Craftsman 28911 manual Spark Plug, ElectrodePorcelain _.030 .76 mm gap, Lubrication, Front Axles

Spark Plug

1.Cleanareaaroundthe sparkplugbase.Do notsandblastspark plug,Sparkplugshouldbecleanedby scrapingorwire brushing andwashingwitha commercialsolvent

Removeand inspectthe sparkplug.Checkgap to makesureit is setat .030".See Figure12.

ElectrodePorcelain

_.030 (.76 mm) gap

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Figure12

3.Replacethesparkplug(Champion®RC12YC)once a season.

Muffler

Temperatureof mufflerandnearbyengineareasmayexceed150°F (65°0).Avoidcontactwiththeseareas.

•inspectmufflerperiodically,and replaceif necessary.Replace- mentpartsfor the mufflermustbethe sameand installedin the samepositionas the originalparts.

Clean Engine

Do notuse waterto cleanengineparts.Watercouldcontaminatefuel system.Usea brushordry cloth.

Dailyor beforeeveryuse,cleangrass,chaff oraccumulated debrisfromengine.Keeplinkage,spring,andcontrolsclean.

Keepareaaroundandbehindmufflerfreeof any combustible debris.

Keepingenginecleanallowsair movementaroundengine.

•Enginepartsshouldbe keptcleanto reducethe riskof overheat- ingandignitionof accumulateddebris.

Carburetor Adjustment

•Thecarburetoron thisengineis not adjustable.

LUBRICATION

Beforelubricating,repairing,or inspecting,alwaysdisengagePTO (BladeEngageLever),moveshift leverinto neutralposition,set parkingbrake,stopengineand removekeyto preventunintended starting.

Pivot Points & Linkage

Lubricateallthe pivotpointsonthe drivesystem,parkingbrakeandlift linkageat leastonce a seasonwithlightoil.

Rear Wheels

The rearwheelsshouldberemovedfromtheaxlesoncea season. Lubricatetheaxlesandthe rimswellwithan all-purposegreasebefore re-installingthem.

Front Axles

Eachend of thetractor'sfrontpivotbar maybeequippedwitha grease fitting. Lubricatewitha greasegunafterevery25hoursof tractor operation.

Battery

The batteryis sealedandis maintenance-freeAcidlevelscannotbe. checked.

Alwayskeepthe batterycablesandterminalscleanandfree of corrosivebuild-up.

Aftercleaningthe batteryandterminals,applya lightcoatof petroleumjelly orgreaseto bothterminals.

Alwayskeepthe rubberbootpositionedoverthe positiveterminal to preventshorting.

iMPORTANT: if removingthe batteryfor any reason,disconnectthe NEGATIVE(Black)wirefromitsterminalfirst,followedby the POSi- TIVE(Red)wire.When re-installingthe battery,alwaysconnectthe POSITIVE(Red)wire to its terminalfirst,followedbythe NEGATIVE (Black)wire. Becertainthatthe wiresareconnectedto the correct terminals;reversingthemcouldchangethe polarityandresultin damageto yourengine'salternatingsystem.

Cleaning Battery

Cleanthe batteryby removingit fromthe tractorandwashingwith a bakingsodaandwatersolution.Ifnecessary,scrapethe battery terminalswitha wirebrushto removedeposits.Coatterminalsand exposedwiringwithgreaseor petroleumjellyto preventcorrosion. Battery Failures

Somecommoncausesfor batteryfailureare: incorrectinitialactivation

Overcharging

Freezing

Undercharging

Corrodedconnections

Thesefailuresare NOTcoveredbyyourtractor'swarranty.

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