Operation
Bow Up
NOTE:
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
boat is pushing the water and there is more
air drag. Excessive trim-out can also cause
the propeller to ventilate, which reduces per-
formance further, and the boat may “por-
poise” (hop in the water), which could throw
the operator and passengers overboard.
Depending on the type of boat, the outboard
motor trim angle may have little effect on the
trim of the boat when operating.
EMU27933
Tilting up and down
If the engine will be stopped for some time or
if the boat is moored in shallows, the out-
board motor should be tilted up to protect the
propeller and casing from damage by colli-
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
bracket.
Bow Down
EWM00250
WARNING
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy Leaking fuel is a fire hazard. If there is a
and making it hard to increase speed. Oper- fuel joint on the outboard motor, discon-
ating with excessive trim-in at higher speeds nect the fuel line or close the fuel cock if
also makes the boat unstable. Resistance at the engine will be tilted for more than a
the bow is greatly increased, heightening the few minutes. Otherwise fuel may leak.
danger of “bow steering” and making opera-
ECM00241
tion difficult and dangerous.
CAUTION:
q
Before tilting the outboard motor, stop
the engine by following the procedure
41
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha F25D, Yamaha T25D |
| 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 |
(0 votes, average: 0 out of 5)