Craftsman 247.28883 Operator's Manual page 21

Spark Plug
1. Clean areaaround thespark plug base. D onot sandblast spark plug.
Spark plug should be creaned b yscraping o rwire brushing and
washing w ith a commercial solvent
2. Remove andinspect thespark p lug. Check gapto make sure itisset
at .030". S ee Figure 13.
Electrode Porcelain
.030 (.76 ram) gap
_,,,,, ...........
Figure13
3. Replace t hesparkplug(Champion® RC12YC) oncea season.
Muffler
i Temperature of muffler a nd nearby engine areasmayexceed 150"F
(65'C).Avoidcontact w iththeseareas.
• Inspect muffler periodically, and replaceif necessary. Replace-
rnent parts for the muffler must be the same and installedinthe
same position as the original parts.
Clean Engine
• Daily or beforeevery use, clean grass, chaff or accumulated
debris from engine. Keeplinkage, spring, and controls clean.
• Keep area around and behind muffler free of any combustibJe
debris.
• Keeping engine clean allowsair movementaround engine.
• Engine partsshould be kept clean to reduce the riskof overheat-
ing and ignitionof accumulateddebris.
system. U sea brushordrycloth.
Carburetor Adjustment
• Thecarburetor on thisengineisnotadjustable.
LUBRICATION
Beforelubricating, repairing, o rinspecting, always disengage PTO
(BladeEngage Lever), m oveshiftleverintoneutral p osition, s et
parkingbrake, s topengine and remove keyto prevent u nintended
starting.
Pivot Points & Linkage
Lubricate all thepivotpointson thedrivesystem, p arking brakeandlift
linkage at leastoncea season withlightoil.
Rear Wheels
Therearwheels shouldberemoved fromtheaxlesonce a season.
Lubricate the axlesandtherimsweftwith an all-purpose grease before
re-instaUing them.
Front Axles
Eachendof the tractor's front pivot bar may be equipped witha grease
fitting. Lubricatewith a grease gun after every 25 hours of tractor
operation.
Battery
The battery is sealed and is maintenance-free.Acid levels cannot be
checked.
• Always keepthe battery cables and terminalscleanand free of
corrosive build-up.
• Nter cleaning the battery andterminals, apply a lightcoat of
petroleumjefly or grease to both terminals.
• Alwayskeep the rubberboot positionedover the positive terminal
toprevent shorting.
IMPORTANT: If removingthe batteryfor any reason,disconnect the
NEGATIVE(Black) wire from itsterminalfirst, followedby the POSi-
TIVE (Red) wire. When re-installing t he battery,alwaysconnect the
POSITIVE (Red) wire to its terminalfirst, followed by the NEGATIVE
(Black) wire. Be certain that the wires are connected to the correct
terminals; reversingthem could changethe polarity and resultin
damage to your engine's aFternating syslem.
Cleaning Battery
Clean the battery by removing it from the tractorand washingwith
a baking soda and water solution, if necessary, scrape the battery
terminals with a wire brush to removedeposits. Coat terminalsand
exposed wiring with grease or petroleumjelly to prevent corrosion.
Battery Failures
Some commoncauses for batteryfailure are:
• Incorrect initial activation
• Overcharging
• Freezing
• Undercharging
, Corrodedconnections
Thesefailures are NOT covered by yourtractor's warranty.
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