Service And Maintenance; Maintenance Schedule; General Recommendations; Engine Maintenance - Craftsman 247.770131 Operator's Manual

MAINTENANCE SCHEDULE
Before performing anytype ofmaintenance/service, disengage all
controls and stoptheengine. W aituntilall moving partshavecometo
a completestop.Disconnect sparkplugwireandgroundit toprevent
unintended starting. A lwayswearsafetyglasses duringoperation or while
performing anyadjustments or repairs.
Followthe maintenance schedulegiven below.This chart describes
serviceguidelinesonly. Usethe ServiceLog columnto keeptrackof
completedmaintenance tasks.To locate the nearest Sears Service
Centeror to scheduleservice,simplycontactSearsat
1-800-4-MY-HOME®.
EachUse
1st5 hours
Annuallyor 25 hours
Annuallyor 50 hours
Annually
BeforeStorage
.
2.
3.
1.
1.
2.
3.
1.
1.
2.
1.
Engineoil level
Looseor missinghardware
Unit and engine.
Engineoil
Air cleaned-
Controllinkages/pivots and wheels
Undersideof mowerdeck
Engineoil
Sparkplug
Air Cleaner
Fuelsystem
Cleanmoreoften under dustyconditionsor whenairbornedebrisis
1. Check
2. Tightenor replace
3. Clean
1. Change
1. Clean
2. Lubewith light oil
3. Clean
1. Change
1. Replace
2. Replace
1. Runengineuntil it stopsfrom lack of
fuel, or add stabilizerto a full tank of
freshfuel prior to storage.
_resent.Replaceair cleanerif very dirty.
Alwaysstopengine and disconnectsparkplug wire beforeperforming
I anymaintenanceor adjustments. A lwayswear safetyglassesduring
_operation or whileperforminganyadjustmentsor repairs.
GENERAL RECOMMENDATIONS
• Alwaysobservesafetyruleswhenperforming
anymaintenance.
• Thewarrantyon this yardvacuumdoes notcover itemsthat have
been subjectedto operatorabuseor negligence. T o receivefull
valuefromwarranty,operatormustmaintaintheequipmentas
instructedhere.
• Someadjustmentswillhaveto be madeperiodicallyto maintain
yourunit properly.
• Periodically checkall fastenersand makesuretheseare tight.
ENGINE MAINTENANCE
Checking the Spark Plug
Cleansparkplug and reset theelectrodegap to 0.020"at leastonce a
season;replaceevery 100hoursof operation.
Cleanareaaroundthe spark plug base.Do not sandblastspark
plug.Sparkplug shouldbe cleanedby scrapingor wire brushing
and washingwith a commercialsolvent.
f
Electrode
Porcelain
.020 inch (.51 ram) gap
J
Figure17
Removeand inspectthe sparkplug.Checkgap to make sureit is
set at .020".See Figure17.
• Replacethe sparkplug if electrodesare pitted,burned,or the
porcelainis cracked.
16