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propeller maintenance
Propeller damage is caused by striking solid objects. If the pro-
peller is not rotating at the time it strikes a solid object, the dam-
age is usually conned to just one blade and may be dicult to
see. If the propeller is rotating when it strikes an object, usually
the resulting damage can easily be seen on all blades.
Checking/Repairing Propellers
Step 1: Ensure the engine is OFF and the emergency safety
stop switch is disconnected.
Step 2: Clamp a small rule scale to the sha strut, parallel to
the sha so that the end of the scale is 3/32-inches from
the leading edge of a propeller blade.
Step 3: Rotate the propeller slowly. ere should be no more
than 3/32-inch variance between the blades. If the
propeller is damaged, see an authorized MasterCra
dealer.
Changing Propellers
Step 1: Ensure the engine is OFF and the engine safety starting
switch is disconnected.
Step 2: Remove and discard the cotter pin.
Step 3: Remove the propeller nut.
Step 4: Tap the center hub of the propeller with a rubber mallet
to release the propeller. Inspect the sha and propeller
splines for damage.
Step 5: oroughly clean and apply a light coat of waterproof
marine multi-purpose grease to the splined area of the
sha and propeller.
Step 6: Align the splines and carefully install the propeller onto
the sha. DO NOT FORCE THE PROPELLER INTO
PLACE.
Step 7: Install the propeller nut and
torque to 50--lbs.
Step 8: Install a new cotter pin and bend
the ends around the sha to lock the
propeller on the sha.
MasterCraft 2009 Owner’s Manual - Page 18-1