Before Each Use
Inspect the Battery Connections and
Hold-Downs
Because poor connections or hold-downs may result in
erroneous voltmeter readings, MasterCraft recommends
doing this before starting the 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.
Locate the bat-
tery. Batteries are placed in a variety of locations, de-
pending on the model. Check under the observer seat or
behind the rear seat.
Step 2:
Check that the battery post connections are
clean and tight. If not:
• Loosen and remove the negative terminal connec-
tion first. Be careful not to touch the positive terminal
with the wrench.
• Loosen and remove the positive terminal connection.
• Remove the battery hold-downs and remove the bat-
tery from the boat.
• Clean corrosion from the battery posts with a battery
terminal cleaner.
• Clean the battery with a water-and-baking-soda solu-
tion. Use care to avoid allowing the solution to enter
the battery vents. Rinse the battery with fresh water.
Battery electrolyte fluid is dangerous. It contains
sulfuric acid, which is poisonous, corrosive and
caustic. If electrolyte fluid is spilled or placed on
any part of the human body, immediately flush the
area with large amounts of clean water and imme-
diately seek medical attention.
• Use a battery terminal cleaning brush to remove cor-
rosion from the inside of the battery terminals. Clean
the terminals with a water-and-baking-soda solution
and rinse with fresh water.
• Check the battery box that normally holds the battery
in place to determine whether there is evidence of
battery fluid inside it. Battery fluids are corrosion and
can cause permanent damage to the battery box. If
fluid is evident, wash out the box with the water-and-
baking-soda solution as is used in cleaning the ter-
minals. Rinse with fresh water and dry with a cloth.
• Reconnect the positive terminal first, then the neg
-
ative. Tighten the terminals. Coat both terminals
completely with a thin covering of marine grease.
Be sure that the rubber boot covers the positive ter-
minal completely.
Note: Your boat’s engine is designed to work with
the standard electronics installed in your boat. Add-
ing other electrical components or accessories can
change the way the fuel injection controls the engine
or the overall electrical system functions. Before
adding electrical equipment, consult an authorized
MasterCraft dealer’s service department. Otherwise,
the engine may not perform properly.
Add-on equipment may adversely affect the al-
ternator output or overload the electrical sys-
tem. Such damage may not be covered by the
warranty.
scheduled
maintenance
2008 MasterCraft Owners Manual Page 15-1
scheduled
maintenance
