Trailering Outboard; Tilting Outboard Up And Down Manually; Trim "In" Angle Adjustment - Mercury 45 Jet 50-55 Service Manual

Trailering Outboard

WARNING
Excessive engine trim angle will result in insuffi-
cient water supply to water pump causing water
pump and/or powerhead overheating damage.
Make sure that water level is above gear housing
water intake holes whenever engine is running.
While operating "up" circuit, tilt ram will continue to tilt
outboard to full up position for trailering.
Tilting Outboard Up and Down
Manually
WARNING
Before loosening the manual release valve, make
sure all persons are clear of engine as engine will
drop to full "down" position when valve is loos-
ened.
With power trim installed, the outboard can be raised
or lowered manually by opening the manual release
valve 3 to 4 turns (counterclockwise).
a - Manual Release Valve
5C-2 - MID-SECTION

Trim "In" Angle Adjustment

Operating some boats with engine trimmed to the
full "in" trim angle [not using trim adjustment pin
(a)] at planing speed will cause undesirable and/
or unsafe steering conditions. Each boat must be
water tested for handling characteristics after en-
gine installation and after any trim adjustments.
IMPORTANT: Some boat/motor combinations,
that do not use the trim adjustment pin (a) and are
trimmed to the full "in" trim angle, will not experi-
ence any undesirable and/or unsafe steering con-
ditions during planing speed. Thus, not using
trim adjustment pin may be desired. However,
some boats with engine trimmed to the full "in"
trim angle at planing speed will cause undesir-
able and/or unsafe steering conditions. If these
steering conditions are experienced, under no
circumstances should the engine be operated
without the trim adjustment pin and without the
pin adjusted in the proper holes to prevent unsafe
handling characteristics.
Water test the boat not using the trim adjustment pin.
If undesirable and/or unsafe steering conditions are
experienced (boat runs with nose down), install trim
adjustment pin (a) in proper hole to prevent unsafe
handling characteristics.
a
50146
WARNING
a
90-8i7643R1 DECEMBER 1996
51057