Page 6-32 2014 MasterCraft Owners Manual • Care and Maintenance
C A R E A N D M A I N T E N A N C E
for every thirty (30) seconds of
cranking. When the engine res,
keep a close watch over the gauge
readings and check for leakage
and abnormal noises. Keep speeds
lowfortherstfteen(15)min-
utes to allow the engine to reach
normal operating temperatures.
Propeller Maintenance
Propellerdamageiscausedbystriking
solidobjects.Ifthepropellerisnotrotating
at the time it strikes a solid object, the dam-
age is usually conned to just one blade
andmaybedifculttosee.Ifthepropeller
isrotatingwhenitstrikesanobject,usually
theresultingdamagecaneasilybeseenon
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: Rotatethepropellerslowly.There
should be no more than 3/32-inch
variance between the blades. If
the propeller is damaged, see an
authorized MasterCraft 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: Removethepropellernut.
Step 4: Tap the center hub of the propel-
ler with a rubber mallet to release
thepropeller.Inspecttheshaftand
propeller splines for damage.
Step 5: Thoroughlycleanandapplyalight
coat of waterproof marine multi-
purpose grease to the splined area
of the shaft and propeller.
Step 6: Alignthesplinesandcarefullyin-
stall the propeller onto the shaft.
DO NOT FORCE THE PRO-
PELLER INTO PLACE.
Step 7: Installthepropellernutandtorque
to50-ft-lbs.
Step 8:Installanewcotterpinandbend
the ends around the shaft to lock
the propeller on the shaft.
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