Craftsman 247.883700 Operator's Manual page 17

Checking Spark Plug
Checksparkplug yearlyor every 100operatinghours
1. Cleanarea aroundspark plug.
2. Remove and inspectspark plug.
3. Replace spark plug if porcelainis crackedor if electrodesare
pitted,burnedor fouledwith deposits
4. Checkelectrodegap with a feelergaugeand set gap to .030
(0.76ram)if necessary.See Figure14.
5. Reinstall spark plugand tightensecurely.
NOTE:A resistorsparkplug must be usedfor replacement. C ontacta
SearsPartsand RepairCenterfor a replacement s park plug.
Carburetor
If yoususpectyourcarburetorneedsadjusting,seea SearsParts and
RepairCenter.Engineperformanceshouldnotbe affectedat altitudes
up to 7,000feet (2,134meters).Foroperationat higherelevations,
contacta SearsPartsand RepairCenter.
Engine Speed
Avoidseriousinjuryor death,DO NOTmodifyenginein anyway.
Tamperingwith thegovernorsettingcancause the engineand
equipmentto operateat unsafespeeds.NEVERtamper with factory
settingof engine governor. R unningthe enginefasterthanthe speed
set at thefactory is dangerous.
LUBRICATION
Gear Shaft
The gear (hex)shaft shouldbe lubricatedat least oncea seasonor
after every25 hoursof operation.
1. Topreventspillage,placea pieceof plasticwrap underthegas
capand tightensecurely.
2. Carefullypivot the snowthrowerup andforwardso that it restson
the augerhousing.
3. Removethe lowerframecover fromthe undersideof the snow
throwerbyremovingthe four self-tappingscrewswhichsecure it.
4. Applya lightcoatingof engineoil (or 3-in-1oil) to the hexshaft.
See Figure15.
NOTE:Whenlubricatingthe hexshaft, be carefulnotto get any oil on
the aluminumdriveplateor rubberfrictionwheel.Doingso will hinder
the snowthrower'sdrivesystem.Wipeoff anyexcessor spilledoil.
Wheels
At leastonce a season,removeboth wheels.Cleanand coat the axles
with a multipurpose automotivegreasebeforereinstallingwheels.
Auger Shaft
At leastonce a season,removethe shearpinson augershaft. Spray
lubricantinsideshaft,and aroundthe spacersand flange bearings
foundat eitherend of the shaft. See Figure16.
3
II
II
1..030 (.76 ram)Gap
2. Electrodes
Porcelain
Figure14
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Figure15
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Figure 16
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