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• Maintenance
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OP
A
O
AL
Two-Stage
Snow Thrower-
C, D Style
iMPORTANT
READ SAFETY
RULES AND iNSTRUCTiONS
CAREFULLY
BEFORE
OPERATION
Warning:
This unit isequippedwith an internal combustionengineand shouldnot be usedon or nearany uniiprovedforest-covered, b rush-
coveredor grass-covered land unlesstheengine'sexhaustsystemis equippedwith a sparkarrestermeetingapplicablelocalor statelaws(if any).
If a sparkarresterisused,it shouldbe maintainedineffectiveworkingorder by the operator.In theState of Californiathe aboveisrequiredbylaw
(Section4442 of the CaliforniaPublicResources Code). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester
for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131 Cleveland,
Ohio 44136-0019.
PRINTEDIN U.S.A
MTD LLC, P.O. BOX 361131 CLEVELAND,
OHIO 44136=0019
FORMNO.769-01274D
08/05/2005
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Summary of Contents for MTD 31AS6ACD731
- Page 1 If a sparkarresterisused,it shouldbe maintainedineffectiveworkingorder by the operator.In theState of Californiathe aboveisrequiredbylaw (Section4442 of the CaliforniaPublicResources Code). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131 Cleveland, Ohio 44136-0019. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136=0019 PRINTEDIN U.S.A FORMNO.769-01274D...
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Page 2: Customer Support
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. Table of Contents Safety Labels ............Maintaining Your Snow Thrower ...... Safe Operation Practices ........ - Page 3 1. KEEP AWAY FROMROTATING IMPELLER ANDAUGER. C ONTACT WITH IMPELLER OR AUGER CAN AMPUTATE H ANDS ANDFEET. iil _I ii_ _ i _iii_!i _ _ii_ ii USECLEAN-OUT TOOLTOUNCLOG DISCHARGE C HUTE. DISENGAGE CLUTCH L EVERS, STOP ENGINE, ANDREMAIN BEHIND HANDLES U NTIL ALL MOVING PARTS HAVE STOPPED BEFORE UNCLOGGING ORSERVICING MACHINE.
- Page 4 WARNING: Engine Exhaust, some of its constituents, and certain vehicle compo- nents contain or emit chemicals known to State of Californiato cause cancer and birth defects or other reproductiveharm. DANGER: This machine was built to be operated according to the rules for safe operation in this manual.
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Page 5: Maintenance
Operation Maintenance & Storage 1. Donot put hands or feet near rotatingparts, inthe 1. Nevertamper withsafetydevices.Checktheir proper auger/impellerhousingor chuteassembly.Contactwiththe operationregularly.Referto the maintenanceandadjust- mentsectionsof this manual. rotatingparts can amputatehands andfeet. 2. The auger/impellercontrolleveris a safetydevice.Never 2. Beforecleaning,repairing,or inspectingmachinedisen- bypassits operation.Doingso makesthe machineunsafe gageall control leversandstop the engine.Wait untilthe and may causepersonalinjury. - Page 6 NOTE:References to right or left sideof the snow throwerare determined 1. Observethe lowerrear area of the snowthrowerto from behindthe unitin the be sure bothcablesare alignedwith rollerguides operatingposition(standing beforepivotingthe handleupward. directlvbehindthe snow 2. Securethe handleby tighteningthe plasticwing thrower,facingthe handle knoblocatedon boththe left and rightsidesof the panel).
- Page 7 Removethe fiat washerand hairpinclip from theend of the chute directionalcontrol. insertthe end of the chute directionalcontrolinto the lowerbracketand securewith thefiat washerand hair- pin clipjust removed.If necessary,the lowerbracket can be adjusted.Referto ChuteBracketAdjustment. on Page 13. Setting Insertthe shift leverthroughthe speedselectpanel and secureto theshift springleverwith the two hex head bolts and flangelock nuts that comeattachedto the shift lever.
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Page 8: Know Your Snow Thrower
Know Your Snow Thrower Electric StartButton Operating Your S"ow Th rower EngineControls Recoil S tarter Handle Electric Starter Outlet Primer WARNi Choke Skid Shoe Control Read, u nderstand, and f o,o a, nstruc tions and warnings Control on the machineand in thismanual before Figure 1 operating,... - Page 9 Auger Control Ignition The ignition keyis a safety devise.It mustbe fully insertedin orderfor the engineto start. Removethe ignition key whenthe snowthrowerisnot inuse. Donot turnthe ignitionkey in an attemptto startthe engine.Doingso maycause it to break. Clean-Out Tool to clear a clogged chute assem- WARNING•...
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Page 10: Stopping The Engine
6. Asthe enginewarms,slowlyrotatethe chokecontrol Gas & Oil Fill-Up to the OFFposition.If the enginefalters,quicklyrotate Servicethe enginewith gasolineand oil as instructedin thechokecontrol backto FULLand then slowlyinto the Tecumseh Enginesmanualpackedseparately with theOFF positionagain. yoursnowthrower.Readinstructionscarefully. 7. Whendisconnectingtheextensioncord, always StartingThe Engine unplugtheend at thethree-prongwalloutlet before 1. - Page 11 4. Movethrottlecontrolto STOPposition. To Engage Augers 5. Removethe ignitionkey and store in a safe place. 1. Toengagetheaugersand start throwingsnow, squeezethe augercontrolagainstthe left handle. 6. Wipeall snowand moisturefrom thearea aroundthe Releaseto stopthe augers. engineas wellas the area in and aroundthe drive controland augercontrol.Also,engageand release When selecting a Auger Control Test...
- Page 12 Auger Control Referto Auger ControlTeston Page 11to adjustthe augercontrol. Drive Control Whenthedrivecontrol is releasedand in thedisen- gaged"up" position,the cable shouldhavevery little slack. It shouldNOT be tight. Checkthe adjustmentof the drivecontrolas follows: 1. With thedrive controlreleased,pushthe snow throwergently forward.The unitshouldroll freely. 2.
- Page 13 Skid Shoes The spacebetweenthe skid shoesand the groundcan be adjusted.See Figure5. • Forclose snow removalon a smoothsurface,raise skid shoes higheron the augerhousing. Use a middleor lowerpositionwhenthe areato be clearedis uneven,such as a graveldriveway. Toadjustthe skid shoes: 1. Loosenthe four hexnuts (two on each side)and carriagebolts.
- Page 14 Engine Referto the separate Tecumseh Enginesmanual packedwith your unitfor all enginemaintenance. Lubrication Engine Maintaining Referto the separate Tecumseh Enginesmanual packedwith your unitfor all enginelubricationinstruc- tions. Your Snow Gear Shaft Thegear (hex) shaftshouldbe lubricatedat least once a seasonor after every25 hoursof operation. 1.
- Page 15 Auger Belt Replacement To removeand replaceyoursnow thrower'sauger belt, proceedas follows: 1. Removethe plasticbelt coveron the front of the engineby removingthe two self-tappingscrews. NOTE:Drainthe gasolinefrom the snowthrower,or placea pieceof plasticunderthe gas cap. 2. Carefullypivotthe snowthrowerup and forwardso that it restson the augerhousing.Removethe frame coverfrom the undersideof the snow throwerby removingfour self-tappingscrewswhich secureit.
- Page 16 Augers * Theaugersare securedto the spiralshaftwith two 7= < shearpinsand cotterpins. If the augershouldstrikea foreignobject or icejam,the snowthroweris designed so that the pinsmay shear.Referto Figure9. If theaugerswill notturn, checkto seeifthe pinshave "''tii v=a=n a n ng sheared.One set of replacement s hearpins hasbeen providedwith the snowthrower.When replacingpins, sprayan oil lubricantintoshaft beforeinserting n ew pins.
- Page 17 Friction Wheel Removal If the snowthrowerfails to drivewith the drivecontrol engaged,and performingthedrivecontrol cableadjust- menton page 14fails to correctthe problem,the friction wheelmay needto be replaced.Followthe instructions below.Examinethe frictionwheelfor signsof wearor crackingand replaceif necessary • Placethe shiftleverin third Forward(F3) position. • Drainthe gasolinefrom the snowthrower,or placea pieceof plasticunderthe gas cap.
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Page 18: Preparing Engine
If the snowthrowerwill not be usedfor30 daysor longer, Removeall gasolinefrom thecarburetorand the fuel or if it is the end of the snow seasonwhenthe last pos- tank to preventgumdepositsfromformingon these sibilityof snow is gone,the equipmentneedsto be stored partsand harmingtheengine. properly.Followstorageinstructionsbelowto ensuretop Runthe engineuntilthe fuel tank is emptyand it stops performance from the snowthrowerfor many moreyears. - Page 19 4. Carburetoroutof adjustment. 4. Contact MTDServiceCenter. further details, Contact aMTD authorized service center or call Engine overheats 1 carburetor notadjustedproperly, li Contact MTD serViCe Center: 1(800) 800-7310for assistance Excessive 1. Looseparts or damagedauger. Stop engineimmediately and Vibration disconnectsparkplug wire.Tighten all bolts and nuts.If vibration continues,haveunit servicedby a MTDServiceCenter.
- Page 20 Styles C & D...
- Page 21 731-2635 SnowRemoval T oolMount 29. 684-04107 SpiralAssembly,LH 684-04057 ImpellerAssembly,12"Dia. 30. 684-04108 SpiralAssembly,RH 710-0347 Hex Screw,3/8-16,1.75,Gr5 31. 731-04870" Spacer,1.25ODx.75 ID x 1.00 32. 736-0188 Washer,Fiat,.76x 1.49x .06 710-0451 Bolt, Carriage,5/16-18,.750Grl 710-0604A Screw, 5/16-18,0.625 33. 741-0493A Bushing,Flange,.80 ID x .91OD 710-0703 Screw,Carriage,1/4-20,.750,Gr5 34.
- Page 22 Styles C & D...
- Page 23 631-04133 HandleAss'y,Lock LH 24. 720-0201A Crank Knob,1.0Dia.x 3.2, Black 631-04134A HandleAss'y,Lock, RH 25. 720-0284 Knob Assembly,WingNut,5/16-18 684-04106A HandleAss'y,Engagement L H 26. 726-0100 Cap, Push,3/8 Rod 27. 735-0234 Grommet,.44ID x .94 ODx .50 684-04105A HandleAss'y,Engagement,RH 28. 736-0185 Washer,Fiat,.375x .738x .063 710-0376 Screw,Self-tapping,5/16-18,.625 710-0604A Screw,Self-tapping,5/16-18,1.0...
- Page 24 Styles C & D...
- Page 25 756-04177 Disc, FrictionWheel 34. 790-00207 Guide Bracket,Drive Cable 684-04153 FrictionWheelAssembly,5.50D 35. 790-00226 Cover,Frame 684-04154 SupportBracket,FrictionWheel 36. See Chart WheelAssembly 684-04156 Shift Assembly,Rod 37. 731-04873 Spacer,1.25x .75x 3.0 710-0627 Hex Screw,5/16-24,.750,Gr5 731-04877" Spacer,1.25x .75x 1.50 710-0788 Screw,1/4-20,1.000 38. 738-04168 Axle, .75x 22" illustrated 710-1652 Screw1/4-20x.625...
- Page 26 NOTES...
- Page 27 NOTES...
- Page 28 To locate the dealer in your area, check your Yellow Pages, or lasts, so the aboveexclusionsor limitationsmay notapplyto you. contact MTD LLC at RO. Box 361131,Cleveland, Ohio 44136-0019,or In no eventshall recoveryof any kind be greaterthan theamountof the call 1-800-800-7310 or 1-330-220-4683 or log on to our Web site at purchasepriceof the productsold.