Craftsman 247.77246 User Manual download pdf (Page 13)

Alwaysstopengine,disconnectsparkplugwire,andgroundagainst

enginebeforeperformingany typeof maintenanceon yourmachine.

GENERAL RECOMMENDATIONS

• Alwaysobservesafetyruleswhenperformingany maintenance.

• Thewarrantyon thisedger/trencherdoesnotcoveritemsthat

havebeensubjectedto operatorabuseor negligence.To receive

full valuefromwarranty,operatormustmaintaintheequipmentas

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 ChampionRJ19LMsparkplug.

3. Checkthegap (A)witha wiregauge(B). SeeFigure11.Spark

pluggapshouldbe0.030in (0.76ram).if necessary,resetthe

gap.

4. installandtightenthe sparkplugto the recommendedtorque(180

Ib-in[20 Nm]).

5. Attachthe sparkplugcapto thesparkplug.

Air Cleaner

A dirtyaircleanerwill restrictairflowto the carburetorandcausepoor

engineperformance,inspectthe filtereachtimetheengineis oper-

ated.Youwill needto cleanthe filtermorefrequentlyif youoperatethe

enginein verydusty areas.

Cleantheair cleanerevery25hoursof operationoronce a season.

Replacetheaircleanerannually.

Neverstartor runthe enginewiththe aircleanerassemblyor theair

filterremoved.

NOTE:Do notuse pressurizedairor solventsto cleanthe filter.Pres-

surizedair can damagethefilterandsolventswill dissolvethefilter.

1. Removethescrew(A)fromthe top of the airfiltercover(B). See

Figure12.

2. Topreventdebrisfromfallingintothe carburetor,carefullyremove

the airfiltercover.

3. Removethefoamelement(C)fromthe airfilter base.

Figure11

Figure12

4. Washthe foamelementinliquiddetergentandwater.Squeeze

dry the foamelementin a cleancloth.

5. Saturatethe foamelementwithclean engineoil.To removethe

excessengineoil, squeezethe foamelementina cleancloth.

6. installthe foamelementinto theair filterbase.

7. installthe airfiltercoveronto theair filterbaseandsecurewith

screw.

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Craftsman 247.77246 User Manual Page 13

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