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Spark Plug
1. Cleanareaaroundthe sparkplugbase.Do notsandblastspark
plug,Sparkplugshouldbe cleanedby scrapingorwire brushing
andwashingwith a commercialsolvent
Removeand inspectthe sparkplug.Checkgap to makesureit is
setat .030".See Figure13.
Electrode Porcelain
_.030 (.76 mm) gap
\
Figure13
3. Replacethesparkplug (Champion®RC12YC)once a season.
Muffler
Temperatureof mufflerandnearbyengineareasmayexceed150° F
(65°0).Avoidcontactwiththese areas.
• inspectmufflerperiodically,and replaceif necessary.Replace-
mentpartsfor the mufflermustbe the sameand installedin the
samepositionas the originalparts.
Clean Engine
• Dailyor beforeeveryuse,cleangrass,chaff or accumulated
debrisfromengine.Keeplinkage,spring,andcontrolsclean.
Keepareaaroundand behindmufflerfreeof any combustible
debris.
Keepingenginecleanallowsair movementaroundengine.
• Enginepartsshouldbe keptcleanto reducethe riskof overheat-
ingandignitionof accumulateddebris.
Do notuse waterto cleanengineparts.Watercouldcontaminatefuel
system.Use a brushordry cloth.
Carburetor Adjustment
• Thecarburetoron this engineisnot adjustable.
LUBRICATION
Beforelubricating,repairing,or inspecting,alwaysdisengagePTO
(BladeEngageLever),moveshift leverinto neutralposition,set
parkingbrake,stopengineand removekeyto preventunintended
starting.
Pivot Points & Linkage
Lubricateall the pivot pointsonthe drivesystem,parkingbrakeand lift
linkageat leastonce a seasonwithlightoil.
Rear Wheels
The rear wheelsshouldberemovedfrom theaxlesoncea season.
Lubricatetheaxles andthe rimswellwithan all-purposegreasebefore
re-installingthem.
Front Axles
Eachend of thetractor'sfrontpivotbar maybe equippedwitha grease
fitting.Lubricatewith a greasegun afterevery25 hoursof tractor
operation.
Battery
The batteryis sealedand is maintenance-free.Acidlevelscannot be
checked.
Alwayskeepthe batterycablesand terminalscleanand free of
corrosivebuild-up.
Aftercleaningthe batteryand terminals,applya lightcoat of
petroleumjelly orgreaseto bothterminals.
Alwayskeepthe rubberbootpositionedoverthe positiveterminal
to preventshorting.
iMPORTANT: if removingthe batteryfor any reason,disconnectthe
NEGATIVE(Black)wirefrom itsterminalfirst,followedby the POSI-
TIVE(Red)wire.When re-installingthe battery,alwaysconnectthe
POSITIVE(Red)wire to its terminalfirst,followedbythe NEGATIVE
(Black)wire.Becertainthat the wiresareconnectedto the correct
terminals;reversingthemcouldchangethe polarityandresult in
damageto yourengine'salternatingsystem.
Cleaning Battery
Cleanthe batteryby removingit fromthe tractorand washingwith
a bakingsodaandwatersolution.If necessary,scrapethe battery
terminalswith a wirebrushto removedeposits.Coatterminalsand
exposedwiringwithgreaseor petroleumjellyto preventcorrosion.
Battery Failures
Somecommoncausesfor batteryfailureare:
incorrectinitialactivation
Overcharging
Freezing
Undercharging
Corrodedconnections
Thesefailuresare NOTcoveredbyyourtractor'swarranty.
21
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