Lubricate the Shift and Throttle System
Because this process should be completed while all movable com-
ponents of the drive train are NOT in motion, MasterCraft recom-
mends this be done while the boat is out of the water.
Step 1:
Ensure the engine is OFF and disconnect the engine
safety starting switch.
Be sure that the throttle/shift
control lever is in neutral.
The engine must be cool.
Step 2:
Open the engine box and locate the shift and throttle
cable ends.
Step 3:
Shift to full-throttle-forward.
Step 4:
Lubricate the cable ends and connections with a coat-
ing of waterproof marine multi-purpose grease.
Step 5:
Lubricate the pivots and linkages with a light grease.
Step 6:
Shift the control lever from full-throttle-forward to full-
throttle-reverse several times to work the lubricant in.
Check the Ballast Pump Impeller
This applies only to boats equipped with some type of ballast
system. The number of ballast pumps varies from system to system.
Authorized MasterCraft dealers can provide guidance to locate
any and all pumps.
Step 1:
Remove two (2) of the cover screws and retain the
screws for the reinstallation process. Swing the cover
out of the way to allow access to the impeller location.
Step 2:
Using needle-nose pliers, pull the old impeller out of
the casing.
Step 3:
Install a new impeller. (It is intentionally larger than
the case. While gently squeezing it in, ensure that the
paddle wheels angle in the same direction—counter-
clockwise—all the way around.)
Step 4:
Slide the plate back into place. No silicone is necessary.
Due to the built-in gasket, tightening the screws should
prevent leakage.
Inspect the Complete Fuel System
for Leakage
Although the boat engine is similar to an automobile engine, the
engine compartment differs substantially. The underside of an
automobile engine compartment is totally open to the atmo-
sphere. This allows complete air circulation and ventilation. A
boat engine is housed in a closed compartment, the underside of
which is the bottom (hull) of the boat.
The enclosed engine compartment limits the ventilation of
gasoline and oil fumes. Because confined gasoline vapors mixed
with a little air can form an explosive atmosphere, it is important
to be especially vigilant in performing the following two (2)
operations:
MasterCraft 2009 Owner’s Manual - Page 16-7
