Chris-Craft Launch 22 Owner's Manual download pdf (Page 83)

Systems

Chris-Craft 3–21

Engine (Power) Trim

Each engine uses a trim switch (Figure 3-18) which works in conjunction with the trim tabs and performs

the following functions:

• Moves the sterndrive(s) angle up or down to provide optimum running conditions.

• Allows the boat to come up on plane more quickly and efficiently.

• The power trim also allows the sterndrive(s) to be fully raised so that the boat may be trailered or un-trailered

without damaging the sterndrive/propeller.

The single engine trim may be located either on the throttle or on or near the helm switch panel (Figure 3-

18). The dual engine trim switches are located near the dual engine throttles (Figure 3-19).

When using the engine trim, keep the following in mind:

• Avoid a bow-down condition. This is known as “plowing” which can result in unintentional consequences. Read-

just trim to correct this condition.

• Avoid a bow-up condition. This is known as “porpoising” or “propeller ventilation.” This condition creates an

unsafe propeller speed which may damage the engine(s). Reduce engine RPM and readjust trim to correct this

situation.

• When attempting to come up on plane, always start with the sterndrive(s) down.

Figure 3-18. Single Engine Trim Switch

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Chris-Craft Launch 22 Owner's Manual Page 83