Craftsman 247.28905 Manual Del Usuario página 21

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Spark
Plug
1.
Cleanareaaroundthe spark plug base.Do notsandblastspark
plug,Sparkplug shouldbe cleanedby scrapingor wire brushing
and washingwith a commercialsolvent
Removeand inspect t he spark plug.Checkgap to makesureit is
set at .030".See Figure15.
Electrode
Porcelain
_.030
(.76 mm) gap
\
Figure15
3.
Replacethespark plug (Champion®RC12YC) o nce a season.
Muffler
Temperature of mufflerand nearbyengineareasmayexceed 150 ° F
(65°0).Avoidcontactwith these areas.
inspectmufflerperiodically, a nd replaceif necessary.Replace-
ment partsfor the mufflermustbe the sameand installedin the
samepositionas the originalparts.
Clean
Engine
Dailyor beforeeveryuse, cleangrass,chaff or accumulated
debrisfromengine.Keeplinkage,spring,and controlsclean.
Keeparea aroundand behindmufflerfreeof any combustible
debris.
Keepingenginecleanallowsair movementaroundengine.
Engineparts shouldbe keptcleanto reducethe risk of overheat-
ing and ignitionof accumulated debris.
Do notuse waterto cleanengineparts.Watercouldcontaminatefuel
system.Use a brushor dry cloth.
Carburetor
Adjustment
Thecarburetoron this engineisnot adjustable.
LUBRICATION
Beforelubricating,repairing,or inspecting, a lwaysdisengagePTO
(Blade EngageLever),moveshift leverinto neutralposition,set
parkingbrake,stopengine and removekey to preventunintended
starting.
Pivot Points
& Linkage
Lubricateall the pivot pointson the drivesystem,parkingbrakeand lift
linkageat leastonce a seasonwith lightoil.
Rear Wheels
The rear wheelsshouldbe removedfrom theaxles oncea season.
Lubricatetheaxles and the rims wellwith an all-purposegreasebefore
re-installing them.
Front Axles
Eachend of thetractor'sfront pivotbar maybe equippedwith a grease
fitting. Lubricatewith a greasegun after every 25 hoursof tractor
operation.
Battery
The batteryis sealedand is maintenance-free. Acidlevelscannot be
checked.
Alwayskeepthe batterycablesand terminalscleanand free of
corrosivebuild-up.
After cleaningthe batteryand terminals,applya lightcoat of
petroleum jelly or greaseto bothterminals.
Alwayskeepthe rubberbootpositionedoverthe positiveterminal
to preventshorting.
iMPORTANT: if removingthe batteryfor any reason,disconnectthe
NEGATIVE (Black)wirefrom its terminalfirst, followedby the POSI-
TIVE (Red)wire.When re-installing the battery,alwaysconnectthe
POSITIVE (Red)wire to its terminalfirst, followedbythe NEGATIVE
(Black)wire. Be certainthat the wiresare connectedto the correct
terminals;reversingthemcouldchangethe polarityand result in
damageto yourengine'salternatingsystem.
Cleaning
Battery
Cleanthe batteryby removingit from the tractorand washingwith
a bakingsodaand watersolution.If necessary,scrapethe battery
terminalswith a wirebrushto removedeposits.Coatterminalsand
exposedwiringwith greaseor petroleum jellyto preventcorrosion.
Battery
Failures
Somecommoncausesfor batteryfailureare:
incorrectinitialactivation
Overcharging
Freezing
Undercharging
Corrodedconnections
These failuresare NOTcoveredbyyourtractor'swarranty.
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