Bravo three notice: trim-in limit pin, Warning, Notice on bravo trim-in limit – Mercury INSTALLATION MANUAL D7.3L D-TRONIC User Manual

Page 3

Advertising
background image

D7.3L D-TRONIC DIESEL ENGINES - BRAVO MODELS

Page 3 of 90

WARNING

Electrical system components on this engine are not external ignition protected.
DO NOT STORE OR UTILIZE GASOLINE ON BOATS EQUIPPED WITH THESE EN-
GINES, UNLESS PROVISIONS HAVE BEEN MADE TO EXCLUDE GASOLINE VA-
PORS FROM ENGINE COMPARTMENT (REF: 33 CFR). Failure to comply could re-
sult in fire, explosion and/or severe personal injury.

Notice on Bravo Trim-In Limit

NOTE:

Bravo One, Two and Three Models are equipped with a Trim-In Limit Pin Insert.

It has been brought to our attention that some boats (predominantly deep-V 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 drive 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 drive 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 Pin Insert reduces stern-lift by preventing the drive unit from reaching the

last few degrees of full trim-in. While this device should reduce the rolling tendency, it may

not eliminate the tendency entirely. The need for this Trim-In Limit Pin Insert, and its effec-

tiveness, 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 Pin Insert.
Boat must be water tested after adjusting or removing the device to ensure that the
modified trim-in range does not cause the boat to exhibit an undesirable boat handl-
ing characteristic if the drive unit is trimmed In at higher speeds. Increased trim-in
range may cause handling problems on some boats which could result in personal
injury.

Advertising