Trim In Pin - Mercury 150 Operation, Maintenance And Installation Manual

OUTBOARD INSTALLATION

Trim In Pin

Operating the boat at high speeds with the outboard trimmed too far under
can create excessive bow steer, resulting in the operator losing control of the
boat. Install the trim limit pin in a position that prevents excessive trim under
and operate the boat in a safe manner.
Some boats, particularly some bass boats, are built with a greater than normal
transom angle, which will allow the outboard to be trimmed further in or under.
This greater trim under capability is desirable to improve acceleration, reduce
the angle and time spent in a bow high boat during planing off, and in some
cases, may be necessary to plane off a boat with aft livewells, given the variety
of available propellers and height range of engine installations.
However, once on plane, the engine should be trimmed to a more intermediate
position to avoid a bow‑down planing condition called plowing. Plowing can
cause bow steering or oversteering and inefficiently consumes horsepower.
Stainless Steel Tilt Pin
The owner may decide to limit the trim in. This can be accomplished by
purchasing a stainless steel tilt pin from your dealer and insert it in whatever
adjustment hole in the transom brackets is desired. A nonstainless steel
shipping bolt should not be used in this application other than on a temporary
basis.
eng
WARNING
!
a - Tilt pin (not included with engine)
a
2688
2749
103
17‑49930A 1
Limits the down trim angle of the power
trim equipped engines, or aids in
determining the trim out angle on
non‑power trim engines.