Craftsman 247.37683 0.028-.030 in. Gap (0.70-0.80mm)

Alwaysstopengine,disconnectsparkplugwire,andgroundagainst

enginebeforeperforminganytypeof maintenanceon yourmachine.

GENERAL RECOMMENDATIONS

•Alwaysobservesafetyruleswhenperforminganymaintenance.

• The warrantyonthis lawnmowerdoesnot coveritemsthat have

beensubjectedtooperatorabuseor negligence.Toreceivefull

valuefromwarranty,operatormustmaintaintheequipmentas

instructedhere.

• Changingofengine-governedspeedwillvoidenginewarranty.

• All adjustmentsshouldbecheckedatleastonce eachseason.

• Periodicallycheckall fastenersandmakesuretheseare tight.

ENGINE MAINTENANCE

Spark Plug

NOTE:incorrectsparkplugscan causeenginedamage.

Electrode SealingWasher

0.028-.030 in. Gap(0.70-0.80mm)

Figure12

Forgoodperformance,thesparkplug mustbeproperlygappedand

freeofdeposits.Check thesparkplug every50 hoursor oncea

season.Replacethesparkplugevery200 hoursof operation.

1. Disconnectthe cap fromthe sparkplug, andremoveany dirt from

thesparkplug area.

2. Usethe propersizesparkplugwrenchtoremovethe sparkplug.

3. inspectthe sparkplug. Replaceit if damaged,badlyfouled,ifthe

sealingwasherisin poor condition,or if theelectrodeis worn.

4. Measuretheelectrodegapwitha suitablegauge.Thecorrect gap

is0.028- 0.030in. (0.70-0.80 ram).See Figure12.Ifadjustment

isneeded,correctthe gap by carefullybendingtheside electrode.

5. installthe sparkplugcarefully,byhand,toavoidcross-threading.

6. Afterthespark plug is seated,tightenwiththe propersize spark

plugwrenchto compressthe washer.

Wheninstallinganewspark plug,tighten 1/2turn afterthespark plug

seatstocompressthe washer.

Whenreinstallingtheoriginalsparkplug,tighten 1/8-1/4turnafterthe

sparkplugseatsto compressthe washer.

NOTE:Properlytightenthesparkplug.A loose sparkplugcan become

veryhotand candamagetheengine.Overtighteningthesparkplug

candamagethethreadsin the cylinderhead.

7. Attachthe sparkplugcapto thespark plug.

Air Cleaner

Adirty air cleanerwill restrictair flowto the carburetorandcausepoor

engineperformance,inspectthe filter eachtime theengine is oper-

ated.Youwill needto cleanthe filter morefrequentlyif youoperatethe

engineinverydusty areas.

Cleantheair cleanerevery25 hoursof operationoronce a season.

Replacetheaircleanerevery200 hoursof operation.

NOTE:Operatingtheenginewithoutafilter, or withdamagedfilter,will

allowdirtto enter the engine,causingrapidenginewear.

Inspection

1. Pressthelatchtabs onthetop oftheair cleanercover,and

removethecover.Checkthefilterto be sureitis clean and in

goodcondition.SeeFigure13.

2. Reinstallthefilterandair cleanercover.

Cleaning

1. Tapthefilter severaltimesona hard surfaceto removedirt,or

blowcompressedairnotexceeding30psi throughthefilter from

thecleanside that facestheengine.Nevertry to brushoff dirt.

Brushingwillforcedirt intothe fibers.

2. Wipedirt fromthe air cleanerbody andcover usinga moist rag.

Becarefulto preventdirtfrom enteringtheair duct thatleads to

thecarburetor.