Specifications

2005 MASTERCRAFT OWNERS MANUAL–PAG E 16-4
INSPECT THE THROTTLE AND
SHIFT CABLES FOR KINKS, WEAR
AND INTERFERENCE (RPT-1 ONLY)
Because this process should be completed
while the engine is cool and cannot cause
burns to your skin, we recommend you do this
before starting your boat.
Step 1: Ensure the engine is OFF and the
engine safety starting switch disconnected.
Be certain that the throttle/shift control lever
is in neutral.
Step 2: Open the engine compartment and lo-
cate the throttle and shift cables. Follow each
cable back under the floorboards and feel for
any kinks and wear on the outer jacket. Any
sign of cable damage is cause for replacement.
See your MasterCraft dealer.
BEFORE BEFORE
BEFORE BEFORE
BEFORE
USE
USE USE
USEEACH
USE
(if the engine has shown evidence of overheating during the previous outing. If
overheating occurs during an outing, checking the impeller is imperative!)
CHECK THE IMPELLER
Because this process should be completed while the engine is cool and cannot cause
burns to your skin, we recommend you do this before starting your boat. If checking
during an outing, allow the engine to cool some before checking and be very careful to
avoid burns from contact with hot engine parts.
Step 1: Ensure the engine is OFF and the engine safety starting switch disconnected. Be
certain that the throttle/shift control lever is in neutral. Open the engine compartment and
locate the raw water impeller housing.
Step 2: Disconnect the intake and outflow hoses on the raw water impeller housing to check for
debris. Reconnect.
Step 3: Remove the screws on the impeller cover and very carefully break the gasket seal. Because a
good seal is very important to avoid potentially serious leaks while the engine is in operation, it is
advisable to have some new gaskets in the boat’s glovebox for such occasions. If even a slight gap
exists, you may experience problems in the future, so replacing the gasket is a better idea than taking
any chances with an old one. Also, leaving any portion of the old gasket on the housing or cover can
impede good contact.
Ignoring elevated temperatures on a temperature gauge or any other evidence of the
engine operating at temperatures above recommended levels can result in serious damage
to the engine. Any resulting damage will not be covered by, and may void, your warranty!
Step 4: Inspect the inside of the impeller housing. The paddle-wheel should appear as it does
in this photograph. If any rubber extrusions on the end of the arm appear frayed or worn, it
should be replaced. If there is not a slight bend to the paddle-wheel arms, replace it. Debris
entering the impeller inevitably will damage it; but it serves its purpose in keeping debris out
of much more expensive internal engine parts.