Maintenance
31
POTENTIAL HAZARD
• Charging the battery pr
oduces gasses.
WHAT CAN HAPPEN
• Battery gasses can explode.
HOW TO AV
OID THE HAZARD
• Keep cigarettes, sparks, and flames away
from the battery.
Servicing
the Spark Plugs
Check the spark plugs after every 200 operating
hours. Ensure that the air gap between the center and
side electrodes is correct before installing each spark
plug. Use a spark plug wrench for removing and
installing the spark plugs and a gapping tool/feeler
gauge to check and adjust the air gap. Install new
spark plugs if necessary.
Type: Champion RC12YC (or equivalent) Air Gap:
0.030 in. (0.76 mm)
Removing the Spark Plugs
1. Lower the loader arms and stop the engine.
Remove the key.
2. Pull the wires off of the spark plugs (Fig. 23).
3. Clean around the spark plugs.
4. Remove the spark plugs and metal washers.
m–3876
1
2
Figure 23
1. Spark
plug wire
2.
Spark plug
Checking the Spark Plugs
1. Look at the center of the spark plugs (Fig. 24). If
you see light brown or gray on the insulator, the
engine is operating properly. A black coating on
the insulator usually means the air cleaner is
dirty.
IMPORTANT: Never clean the spark plugs.
Always r
eplace the spark plugs when they
have a black coating, worn electrodes, an oily
film, or cracks.
2. Check the gap between the center and side
electrodes (Fig. 24).
3. Bend the side electrode (Fig. 24) if the gap is not
correct.
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