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DRIVE SYSTEM AND ENGINE INSTALLATION
3. Push down to secure.
Ensure that the speedometer tube is secured and out of the way of moving parts.
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.
On some boats, increased trim‑in range can cause handling problems at high speeds, resulting
in personal injury or death. We recommend that only qualified personnel adjust the trim‑in limit
inserts and test the boat for handling problems.
Alpha Trim Cylinder Spacer Removal
1. Disconnect "UP" trim hose from "UP" port on trim cylinder.
Page 48 / 54
b
a
a -
Male end of speedometer tube fitting
b
a
a -
Male end of speedometer tube fitting
b -
Female end of speedometer tube
fitting
8029
b -
Female end of speedometer tube
fitting
WARNING
!
SECTION - 6
4803
90-899883183 DECEMBER 2007
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