Operation
results in less drag, greater stability and effi- Bow Down
ciency. This is generally when the keel line of Too much trim-in causes the boat to “plow”
the boat is up about 3 to 5 degrees. With the through the water, decreasing fuel economy
bow up, the boat may have a greater tenden- and making it hard to increase speed. Oper-
cy to steer to one side or the other. Compen- ating with excessive trim-in at higher speeds
sate for this as you steer. The trim tab can also makes the boat unstable. Resistance at
also be adjusted to help offset this effect. the bow is greatly increased, heightening the
When the bow of the boat is down, it is easier danger of “bow steering” and making opera-
to accelerate from a standing start onto tion difficult and dangerous.
plane.
NOTE:
Bow Up
Depending on the type of boat, the outboard
Too much trim-out puts the bow of the boat motor trim angle may have little effect on the
too high in the water. Performance and econ- trim of the boat when operating.
omy are decreased because the hull of the
EMU27931
boat is pushing the water and there is more
Tilting up and down
air drag. Excessive trim-out can also cause
If the engine will be stopped for some time or
the propeller to ventilate, which reduces per-
if the boat is moored in shallows, the out-
formance further, and the boat may “por-
board motor should be tilted up to protect the
poise” (hop in the water), which could throw
propeller and casing from damage by colli-
the operator and passengers overboard.
sion with obstructions, and also to reduce
salt corrosion.
EWM00220
WARNING
Be sure all people are clear of the out-
board motor when tilting up and down,
also be careful not to pinch any body
parts between the drive unit and engine
36
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 175D, Yamaha VZ150D, Yamaha VZ2002 |
| Model Year | 2005 |
| 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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