Craftsman 77638 Chipper User Manual


 
Servicing the Air Cleaner f
Do notusepressurizedairor solventsto cleantheaircleaner
cartridge.
Theair cleanerpreventsdamagingdirt, dust,etc.,fromenteringthe
carburetorand beingforcedintotheengineandis importantto engine
life andperformance.Neverrunthe enginewithoutan aircleaner
completelyassembled.
Replacetheaircleanerevery25 hoursof operation.
1. Loosenscrewsthatholdthe airfiltercover.
2. Opencoverandremoveair filter.See Figure12.
3. Discardold airfilter.
4. Installnewairfilter.
5. Closethecoverandtightenscrews.
NOTE:Ifthe filteristornordamagedinanyway,replaceit.
Check Engine Oil
1. Checkoilbeforeeachuse.Stopengineandwaitseveralminutes
beforecheckingoil level.Withengineon levelground,the oil must
beto FULLmarkon dipstick.
2. Removeoilfill dipstickandwipecleanwithcloth.
3. Replaceandtightendipstick.Removeandcheckoil level.Level
shouldbeat FULLmark.
4. If needed,addoil slowly- recheck.Do notoverfill.
5. Wipedipstickclean,replaceandtighten.Removeandcheckoil
level.Oil levelshouldbe atFULLlineondipstick.
Donotoverfill.Overfillingwithoil maycausetheengineto notstart,or
hardstarting.If overthe FULLmarkon thedipstick,drainoilto reduce
oil levelto FULLmarkondipstick.
Change Engine Oil
* Onlyuse highqualitydetergentoil ratedwithAPIservice
classificationSF,SG, orSH.Selecttheoil's SAEviscositygrade
accordingto theexpectedoperatingtemperature.Refertoopera-
tion sectionforviscositychart.
, Changeengineoil afterthe first fiveto eighthoursofoperation,
andeveryfifty hoursoreveryseasonthereafter.Changeoil every
twentyfivehourswhenoperatingengineunderheavyloadorin
hightemperatures.
To Drain Oil
1. Drainthe fuelfromthe tankby runningthe engineuntilthefuel
tankis empty.
2. WithengineOFFbutstillwarm,disconnectsparkplugwire and
keepitawayfromsparkplug.
3over
_ J
Figure12
End Cap----_d_ _
J
Figure13
3. Removeoil drainendcap locatedat thebaseof the engine,and
drainoil intoanappropriatereceptacle.SeeFigure13.
Usedoil isa hazardouswasteproduct.Disposeof usedoil properly.
IDonotdiscardwithhouseholdwaste.Checkwithyour localauthori-
_tiesorSearsServiceCenterfor safedisposal/recyclingfacilities.
.
5.
Replaceandtightenthe oildrainendcap.
Whenengineisdrainedof all oil,placeenginelevel.Refillwith
approximately28oz.of freshoil. Fill toFULLlineondipstick.
Donotoverfill.Referto CheckEngineOil inthis SERVICE&
MAINTENANCEsection.
6. Replacesparkplugwire beforestarting.
15