Craftsman 247.887760 manual General Recommendations, Engine Maintenance, Spark Plug

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Alwaysstopengine,disconnectsparkplugwire,andgroundagainst enginebeforeperformingany typeof maintenanceon yourmachine.

ElectrodePorcelain

GENERAL RECOMMENDATIONS

•Alwaysobservesafetyruleswhenperformingany maintenance.

•Thewarrantyon thislawnmowerdoesnot coveritemsthathave beensubjectedto operatorabuseor negligence.To receivefull valuefromwarranty,operatormustmaintainthe equipmentas instructedhere.

•Changingof engine-governedspeedwill voidenginewarranty.

•Alladjustmentsshouldbecheckedat leastonceeach season.

•Periodicallycheckall fastenersandmakesurethesearetight.

ENGINE MAINTENANCE

Spark Plug

Forgoodperformance,the sparkplugmustbeproperlygappedand freeof deposits.Replacethe sparkplugannually.

1.Disconnectthe cap fromthe sparkplug,andremoveanydirt from the sparkplugarea.

2.Usethe propersizesparkplugwrenchto removethe sparkplug.

NOTE: Replacewitha Champion®RC12YCsparkplug.

3.Checkthegapwitha wire gauge.SeeFigure12.Sparkpluggap shouldbe0.020in(0.51ram). If necessary,resetthe gap.

4.installandtightenthe sparkplugto the recommendedtorque(180 Ib-in[20 Nm]).

5.Attachthe sparkplugcapto thesparkplug.

Air Cleaner

Adirtyaircleanerwill restrictairflowto the carburetorandcausepoor engineperformance,inspectthe filtereachtimetheengineis oper- ated.Youwill needto cleanthe filtermorefrequentlyif youoperatethe enginein verydusty areas.

Cleantheair cleanerevery50hoursof operationoronce a season. Replacetheaircleanerannually.

Neverstartor runthe enginewiththe aircleanerassemblyor theair filterremoved.

NOTE:Do notuse pressurizedairor solventsto cleanthe filter.Pres- surizedair can damagethefilterandsolventswill dissolvethefilter.

1.Removethefastenerandair cleanercover.See Figure13.

2.Removethepre-cleaner(if equipped)andfilter.

3.Toloosendebris,gentlytap the filterona hardsurface,if filteris excessivelydirty, replacewitha newfilter.

Figure12

Fastener

Cover

Air Filter

Figure13

4.Washthe pre-cleanerin liquiddetergentandwaterandallowit to thoroughlyair dry. Do not oilthe pre-cleaner.

5.Assemblethe dry pre-cleanerto the filter.

6.installthe filterandpre-cleanerinto the base.Makesurefilterfits securelyin the base.

7.installair filtercoverand securewithfastener.Makesurethe fasteneris tight.

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