Specifications

NEW BOAT
The first 20 hours of operation are the most important
to your boat. Proper break-in will ensure maximum
performance and the longest possible power train life. The
break-in period allows moving parts within the engine and
transmission to wear-in properly. All MasterCraft boats
are lake-tested on the water before leaving the factory,
but the break-in must continue for the first 20 hours of
your ownership.
NOTE: Failure to follow the break-in procedure exactly
as stated will void the engine warranty!
NOTE: Before operating the boat for the first time you
must read the manual completely!
To ensure proper break-in and lubrication,
boat owners should not remove the factory
break-in oil until after the initial ten (10) hours
of operation. At that time, an oil change should be
performed by an authorized MasterCraft service
technician/your local MasterCraft dealer.
BREAK-IN
Please follow the break-in procedure carefully. Close
attention to the following is very important:
• Maintain the proper oil level. Until the piston rings,
cylinder and other working internal parts are thor-
oughly seated, oil consumption can be high and must
be carefully watched. The oil requirement is for SAE
15W40, AP SJ/CH4. If the specified oil is not
available, 20W40 oil may be substituted but only if it
meets the API SJ/CH4 standards.
• Pay close attention to the gauges. It is important to
stop the engine immediately if the gauges indicate a
problem. Low oil pressure and overheating are
serious issues and require immediate attention.
• Abnormal vibration or noises. These symptoms can
precede trouble and should not be ignored. Occasion-
ally, hardware may work loose, mountings may need
tightening or the driveline may require attention.
• Fuel, oil or water leaks. Leaks can pose a serious
safety threat. If one occurs, it is most likely to do so
after a few hours of operation.
• Vary the engine speed. Never run the engine for
more than three (3) minutes at any constant RPM
during the break-in period. Doing this will assist in the
proper break-in of rings and bearings.
• Plane the boat quickly. Operating the boat at low
speeds places an excessive load
on the engine. Plane quickly,
then back down to a slower
planing speed.
FIRST HOUR
OF OPERATION
Start the engine and allow the warm-
up to normal operating temperature
(140 degrees F to 190 degrees F) at
low idle (600 to 800 RPM).
Operate the boat in forward
gear, accelerate quickly, but
gradually, to planing speed. Then
return the throttle back to
maintain a planing attitude. Vary
the engine speed, but do not
exceed 2000 RPM for the first
hour. Carry only a light load.
2006 MasterCraft Owners Manual–Page 8-1