Propeller Maintenance; Checking/Repairing Propellers; Changing Propellers - MasterCraft prostar 197, X-7 Owner's Manual

Propeller damage is caused by striking solid objects. If the pro-
peller is not rotating at the time it strikes a solid object, the damage
is usually confined to just one blade and may be difficult 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 shaft strut, parallel to the
shaft 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. There should be no more than
3/32-inch variance between the blades. If the propeller is
damaged, see an authorized MasterCraft dealer.
pr o pe l l e r m a i n t e n a n c e
2010
m ast e rc r a f t

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 shaft and propeller splines
for damage.
Step 5: Thoroughly clean and apply a light coat of waterproof ma-
rine multi-purpose grease to the splined area of the shaft
and propeller.
Step 6: Align the splines and carefully install the propeller onto
the shaft. DO NOT FORCE THE PROPELLER INTO
PLACE.
Step 7: Install the propeller nut and torque to 50-ft-lbs.
Step 8: Install a new cotter pin and bend the ends around the shaft
to lock the propeller on the shaft.
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