SECTION 6 ILMOR MV8 OWNER’S MANUAL
6-2 © 5/2013 Ilmor Marine, LLC, Version 1.0
Although your Ilmor engine and V-drive and direct drive transmissions
may have been lake-tested by the boat manufacturer, the break-in period
is considered to have started when the retail consumer takes possession of
the boat and follows the instructions provided in this Owner’s Manual.
NOTICE: Do not remove the factory break-in oil until after a minimum of
10 hours proper operation, but not later than 25 hours. At that time, an
oil change should be performed by a certified Ilmor dealer, who will be
able to “read” the oil and filter to determine if the proper break-in of the
engine components appears to be occurring.
During the break-in period, maintain the correct oil level to ensure that
the internal aected components are well lubricated. Watch the gauges
on the instrument panel closely, as they are the rst line of defense. Well
before serious damage occurs to an engine, gauges can alert the operator to
circumstances that can lead to major damage.
Any abnormal vibrations or unusual noises may be symptomatic of
additional problems that are not registered by gauges or alarms. Do not
ignore them. Have a certied Ilmor dealer check out anything that seems
unusual. It may be a minor issue that requires a simple tightening of screws
or bolts, but it may also signal serious internal issues.
Plane the boat quickly, as low speeds can place more strain on the engine
operation. is does not mean to slam the throttle/shi control lever
forward; rather a steady, quick hand will help achieve the goal.
Adjusting and varying engine speeds can also help the engine during
break-in. Keeping the engine at a constant revolutions per minute (rpm)
for more than 3 or 4 minutes at a time places undue stress on the rings and
bearings inside the engine.
FIRST HOURS OF OPERATION
1. DANGER! Always open the engine compartment and check for
fumes, leaks or the presence of uids in the bilge and operate the
bilge blower for at least 4 minutes before starting the engine, and
always when at idle or slow-running speed. Start the engine and allow
it to warm up to the normal operating temperature range of 140°F
(60°C) to 190°F (87°C), depending on model. See Engine Specications
on page 11-1 for specic operating temperatures of each engine model.
is should be done in the idle (600 to 800 rpm as measured on the
tachometer) mode.
2. Move the throttle/shi control lever forward, smoothly and quickly, to
planing speed. en return the throttle back to a slower speed, but one
that continues the plane. Vary the engine speed but do not exceed 3,000
rpm for the rst hour, and carry only a light load. Aer the rst hour,
the rpm may not exceed 5,200 rpm for the 5.7L, 5,400 rpm for the 6.0L
and 6.2L, or 5,800 rpm for the 7.4L engines. Reduce the throttle/shi
control lever to idle (neutral) occasionally for a cool-down period.
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