Yamaha F15D, Owner'S Manual, Page: 46 / 92

Operation
41
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-
ating with excessive trim-in at higher speeds
also makes the boat unstable. Resistance at
the bow is greatly increased, heightening the
danger of “bow steering” and making opera-
tion difficult and dangerous.
NOTE:
Depending on the type of boat, the outboard
motor trim angle may have little effect on the
trim of the boat when operating.
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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.
WARNING
EWM00220
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.
WARNING
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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
few minutes. Otherwise fuel may leak.
CAUTION:
ECM00241
●
Before tilting the outboard motor, stop
the engine by following the procedure
on page 37. Never tilt the outboard mo-
tor while the engine is running. Severe
damage from overheating can result.
●
Do not tilt up the engine by pushing the
tiller handle (if equipped) because this
could break the handle.
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Procedure for tilting up (manual tilt
models)
1. Place the gear shift lever in neutral.
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