NEW BOAT BREAK- IN
10-2
First Hour of Operation
Start the engine and allow the warm-up
to normal operating temperature (140 de-
grees F to 190 degrees F) at low idle (600 to
800 RPM).
Operate the boat in forward gear, ac-
celerate quickly, but gradually, to planing
speed. Then return the throttle back to
maintain a planing attitude. Vary the en-
gine speed, but do not exceed 2000 RPM
for the first hour. Carry only a light load.
Next Five Hours of Operation
Continue operation at plane and vary
the engine speed, but do not exceed 4000
RPM. Occasionally reduce the throttle
to idle speed for a cool-down period.
Carry only a light load.
Next Ten Hours of Operation
Operations during the final ten hours of
break-in is very much the same as the sec-
ond five hours, except that it is permis-
sible to run at full speed for 2-3 minutes at a time. Do not accelerate suddenly from low-to-full speed. Increase
speed gradually during this period. Again, an occasional cool-down period is recommended.
After the First 10 Hours of Operation
Return the boat to your MasterCraft dealer for the 10-hour inspection. At this time, your service technician
should change the engine oil and filter, as well as making other necessary checks, adjustments and services. The
oil change is particularly critical to long life and good service from your engine!
After Break-In
Once the break-in period is over, the boat may be operated continuously at any speed, but not beyond the
maximum. For the Predator engine that is 4800 RPMs; the MCX is 5200 RPMs, the LQ9 Cadillac is 5400 RPMs,
and the 8.1 Liter engine is 5400 RPMs as well.
Always remember that during normal operation you should allow the engine to warm up gradually. Be sure
the engine is warm before accelerating. Pay careful attention to the gauges and the Check Engine indicator. Also,
check the oil level frequently during the first 50 hours of operation since the piston rings and cylinders will
require that period to seat properly.
After the initial 50 hours of operation, the engine oil and filter must be changed. This second oil change is
very important to ensure a long and trouble-free engine life.
(Note that the engine manufacturer does not recommend using synthetic oils until at least 100 hours.)
After break-in, all maintenance is performed at regular intervals.
See the Scheduled Maintenance Checks and Services section for more details.
Failure to follow the engine oil recommendation listed in the
manual can cause additional engine wear and increase the possi-
bility of engine component failure. Damage to your engine due to
incorrect oil usage can be costly to repair, and is not covered by
your warranty!
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