GASOLINE STERNDRIVE INSTALLATION MANUAL
Page 6 of 137 90-860172011
Special Tools
Description Part Number
Transom Drilling Fixture 91-43693A2
Engine Alignment Tool 91-805475A1
Shift Cable Adjustment Tool 91-12427
Engine Mount Drilling Fixture 91-806794A1
Tapered Insert Tool 91-43579
Shift Shaft Slide Stabilizer Tool 91-809815A1
Alpha Notice: Increased Trim-In Range Capability
The Alpha trim cylinders provide the capability for an increased trim-in range. A spacer can
be removed from the trim cylinders to increase the trim-in range by approximately 1-1/2
degrees. This will improve the acceleration on some boats by forcing the bow down more
quickly. If the spacers are to be removed, the boat must be water tested to ensure that the
increased trim-in range does not cause any undesired boat handling characteristics
(bow-steer, chine-walk, etc.) if the sterndrive is trimmed in while the boat is operated at
higher speeds. The boat should be tested under all conceivable load conditions and
maneuvers to ensure that the additional trim-in does not pose a problem. The final decision
and responsibility for use of the additional trim-in range is left up to the boat manufacturer.
WARNING
It is recommended that only qualified personnel adjust the Trim-In Limit Spacer.
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 sterndrive unit is trimmed in at higher speeds. Increased
trim-in range may cause handling problems on some boats that could result in per-
sonal injury.
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