger Pulley

Friction Wheel

Idler Spring

Auger Housing

Frame

Support Bracket Spring

Figure 23

Changing Friction Wheel Rubber

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, or place a piece of plas tic under the gas cap.

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

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

• Remove the click pins which secure the wheels, and remove the wheels from the axle.

• Using a 7/8" wrench to hold the shaft, loosen, but do not completely remove, the hex nut and bell washer on the left end of gear shaft. See Figure 24.

Hex Nut /

Bell Washer

Snow thrower shown resting on its auger housing; wheels not shown for clarity.

Figure 24

• 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.

• Move the gear shaft to the right and slide the friction wheel assembly from the shaft.

• Remove the six screws from the friction wheel assembly (three from each side). Remove the friction wheel rubber from between the friction wheel plates. See Figure 25.

Screws

Friction Wheel Rubber

Hub

Screws

• Position the friction wheel assembly up onto the pin of the shift rod assembly, and slide the shaft through th e asse mbly . Reas sembl e in re verse order.

NOTE: If you placed plas tic film unde r the gas ca p, be certain to remove it.

Augers

The augers are secured to the spiral shaft with two shear bolts and hex lock nuts. See Figure 26. If you hit a foreign object or ice jam, the snow thrower is designed so that the bolts may shear.

Shear Bolts

Figure 26

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 on page 5. For future use, order kit number OEM-710-0890.

IMPORT ANT :

standard hex bolts. Any damage to the auger gearbox or other components, as a result of doing so, will NOT be coved by your snow thrower’s warranty.

NEVER replace the auger shear bolts with

Friction Wheel Plates

Figure 25

• Reassemble new friction wheel rubber to the friction wheel plates and hub, tightening the six screws in rotation and with equal force.

SECTION 8: OFF-SEASON STORAGE

WARNING: Never store engine with fuel in

tank indoors or in poorly ventilated areas, where fuel fumes may reach a n 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.

Engine

• Refer to the engine manual for all engine related service pr ocedure s.

• Remove all debris from the exterior of equipment.

• Follow lubrication recommendations on page 13.

• Always store the snow thrower in a clean, dry area.

NOTE: When storing any type of power equipment in an unventilated or metal sto rage shed, care shou ld be taken to rust proof the equipment. Using a ligh t oil or silicone, coat the equipment, especially any chains, springs, bearings and cables.

SECTION 9: TROUBLESHOOTING

Problem Cause Remedy

Engine fails to start

Engine runs erratic

Loss of power

Engine overheats

Excessive vibration

Unit fail s to propel itself

Unit fail s to discharge snow

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.

8. Fuel shut-off valve (if equipped) closed.

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. Refer to the engine manual or have

1. Loose parts or damaged auger. 1. Stop engine immediately and

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 b olts sherar ed.

1. Fill tank with clean, fresh gasoline. Fuel becomes stale after thirty days unless a fuel stabilizer is used.

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.

8. Open fuel shut-off valve.

1. Move choke lever to OFF position.

2. Clean fuel line; fill tank with clean, fresh gasoline.

3. Drain fuel tank and carburetor. Refill with fr esh fu el.

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

1. Connect and tighten spark plug wire.

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

3. Refer to the engine manual.

the carburetor adjusted by an authorized engine service dealer.

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 pages 7 and 12.

2. Replace drive belt. Refer to page 14.

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. Adjust auger control cable. Refer to page 7.

4. Refer to page 14.

5. Replace shear bolts.

SECTION 10: PARTS LIST FOR MODELS E633 AND E663

42 39

B A

Models E633 and E663

Ref.

No.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

37.

38.

39.

Part No. Part Description

684-0008A Shift Arm Assembly 684-0053A

705-5204A 705-5266 Chute Crank Bracket 710-0262 Carriage Bolt, 5/16-18 x 1.5 710-0449 Carriage Bolt, 5/16-18 x 2.25

710-0788 Self Tapping Screw, 1/ 4-20 x 1 710-3008 Hex Cap Screw, 5/16 -18 x .75 710-3015 Hex Cap Screw, 1/4-20 x .7 5 711-0677 Ferrule, 5/16-18 x . 312 712-0287 Hex Nut, 1/4-20 712-0429 Lock Nut 714-0104 Internal Cotter Pin 714-0145 Click Pin 720-0201A Chute Crank Knob 720-0284 Wing Knob, 5/16-18 726-0100 Push Cap, 3/8 736-0185 Flat Washer, .375 x .7 38 x .0 63 736-0242 Bell Washer, .34 x .87 2 736-0270 Bell Washer, .265 x .7 5 x .062 736-0275 Flat Washer, .344 x .6 88 x .065 736-0451 Saddle Washer, .32 x .93 741-0475 Plastic Bushing 747-0620A Upper Shift Rod 747-0621 Lower Shift Rod 747-0737 Upper Chute Crank (E6 63) 749-0951 Lower Handle 749-0954 RH Handle (Upper) 749-0955 LH Handle (Upper) 750-0963 Shift Rod Connector 684-0102 Handle Panel Ass’y With Tilt 710-0459A Hex Cap Screw, 3/8-24 x 1.5 710-0599 Self Tapping Screw, 1/ 4-20 x .5 711-0653 Clevis Pin 712-0116 Jam Nut, 3/8-24 714-0104 Cotter Pin 732-0145 Compression Spring, .3 6 x 1.0 732-0193 Comp. Spring, .39 x .6 x .88 732-0746 Torsion Spring, .44 x .8 735-0199A Rubber Bumper

Lower Chute Crank (E663) Chute Crank Ass’y (E633)

Ref.

No.

40.

42.

43.

44.

45.

46.

47.

48.

49.

50.

51.

52.

53.

54.

55.

56.

57.

58.

59.

60.

61.

62.

63.

64.

65.

66.

67.

68.

69.

70.

71.

72.

73.

74.

75.

76.

78.

— 735-0234 Eyebolt Gromme t (Not Sho wn)

Part No. Part Description

736-0105 Bell Washer, .401 x .87 x .063 736-0509 Special Washer, .35 x .72 x .13 746-0778 Cable “Z” Fitting 747-0877 Cam Rod 748-0362 Cam Handle Lock 748-0363 Handle Lock Paw l 784-5619A Shift Handle 784-5679 LH Handle Suppor t Bracket 784-5680 RH Handle Support Bracket 784-5681 LH Handle Suppor t Bracket 784-5682 RH Handle Support Bracket 710-0451 Carriage Bolt, 5/ 16-18 x .75 710-0805 Hex Cap Screw, 51 6-18 x 1.5 710-0896 Screw, 1/4-14 x .625 712-0429 Hex Lock Nut, 5/16-18 712-3027 Hex Flange Lo ck Nut, 1/4 -20 731-0851A Lower Chute Flange Keeper 731-1300A Lower Chute 731-1313C Ch ute Tilt C able Guid e 731-1320 Upper Chute 736-0159 Washer, 5/16 736-0506 Special Washer, .28 x 1.2 x .06 746-0896 Chute Deflector Contro l Cable 746-0901 Chute Deflector Ca ble w/ C lip 784-5594 Cable Bracket 784-5604 Chute Tilt Handl e 629-0059 Halogen Light Harness 684-0036 RH Engagement Han dle Ass’y 684-0059 LH Engagement Handle Ass ’y 710-1003 Special Screw, #10-16 x .625 712-0271 Hex Sems Nut, 1/4-2 0

(for ground wire of l ight ass’y)

720-0232 Plastic Knob 725-1658 Halogen Lamp, 12-volt, 27 Watt 725-1672 Lens Assembly / Lamp Ho using 731-1545 Handle Pane w/ Ti ltl, Yello w 747-1136 Headlamp Retai ner 747-0697 Eyebolt

Models E633 and E663

NOTE: Axle goes here for

16” wheels only

(Drive Clutch Cable)

NOTE: On units with 16” wheels, cable is routed under axle.

Models E633 and E663

Ref. No. Part No. Part Description

656-0021A Friction Wheel Disc Assemb ly

684-0013B Shift Rod Assembly

684-0021 Support Bracket : Friction Wheel

684-0042C Bearing Ass embly: Friction Wheel

710-0538 Hex Bolt: 5/16-1 8 x .625 ”

710-0599 Self-Tapping Sc rew 1/4-20 x 0.5”

710-0809 Self-Tapping Sc rew 1/4-20 x 1.25”

710-1652 Self-Tapping Sc rew 1/4-20 x .625”

712-0116 Jam Lock Nut 3 /8-24

712-0703 Nut Insert 5/16 -18

10.

712-0711 Jam Nut

11.

714-0126 Key

12.

714-0143 Klik Pin

13.

714-0474 Cotter Pin

14.

715-0249 Roll Pin

15.

717-1444 Hex Shaft —7 Tooth

16.

717-1445 Gear — 80 Too th

17.

721-0263 Loctite™ Adhes ive

18.

732-0264 Extension Spri ng

19.

736-0105 Spring Washer

20.

736-0160 Flat Washer

21.

Ref. No. Part No. Part Description

736-0188 Flat Washer

22.

736-0242 Beleville Washer

23.

736-0351 Flat Washer

24.

737-0170 Lubricant

25.

738-0869 Axle: Wheel

26.

738-0924 Carriage Screw

27.

741-0563 Ball Bearing

28.

741-0598 Hex Flange Bearing

29.

746-0897 Auger Clutch Cable

30.

746-0898 Drive Clutch Cabl e

31.

748-0190 Spacer

32.

756-0625 Cable Roller

33.

784-5590 Shift Bracket : Frame

34.

784-5630A Frame: Snow Thrower

35.

784-5632A Auger Idler Arm

36.

784-5638 Frame Cover

37.

784-5687A Bracket: Auger Clutch Cable G uide

38.

784-5688 Bracket: Driv e Cable G uide

39.

784-5689A Front Support Bracket: Auger Cable

40.

Guide

Models E633 and E663

9 18

Models E633 and E663

Ref. No. Part No. Part Description

712-0116 Lock Jam Nut 3/8 -24

756-0178 Flat Idler

784-5632A Auger Idler Arm

710-0459A Hex Cap Screw 3/8-24 x 1.50

738-0281 Shoulder Screw

736-0174 Wave Washer

732-0611 Extension Spring

712-3068 Hex Nut 5/16-18

712-3010 Hex Nut 5/16-18

736-0119 Lock Washer 5/16

10.

05931 Housing

11.

741-0309 Ball Bearing

12.

710-0451 Carriage Bolt 5/16-18 x .75

13.

705-5226 Chute Reinforcement

14.

684-0055B

15.

684-0039C 712-3010 Hex Nut 5/16-18

16.

712-0429 Lock Nut 5/16-18

17.

736-0242 Bell Washer

18.

741-0475 Bushing

19.

784-5647 Chute Crank Bracket

20.

731-1379A Chute Adapter

21.

712-0324 Hex Lock Nut 1/ 4-20

22.

736-0463 Flat Washer

23.

30” Housing Ass’y (E6 63) 24” Housing Ass’y (E6 33)

Ref. No. Part No. Part Description

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

37.

38.

39.

40.

41.

42.

784-5618 Bearing Housing 710-0703 Carriage Screw 1/4-20 x .75 710-0604 Hex Washer Screw 5/16-18 736-0169 Lock Washer 3/8 712-0798 Hex Nut 3/8-16 741-0245 Hex Flange Bearing 784-5580 Skid Shoe 736-0242 Bell Washer 712-3010 Hex Nut 5/16-18 784-5575

784-5581A 710-0260 Carriage Bolt 5/16-18 x .62 684-0065 Impeller Assembly 715-0114 Pin 618-0160 618-0120 605-5248A 605-5188A 736-0188 Flat Washer 741-0493A Flange Bushing 605-5249A 605-5189A 710-0890A Shear Bolt 5/16-18 x 1.5

29.66” Shave Plate (E663)

23.66” Shave Plate (E633)

30” Gear Assembly (E66 3) 24” Gear Assembly (E63 3) 30” Spiral RH (E663) 24” Spiral RH (E633)

30” Spiral LH (E663) 24” Spiral LH (E633)

Ref. No. Part No. Part Description

618-0123 RH Reducer Housing (Incl. # 17, 18)

618-0124 LH Reducer Housing (Incl. # 17, 18)

710-0642 Self Tapping Screw, 1/4-20 x .75

711-1024

711-0908 714-0161 Hi-Pro Key, 3/16 x 5/8

715-0143 Spring Spiral Pin, .25 x 1.25

717-0528 Worm Gear, 20-tooth

717-0526 Worm Shaft

718-0186 Thrust Collar

721-0325 Grease Plug

10.

721-0327 Grease Seal

11.

736-0351 Flat Washer, .76 x 1.5 x .030

12.

Spiral Axle, 30” (E663) Spiral Axle, 24” (E633)

Ref. No. Part No. Part Description

13.

14.

15.

16.

17.

18.

19.

— 737-0168 Grease (2 Ounces)

736-0369 Flat Washer, .508 x 1.0 x .020 736-0445 Flat Washer, .76 x 1.5 x .060 741-0662 Flange Bearing, .75 x 1.0 x .59 748-0663 Flange Bearing, .75 x 1.0 x .925 741-0661 Flange Bearing, .754 x 1.0 x .925 721-0179 Grease Seal 618-0160

618-0120

Gear Assembly Complete, 30” (E663) Gear Assembly Complete, 24” (E633)

Model E633

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

Ref. No. Part No. Part Description

710-0599 Hex Wa sher Screw 1/4-20 x.5

731-1324 Belt Cov er

732-0339 Extensio n Spring

710-0627 Hex Sc rew 5/16-24 x .75

710-3005 Hex Cap Screw 3/8-1 6 x 1.25

05896A Drive Clutch Bracket

748-0234 Should er Spacer

756-0985 Pulley H alf

754-0343 V-Belt

756-0984 Pulley H alf

10.

736-0270 Bell W asher

11.

710-0230 Hex Cap Screw 1/4-2 8 x .50

12.

756-0313 Flat I dler

13.

710-1245 Lock Cap Screw 5 /16-24

14.

712-0181 Lock Jam Nut 3/8-16

15.

756-0569 Pulley H alf

16.

736-0242 Bell W asher

17.

736-0505 Flat W asher

18.

736-0507 Washer

19.

754-0430 Belt

20.

756-0967 Auger Pull ey

21.

736-0247 Flat W asher

22.

736-0331 Bell W asher

23.

710-0696 Hex Cap Screw 3/8-2 4

24.

748-0360 Pulley

25.

710-0654A Hex Washer Screw 3/8-16 x 1.0

26.

629-0071 Extensio n Cord

27.

28.

OEM-390987

Electric Start Kit (Inclu des Ref. 27 )

Model E663

Ref. No. Part No. Part Description

710-0599 Hex Washer Screw 1/4-20 x .50

731-1324 Belt Cover

732-0710 Extension Spring

710-0627 Hex Screw 5/16-24 x .7 5

710-3005 Hex Cap Screw 3/8-16 x 1.25

05896A Drive C lutch Id ler Bracket

748-0234 Shoulder Spacer

756-0987 Pulley Half

754-0346 V-Belt

756-0986 Pulley Half

10.

736-0270 Bell Washer

11.

710-0230 Hex Cap Screw 1/4-28 x .50

12.

756-0313 Flat Idler

13.

710-1245 Lock Hex Cap Scr ew 5/16-2 4

14.

712-0181 Lock Jam Nut 3/8-16

15.

756-0569 Pulley Half

16.

736-0242 Bell Washer

17.

736-0505 Flat Washer

18.

754-0430 Belt

19.

756-0967 Auger Pulley

20.

736-0247 Flat Washer 3/8 x 1.25 O D

21.

736-0331 Bell Washer

22.

710-0696 Hex Cap Screw 3/8-24

23.

748-0360 Adapter Pulley

24.

710-0654A Hex Screw 3/8-16 x 1.0

25.

629-0071 Extension Cord

26.

OEM-390-987Electric Start Kit

27.

Model E633

Model E663

MANUFACTURER’S LIMITED WARRANTY FOR:

The limited warranty set forth below is given by MTD PRODUCTS INC (“MTD”) with respect to new mercha ndise purchased and used in the United States, its possessions and territories.

MTD warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purc ha se an d w i ll, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship. This limited warranty shal l only apply if this product has been operated and maintained in accordance with the Operator’s Manual furnished with the product, a nd has not bee n subj ect to misuse, abuse, commercial use, neglect, accident, improper maintenance, alteration, vandalism, theft, fire, water or damage because of other peril or natur a l di sa ste r. Damage resul tin g fro m the installation or use of any accessory or attachment not approved by MTD Products Inc. for use with the product(s) covered by this manual will void your warranty as to any resulting damages.

Normal wear parts or components thereof are subject to separate terms as follows: All normal wear part 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 material or workmanship of OTHER component parts. Normal wear parts and components include, but are not limited to, belts, blades, blade adapters, grass bags, rider deck wheels, seats, snow thrower skid shoes, shave plates and tires. Batteries are covered by a 90-day limited replacement warranty.

HOW T O OBTAIN SERVICE: Warra nty service is a v aila b le, WITH PROOF OF PURCHASE THROUGH YOUR LOCAL AUTHORIZED SERVICE DEALER. To locate the dealer in your area, please check for a listing in the Yellow Pages or contact the Customer Service Department of MTD PRODUCTS INC by calling 1-800-800-7310 or writing to P.O. Box 368022, Cleveland, Ohio 44136-9722. No prod uc t returned directly to the factory will be accepted unless prior written permission has been extended by the Customer Service Department of MTD PRODUCTS INC.

b.Routine maintenance items such as lubricants, filters,

blade sharpening and tune-ups, or adjustments such as brake adjustments, clutch adjustments or deck adjustments; and normal deterioration of the exterior finish due to use or exposure.

c. Log splitter pumps, valves and cylinders have a sepa-

rate one year warranty.

d. MTD does not extend any warranty for products sold

or exported outside of the United States of America, its possessions and territories, except those sold through MTD’s authorized channels of export distribu- tion.

No implied warranty, including any implied warranty of merchantability or fitness for a particular purpose, applies after the applicable period of express written warranty above as to the par ts as ident ified. No o ther express war ranty or guaranty, whether writ ten or ora l, 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. (Some states do not

allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.)

The provisions as set f orth in this W a rranty pr o vide the sole and exclusive remedy arising from the sales. MTD shall not be liable for incidental or consequential loss or damages including, without limitation, expenses incurred for substitute or replacement lawn care services, for transportation or for related expenses, or for rental expenses to temporarily replace a warranted product. (Some states do not allow the exclusion or limita-

tion of incidental or consequential damages, so the above exclusion or limitation may not apply to you.)

In no event shall recover y of any kind be greater than th e amount of the purchase price o f the pro duct sold . Alter ati on of the safety features of the product shall void this Warranty. You assume the risk and liability for loss, damage, or injury to you and your property and/or to others and their property arising out of the use or misuse or inability to use the product.

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

a.The engine or component parts thereof. These items

carry a separate manufacturer’s warranty. Please refer to the applicable manufacturer’s warranty on these items.

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

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.

Yard-Man 31AE633E401, 31AE663H401 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual