Servicing The Air Cleaner; Checking The Spark Plug - Craftsman 247.889980 Operator's Manual

7. After theoil hasfinisheddraining,press thetwo tabs inwardand
pushthe oil drain valve backin to lock the valveclosed.Remove
the hose,and re-capthe end of the oil drain valveto keepdebris
from enteringthedrain port.
8. Refillthe enginewith new motoroil until theoil levelon the
dipstickreadsFULL.Replacethe oil fill cap/dipstick.
9. Pivotthe right handlebracetube back intoposition.Align the
middlehole in the bracetubewith the hole in the handle.Secure
with the star knoband carriagescrewremovedearlier.
Onlyuse high qualitydetergentoil ratedwith APIserviceclassification
SF or SG. Selectthe oil'sSAEviscosity gradeaccordingto your
expectedoperatingtemperature,Figure14.Althoughmulti-viscosity
oils (5W30,10W30etc.) improvestartingin cold weather,these multi-
viscosityoilswill resultin increasedoil consumption whenusedabove
32°RCheckyourengineoil levelmorefrequentlyto avoidpossible
enginedamagefrom runninglowon oil.
Oi!ViscositY Gila!! _j
Figure14
Checking the Spark Plug
Cleansparkplug and resettheelectrodegap to 0.030"at least oncea
season;replaceevery 100hoursof operation.
1. Cleanareaaroundthe spark plug base.Do notsandblastspark
plug.Sparkplug shouldbe cleanedby scrapingor wire brushing
and washingwith a commercialsolvent
2. Removeand inspectthe spark plug.Checkgap to makesureit is
set at .030".See Figure15.
Replacethespark plug if electrodesare pitted,burned,or the
porcelainis cracked.Usea Champion®RC12YC spark plug.
.
f
Electrode Porcelain "_
1 ;
_ .030 inch(.76 rnm)gap
Figure15
Servicing the Air Cleaner
If filters,or coversare notinstalledcorrectlyseriousinjury or death
could resultfrom backfire.Do not attemptto startthe enginewith
them removed.
Donot usepressurizedair or solventstoclean theair cleaner
cartridge.
Cleanor replacethe air cleanerevery25 hoursof operation.
1. Pullup on air cleanerhandle,Figure10,and pull backtowardsthe
engine.
.
f
Removethe air cleanercover,Figure16.
Air CleanerCover Air Cleaner Cartridge
\
AirCleanerHandle
-.. J
Figure16
3. Carefullyremoveair cleanercartridgeand pre-cleaner(if
equipped)fromthe blowerhousing.
4. Cleanthe baseof the air cleanercartridgecarefullyto prevent
debrisfrom enteringthe engine.
5. Placethe pre-cleaner, i f equipped,and cartridge backintothe
blowerhousing.The cartridgemustbe placedsecurelyinto
position.
6. Align tabs on cover with slotsin blowerhousingand replacethe
cover.
17