GASOLINE STERNDRIVE INSTALLATION MANUAL
90-860172011
Page 7 of 137
Bravo Three Notice: Trim-In Limit Insert
NOTE: Bravo One, Two and Three Models are equipped with a Trim-In Limit Insert.
It has been brought to our attention that some boats (predominantly deep-Vee heavy boats)
will roll up on their side under certain, specific, operating conditions. The roll can be either
to port or starboard and may be experienced while moving straight ahead, or while making
a turn. The roll occurs most frequently at or near maximum speed, with the sterndrive unit
trimmed at or near full trim-in. While the boat will not roll completely over, the roll may be
sufficient to unseat the operator or passengers, and thereby create an unsafe situation.
The roll is caused by stern-lift created from excessive sterndrive unit trim-in. Under these
extreme stern-lift / bow-down conditions instability can be created which may cause the boat
to roll. Weight distribution to the stern can reduce stern-lift and, in some circumstances, help
to control the condition. Weight distribution in the bow, port or starboard, may worsen the
condition.
The Trim-In Limit Insert reduces stern-lift by preventing the sterndrive unit from reaching the
last few degrees of full trim under. While this device should reduce the rolling tendency, it
may not eliminate the tendency entirely. The need for this Trim-In Limit Insert, and its
effectiveness, can only be determined through boat testing and is ultimately the
responsibility of the boat manufacturer.
WARNING
It is recommended that only qualified personnel adjust the Trim-In Limit Insert. Boat
must be water tested after adjusting the device to ensure that the modified trim-in
range does not cause the boat to exhibit an undesirable boat handling characteris-
tic if the sterndrive unit is trimmed In at higher speeds. Increased trim-in range may
cause handling problems on some boats which could result in personal injury.
Quicksilver Products
Accessories
Quicksilver gauges, remote controls, steering systems, propellers and other accessories
are available for this product. Mercury MerCruiser recommends the use of Quicksilver parts
on all applications. Refer to Mercury Precision Parts / Quicksilver Accessories Guide for a
complete listing.
This Guide is available from:
Mercury Marine
Attn: Parts Department
W6250 W. Pioneer Road
P.O. Box 1939
Fond du Lac, WI 54936-1939
Outside of U.S.A., order through Distribution Center or Distributor.
