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Checking Spark Plug
Checksparkplugyearlyor every100operatinghours
1. Cleanarea aroundspark plug.
2. Removeand inspectspark plug.
3. Replacesparkplug if porcelainis crackedor if electrodesare
pitted,burnedorfouledwith deposits
4. Checkelectrodegap with a feelergaugeand set gap to .030
(0.76ram)if necessary.See Figure15.
5. Reinstallsparkplugand tightensecurely.
NOTE:A resistorsparkplugmust beusedfor replacement.Contacta
SearsPartsand RepairCenterfor a replacementspark plug.
Carburetor
If yoususpectyourcarburetorneedsadjusting,seea SearsPartsand
RepairCenter.Engineperformanceshouldnotbe affectedat altitudes
upto 7,000feet(2,134meters).Foroperationat higherelevations,
contacta SearsPartsand RepairCenter.
Engine Speed
Avoidseriousinjuryor death,DO NOTmodifyenginein anyway.
Tamperingwiththegovernorsettingcancause the engineand
equipmentto operateat unsafespeeds.NEVERtamper with factory
settingof enginegovernor.Runningthe enginefasterthanthe speed
set at thefactoryis dangerous.
LUBRICATION
Drive and Shifting Mechanism
At leastonce a seasonorafterevery25hoursof operation,remove
rearcover.Lubricateall chains,sprockets,gears,bearings,shafts,and
the shiftingmechanism.Useengineoil or a spray lubricant.Referto
Figure16.
NOTE:Becarefulnotto getany oilon thealuminumdriveplateor
rubberfrictionwheel.Doingso will hinderthe snowthrower'sdrive
system.Wipeoff anyexcessor spilledoil.
Wheels
At leastonce a season,removebothwheels.Cleanand coat the axles
witha multipurposeautomotivegreasebeforereinstallingwheels.
Chute Directional Control
Oncea season,lubricatetheeye boltbushingandthe spiralwith
3-in-1oil.
Auger Shaft
At leastonce a season,removethe shearpinson augershaft.Spray
lubricantinsideshaft,andaroundthe spacersand flange bearings
foundat eitherendof the shaft. See Figure17.
3
II
II
1..030 (.76 ram)Gap
2. Electrodes
Porcelain
Figure15
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Figure16
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Figure 17
15
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