Craftsman 247.28933 - Manual (Page 117)

SERVICE AND MAINTENANCE
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Spark Plug
1. Clean area around the spark plug base. Do not sandblast spark
plug. Spark plug should be cleaned by scraping or wire brushing
and washing with a commercial solvent
2. Remove and inspect the spark plug. Check gap to make sure it is
set at .030”. See Figure 11.
Electrode Porcelain
Figure 11
3. Replace the spark plug (Champion® RC12YC) once a season .
Muffler
• Inspect muffler periodically, and replace if necessary. Replace­
ment parts for the muffler must be the same and installed in the
same position as the original parts.
A warning
Temperature of muffler and nearby engine areas may exceed 150° F
(65°C). Avoid contact with these areas.
Clean Engine
• Daily or before every use, clean grass, chaff or accumulated
debris from engine. Keep linkage, spring, and controls clean.
• Keep area around and behind muffler free of any combustible
debris.
• Keeping engine clean allows air movement around engine.
• Engine parts should be kept clean to reduce the risk of overheat­
ing and ignition of accumulated debris.
A CAUTION
Do not use water to clean engine parts. Water could contaminate fuel
system. Use a brush or dry cloth.______________________________
Carburetor Adjustment
• The carburetor on this engine is not adjustable.
LUBRICATION
Front Wheel Bearings
Lubricate the front wheel bearings with a No. 2 multipurpose lithium
grease after every 25 hours of operation. The lube fittings are located
in the rim hub inside each front wheel.
Deck Spindles and Idler Bracket
Lubricate the deck spindles and idler bracket with a No. 2 multipurpose
lithium grease after every 10 hours of operation.
• The deck spindle lube fittings are in the spindle housings, and
can only be accessed from the underside of the deck.
• Lubricate the idler bracket through the lube fitting in the top of the
shoulder bolt. Use a pressure grease gun to lubricate the spindles
and idler bracket.
Pivot Points & Linkage
Lubricate all the pivot points on the drive system, parking brake and lift
linkage at least once a season with light oil.
Rear Wheels
The rear wheels should be removed from the axles once a season.
Lubricate the axles and the rims well with an all purpose grease before
re-installing them.
IVT Transmission
The IVT transmission is sealed at the factory and is maintenance free.
The fluid level cannot be checked and cannot be changed. Keep the
area around the transmission cooling fan free of grass and debris at all
times.
Steering
The steering arms, pivot shafts, and axles must be lubricated it ever
the steering effort increases, or after every 25 hours of operation.
Lubricate using a pressure grease gun and a No. 2 multipurpose
lithium grease.
1. Apply grease through the lube fitting on the RFI and LH (right
hand and left hand, from operator's position) steering arms which
are located at rearward end of the two steering drag links. See
Figure 12.
21
Locate the lube fittings for the pivot shaft and axle on the front of
one end of the axle pivot bar. Apply grease through the two lube
fittings, then repeat to lubricate the other end of the pivot bar. See
Figure 12.