Operation
61
F2.5A
F4B, F5A, F6C
3.
Change the position of the trim rod in di-
rection “A” to raise the bow (“trim-out”).
Change the position of the trim rod in di-
rection “B” to lower the bow (“trim-in”).
TIP:
The outboard motor trim angle changes ap-
proximately 4 degrees when the trim rod posi-
tion is changed by 1 hole.
4.
Make test runs with the outboard motor
set at different trim angles to find the po-
sition that works best for your boat and
operating conditions.
EMU40121
Adjusting boat trim
Generally, a boat is stable when the keel line
of the boat is up about 3 to 5 degrees. With
the bow up, the boat may have a greater ten-
dency to steer to one side or the other. If this
occurs, adjust the trim angle.
Bow Up
Too much trim-out puts the bow of the boat
too high in the water. Excessive trim-out can
also cause the propeller to ventilate, which re-
duces performance further, and the boat may
“porpoise” (hop in the water), which could
throw the operator and passengers over-
board.
Bow Down
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Resis-
tance at the bow is greatly increased, height-
ening the danger of “bow steering” and
making operation difficult and dangerous.
1. Trim rod
1. Trim rod
A
B
1
ZMU07372
ZMU06755
1
A
B
U6BV23E0.book Page 61 Tuesday, April 5, 2011 2:38 PM
