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1.
P
r
e-Clea
n
e
r
Ai
r
Filte
r
1.
2.
2.
Figure 30. Air Filter Service
REPLACE SPARK PLUG
Service Interval:
Yearly
Replacement Spark Plug:
5066
Spark Plug Gap:
.030” (.76mm)
1. Stop the engine and allow it to cool.
2. Clean the area around the spark plug.
3. Remove the spark plug.
4. Check the spark plug gap. It should be .030” (see
Figure 31).
5. Reinstall the plug into the cylinder head. Torque the
plug to 180 in. lbs (20 N.m.).
Figure 31. Spark Plug Gapping
Pre-Cleaner Service
NOTE: Replace a worn or damaged pre-cleaner.
1. Figure 30. Wash the pre-cleaner in liquid detergent
and water.
2. Squeeze the pre-cleaner dry and saturate with
engine oil. Remove all excess oil by squeezing the
pre-cleaner in an absorbent cloth.
Air Filter Service
NOTE: Replace a worn or damaged air filter.
1. Figure 30. If stamped “Washable,” the filter can be
washed with warm water and mild soap.
2. Rinse with tap water with the screen side UP allowing
dirt and debris to filter out.
3. Allow the filter to dry overnight before reinstalling.
Summary of Contents for 150Z 20HP
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