engine immediately if the gauges and/or
video screen(s) indicate a problem. Low
oil pressure and overheating are serious
issues and require immediate attention.
• Abnormal vibration or noises. These
symptoms can be the rst signs of
trouble and should not be ignored. Oc-
casionally, hardware may work loose,
mountings may need to be tightened or
the driveline may require attention.
• Fuel, oil or water leaks. Leaks can pose
a serious safety threat. If one occurs, it is
quite 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. Following this specic instruc-
tion 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 speed.
First Hours of Operation
The rst hours of operation affect the
engine and drive train more than any oth-
er component on the boat. Therefore, it is
very important to follow EXACTLY the
break-in procedure as outlined in the en-
gine owner’s manual.
Engine manufacturers have detailed and
specic requirements for proper engine
break-in. That information is found in the
engine manual supplied, and must be fol-
lowed exactly as indicated. Failure to do so
could cause engine damage and/or failure
that is not covered under warranty.
After Break-In
Once the break-in period is over, the
boat may be operated continuously at any
speed, but not beyond the maximum indi-
cated in the engine owner’s manual.
The engines are equipped with rev-
limiters which will cause a uttering sound
when reached. If the boat has the correct
propeller set-up, operators should never
reach the limiter, but if that happens, it is
a signal that you should reduce the throttle
and check with an authorized MasterCraft
dealer to determine the cause.
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 at-
tention to the gauges and video screen(s).
Also, check the oil level frequently during
the rst fty (50) hours of operation since
the piston rings and cylinders require that
much time to seat properly.
See the Scheduled Maintenance Checks
and Services section for more details.
Failure to follow the engine oil recommen-
dations listed in the engine owner’s manual
can cause additional engine wear and in-
crease the possibility of engine component
failure. Damage to the engine due to incor-
rect oil usage can be costly to repair, and it
is not covered by the warranty!
Preparation • 2014 MasterCraft Owners Manual Page 5-9
P R E P A R A T I O N
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