74
oh
MAINTENANCE
goh128
leading edge
Do Not sharpen or alter the top side lift-
ing angle
Sharpen to a 1/32 in. (.8mm) radius by removing material
from bottom side only
Enlarged View
omm1
Worn (Dull) Impeller
The intake of gravel through the pump can round off and wear the leading edges on
the impeller. Some conditions you may experience from a worn impeller are (1) a
noticeable performance loss, especially on acceleration, (2) difficultly getting the
boat on plane, or (3) an increase in engine RPM at wide open throttle. Check the
impeller blades occasionally for damage. Use a flat file to resharpen the leading
edges as shown.
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