Mercury 250 Specifications download pdf (Page 49)

FEATURES AND CONTROLS

POWER TRIM OPERATION

With most boats, operating around the middle of the trim range will

give satisfactory results. However, to take full advantage of the

trimming capability there may be times when you choose to trim

your outboard all the way in or out. Along with an improvement in

some performance aspects comes a greater responsibility for the

operator, and this is being aware of some potential control hazards.

The most significant control hazard is a pull or torque that can be

felt on the steering wheel or tiller handle. This steering torque

results from the outboard being trimmed so that the propeller shaft

is not parallel to the water surface.

WARNING

Trimming the outboard beyond a neutral steering condition may

result in a pull on the steering wheel or tiller handle and loss of

boat control. Maintain control of the boat if trimming beyond a

neutral steering condition.

Consider the following lists carefully.

1. Trimming in or down can:

• Lower the bow.

• Result in quicker planing off, especially with a heavy load

or a stern heavy boat.

• Generally improve the ride in choppy water.

• Increase steering torque or pull to the right (with the normal

right hand rotation propeller).

• In excess, can lower the bow of some boats to a point

where they begin to plow with their bow in the water while

on plane. This can result in an unexpected turn in either

direction (called bow steering or oversteering) if any turn is

attempted, or if a significant wave is encountered.

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Mercury 250 Specifications Page 49