Craftsman 247.28933 Operator's Manual page 21

Spark Plug
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 Figure11.
f- -._
Electrode Porcelain
3. Replacethespark plug (Champion®RC12YC) o nce a season.
Muffler
o inspectmufflerperiodically, a nd replaceif necessary.Replace-
ment partsfor the mufflermustbe the sameand installedin the
same the oric
Temperature of mufflerand nearbyengineareasmayexceed 150 ° F
(65°0).Avoidcontactwith these areas.
Clean Engine
o 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.
Donot usewater to cleanengineparts.Watercouldcontaminate fuel
system.Use a brushor dry cloth.
Carburetor Adjustment
Thecarburetoron this engineis not adjustable.
LUBRICATION
Front Wheel Bearings
Lubricatethe front wheelbearingswith a No.2 multipurposelithium
greaseafter every 25 hoursof operation.The lubefittings are located
in the rimhub insideeachfront wheel.
Deck Spindles and Idler Bracket
Lubricatethedeck spindlesand idler bracketwith a No. 2 multipurpose
lithiumgreaseafter every 10hoursof operation.
• The deck spindlelube fittings are in the spindlehousings,and
can only be accessedfrom the undersideof thedeck.
• Lubricatetheidler bracketthroughthe lubefitting in the top of the
shoulderbolt. Usea pressuregreasegun to lubricatethe spindles
and idlerbracket.
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.
IVT Transmission
The IVT transmissionis sealedat the factoryand is maintenancefree.
The fluidlevelcannotbe checkedand cannotbe changed.Keepthe
area aroundthe transmissioncoolingfan freeof grass and debrisat all
times.
Steering
The steeringarms, pivotshafts,and axles mustbe lubricatedif ever
the steeringeffortincreases,or afterevery 25 hoursof operation.
Lubricateusinga pressuregreasegun and a No.2 multipurpose
lithiumgrease.
1. Applygreasethroughthe lube fittingon the RH and LH (right
handand left hand,from operator'sposition)steeringarms which
are locatedat rearwardend of the two steeringdrag links.See
Figure12.
f
Steering SteeringArm
LubeFitting
Tab
Axle Pivot Bar
21
Lubefittings
Figure12
Locatethe lube fittings forthe pivot shaftand axle on the front of
one end of theaxle pivot bar.Applygreasethroughthe two lube
fittings,then repeatto lubricatetheother endof the pivotbar.See
Figure12.