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Checking Spark Plug
Checksparkplug yearlyor every 100operatinghours
1. Cleanarea aroundspark plug.
2. Removeand inspectspark plug.
3. Replacesparkplugif porcelainis crackedor if electrodesare
pitted,burnedor fouledwithdeposits
4. Checkelectrodegap with a feelergaugeandset gapto .030
(0.76ram)if necessary.SeeFigure15.
5. Reinstallsparkplugandtightensecurely.
NOTE:A resistorsparkplug must beusedfor replacement.Contacta
SearsPartsand RepairCenterfor a replacementspark plug.
Carburetor
If yoususpectyourcarburetorneedsadjusting,seea SearsParts and
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:Be carefulnotto getany oilon thealuminumdriveplateor
rubberfrictionwheel.Doingso will hinderthe snowthrower'sdrive
system.Wipeoff anyexcessor spilledoil.
Wheels
At leastonce a season,removebothwheels.Cleanandcoatthe axles
witha multipurposeautomotivegreasebeforereinstallingwheels.
Chute Directional Control
Oncea season,lubricatetheeye bolt bushingandthe spiralwith
3-in-1oil.
Auger Shaft
At leastonce a season,removethe shearpinson augershaft. Spray
lubricantinsideshaft,and aroundthe spacersandflange bearings
foundat eitherend of the shaft. See Figure17.
3
II
II
1..030 (.76 ram)Gap
2. Electrodes
Porcelain
Figure15
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,,, <¢_._ , , ,
,,,, _,,,
,,,, _ ,,, _ [
,, ,_ [
|¢
f
I
•••L.i,
Figure16
Figure17
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17
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