Craftsman 247.88833 Operator's Manual page 17

Checksparkplug yearlyor every 100operatinghours.
1. Removechoke controlknoband safety key.
2. Loosenand removethe mountingscrewsfrom the snow hood.
3. Slowlyremovethe snow hood,makingsurethat the primerbulb
hoseand ignitionwireremainconnected. S ee Figure15.
4. Removeand inspectspark plug.
5. Replacespark plug if porcelainis crackedor if electrodesare
pitted,burnedor fouledwith deposits.
6. Checkelectrodegap with a feelergaugeand set gap to .030
(0.76mm)if necessary.See Figure16.
7. Reinstallspark plugand tightensecurely.
8. Remountthesnow hoodto theengine with themountingscrews,
again makingsure theprimerbulb hoseand ignitionwireare
connected.
9. Connectthe chokecontrolknob tothe chokeshaft on the
carburetor.If the chokecontrol knobis not installedcorrectly,the
chokewill notoperate.
10. Installthe safetykey.
f
Mounting
Screws
Knob
Figure15
NOTE:A resistorspark plugmustbe usedfor replacement. C ontacta
SearsPartsand RepairCenterfor a replacement s park plug.
Carburetor
Enginesoperatedat about3000 to 5000 feet (900 to 1500meters)
abovesea levelmay requirea highaltitudecarburetormainjet. If
erraticperformanceis observed,contacta SearsPartsand Repair
Centerfor costto install/purchasea high altitudecarburetormainjet.
Engine Speed
LUBRICATION
Avoidseriousinjuryor death,DO NOTmodifyenginein anyway.
Tampering with the governorsettingcancause theengineand
equipmentto operateat unsafespeeds.NEVERtamperwith factory
settingof enginegovernor.Runningthe enginefasterthanthe speed
set at thefactory is dangerous.
At leastonce a seasonor after every25 hoursof operation,remove
rear cover.Lubricateall chains,sprockets,gears,bearings,shafts,and
the shiftingmechanism.Useengineoil or a spray lubricant.Referto
Figure17.
NOTE:Be carefulnotto get any oil on thealuminumdrive plateor
rubberfrictionwheel.Doingso will hinderthe snowthrower'sdrive
system.Wipeoff anyexcessor spilledoil.
Wheels
At leastonce a season,removebothwheels.Cleanand coat theaxles
with a multipurpose automotivegreasebeforereinstallingwheels.
Chute Directional Control
Oncea season,lubricatetheeye boltbushingand the spiralwith
3-in-1oil.
-,,,
II
II
II
II
1..030 (.76 rnm) Gap
2. Electrodes
k,_i ' Porcelain
\
\\\ \,,
\
f
Figure16
J
Figure17
J
17