Specifications

UNSCHEDULED
Propeller damage is caused by striking solid objects. If
the propeller 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 damage can easily be seen on
all blades.
CHECKING/REPAIRING PROPELLERS
Step 1: Ensure the engine is OFF and the engine safety
starting switch disconnected. Place the throttle/shift
control lever in forward gear.
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 your MasterCraft dealer.
To repair minor nicks and dings in a propeller
(MasterCraft makes no claims to this methodology)
Step 1: Remove the propeller from the boat.
Step 2: Use a small ball-peen hammer and anvil to
carefully straighten out the ding to the original contour of
the blade.
Step 3: File the area to remove rough edges.
MAINTENANCE
2006 MasterCraft Owners Manual–Page 18-1
Step 4: Re-install as outlined in Changing Propellers
instructions. If a vibration is detected, have the propeller
replaced. Do not use a propeller that is the source of a
vibration. Further drive-train damage could result and
this will not be covered under warranty.
CHANGING PROPELLERS
Step 1: Ensure the engine is OFF and the engine safety
starting switch disconnected. Place the throttle/shift
control lever in forward gear.
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 water-
proof marine 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 IN 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.
CHECKING
SPEEDOMETER CALIBRATION
For tournament use and practice, accurate speedom-
eter readings are a must. To calibrate the speedometer
you need an accurately measured course of 850 feet and
a certified stopwatch accurate to a thousandth of a second.
To calibrate to AWSA official-tournament rules:
Step 1: Approach the course at an indicated 36 miles
per hour (MPH). Hold the speed steady and have an
observer check the course time with a stopwatch.
Step 2: If the course time is between 15.88 and 16.28
seconds, no adjustment is necessary. If the course time is
not within tolerance, the adjustment switch is on the lower
right panel of the dash.