Operation
bow up, the boat may have a greater tenden- ating with excessive trim-in at higher speeds
cy to steer to one side or the other. Compen- also makes the boat unstable. Resistance at
sate for this as you steer. The trim tab can the bow is greatly increased, heightening the
also be adjusted to help offset this effect. danger of “bow steering” and making opera-
When the bow of the boat is down, it is easier tion difficult and dangerous.
to accelerate from a standing start onto
plane.
TIP:
Depending on the type of boat, the outboard
Bow Up
motor trim angle may have little effect on the
Too much trim-out puts the bow of the boat
too high in the water. Performance and econ-
omy are decreased because the hull of the
trim of the boat when operating.
EMU27934
Tilting up and down
boat is pushing the water and there is more If the engine will be stopped for some time or
air drag. Excessive trim-out can also cause if the boat is moored in shallows, the out-
the propeller to ventilate, which reduces per- board motor should be tilted up to protect the
formance further, and the boat may “por- propeller and lower casing from damage by
poise” (hop in the water), which could throw collision with obstructions, and also to re-
the operator and passengers overboard.
duce salt corrosion.
EWM00221
WARNING
Be sure all people are clear of the out-
board motor when tilting up and down,
Body parts can be crushed between the
motor and the clamp bracket when the
motor is trimmed or tilted.
EWM00250
WARNING
Leaking fuel is a fire hazard. If there is a
fuel joint on the outboard motor, discon-
nect the fuel line or close the fuel cock if
the engine will be tilted for more than a
Bow Down
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Oper-
48
| Categories | Marine, Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 25 |
| Model Year | 2008 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926 Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard |
| Document File Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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