Stern-Drive Trim Angle; Trim And Tilt/Trailering Switch - ILMOR One-Drive Owner's Manual

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SECTION 2

ILMOR ONE-DRIVE OWNER'S MANUAL

2-10

Stern-Drive Trim Angle

Trim angle is the angular relationship between the stern-drive and the

transom of the vessel. Vessel trim while underway greatly affects vessel

performance and efficiency. For best results, the vessel should be on plane

and trimmed to reduce the wet surface. With less vessel in the water, both

speed and fuel economy increase. The power trim should be adjusted

continuously for best results.

If the stern-drive is trimmed in "bow-down" too far (stern-drive is closer to

the transom), the speed drops, fuel economy decreases and the vessel may

not handle correctly. However, it does provide better acceleration from a

standstill, and because it forces the bow down, visibility is improved.

If the stern-drive is trimmed out "bow-up" too far (stern-drive is away

from the transom), steering torque may increase, the vessel may be difficult

to get on a plane and may bounce.

Raising and lowering of the stern-drive is controlled by the combination

trim and tilt/trailering switch.

The trim portion of the switch operates the trim system in either the "bow-

up" or "bow-down" directions.

The tilt portion (or trailering portion) of the switch operates the tilt system

for trailering, beaching, launching and shallow water operation (low-speed

below 1200 rpm).

A CAUTION! Never raise the stern-drive into the tilt/trailering range

when the engine is operating above 1200 rpm. Damage to the stern-

drive may result.

The switch is located on the remote control handle or on the vessel's dash

panel.

Single stern-drive applications will have one switch.

Dual stern-drive applications can have either one integral switch to operate

both stern-drives or may have a separate switch for each stern-drive.

A CAUTION! Always raise and lower dual stern-drives evenly

together. Damage to the tie bar connecting the two stern-drives

together could result from twisting or binding if the stern-drives are

raised or lowered separately.

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