Maintenance Schedule; Maintenance Recommendations; Engine Maintenance; Checking The Spark Plug - Craftsman 247.77013.0 Operator's Manual

MAINTENANCE SCHEDULE
Before performing anytypeofmaintenance/service, disengage all
controls and stoptheengine. W aituntilall moving partshavecometo
a completestop.Disconnect sparkplugwireandgroundittoprevent
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 - 8 hours
25 hours
50 hours
Annuallyor 100 hours
BeforeStorage 1. Fuelsystem
Underheavyload or inhigh temperatures
1. Engineoil level
2. Looseor missinghardware
3. Unit and engine.
1. Engineoil
1. Engineoilt
2. Air cleaner
3. Controllinkagesand pivots
1. Engineoil
1. Sparkplug
= =
1. Check
2. Tightenor replace
3. Clean
1. Change
1. Change
2. Cleanor replace
3. Lubewith light oil
1. Change
1. Cleanand adjust gap,orelse
replacewith newplug.
1. Runengineuntilit stopsfrom lack of
fuelor add a gasolineadditiveto the
gasin thetank.
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
.020inch(.51ram)gap
Figure17
J
• Removeand inspectthe sparkplug.Checkgap to make sureit is
set at .020".See Figure17.
• Replacethe sparkplug if electrodesare pitted,burned,or the
porcelainis cracked.
16