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5. Afterthe sparkplug is seated,tightenwith a sparkplugwrenchto
compressthe washer.
NOTE:Wheninstallinga newsparkplug,tighten1/2-turnafter the
sparkplugseatsto compressthe washer.Whenreinstallinga used
sparkplug,tighten1/8-to 1/4-turnafter the sparkplugseatsto
compressthe washer.
hot andcan ine.
CARBURETOR ADJUSTMENT
Thecarburetoris notuseradjustable.ContactSearsParts& Repairfor
adjustment.
LUBRICATION
Drive and Shifting Mechanism
At leastoncea seasonor afterevery25 hoursof operation,remove
rearcover.Lubricateall chains,sprockets,gears,bearings,shafts,and
the shiftingmechanism.Useengineoil ora spray lubricant.Referto
Figure22.
NOTE:Beforetippingthe unit onthe fronthousing,runthefuel tank
emptyso fueldoes notleak outof thefuel cap.
1. Carefullypivotthe snowthrowerup and forwardso that it restson
theauger housing.
2. Removethe frame coverfrom the undersideof the snowthrower
by removingthe self-tappingscrewswhichsecureit. Referto
Figure27.
3. Applya lightcoatingof engineoil (or 3-in-1oil) to the hexshaft.
SeeFig.22.
NOTE: Becarefulnotto get any oil on thealuminumdrive plateor
rubberfrictionwheel.Doingso will hinderthe snowthrower'sdrive
system.Wipeoff anyexcessor spilledoil.
/ .............
Aluminum
Drive
Wheel Axle
Support Bracket
4. At least once a season grease the wheel axle with Arctic grease,
part number 737-0318. The grease fitting is located on the
wheel axle tube behind the wheel axle support bracket.
Wheels
At leastoncea season,removebothwheels.Cleanand coat the axles
witha multipurposeautomotivegreasebeforereinstallingwheels.
Chute Directional Control
Once aseason,lubricatethe eyebolt bushingand the spiralwith 3-in-1
oil.
Auger Shaft
At leastoncea season,oneat a time, removeallof theshearpins
fromthe auger shaft.Spraylubricantinsidethe hubof eachauger
spiralassemblyand aroundthe spacerson the augershaft.
Greasefittingscan alsobe foundat each endof the augershaft.
Lubricatewitha greasegun oncea season.See Figure23.
Gear Case
The augergearcaseis equippedwitha greasefitting. Lubricatewith
greaseoncea season(orderpart number737-0168).SeeFigure6-2.
NOTE: Torelievepressure,removethe ventplugbeforelubricatingthe
gearcase.See Figure23. Failureto do so could resultindamageto
the gearcaseseals.
Augers
Eachof the augerspiralassembliesis securedto the spiralshaftwith
a shearpin and cotter pin.If the augershouldstrikeaforeignobjector
ice jam,the snowthroweris designedso that the pinsmay shear.
1. If augersdonot turn, checkto seeif pinshavesheared.
2. Replacethe pinsif needed.Tworeplacementshearpinsand
cotterpins havebeen providedwith the snowthrower.Sprayan
oil lubricantintoshaft beforeinsertingnewpinsand securingwith
newcotter pins.See Fig.23.
i • i I ii
i Shear Pins ii:i
" Vent Plug Grease Fitting
Bow-Tie Pins Spacers
Figure23
Figure22
21
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