Engine (Power) Trim; Figure 3-18. Single Engine Trim Switch - Chris-Craft Lancer 20 Owner's Manual

Engine (Power) Trim

Each engine uses a trim switch
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
18). The dual engine trim switches are located near the dual engine throttles
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.
Chris-Craft
(Figure 3-18) which works in conjunction with the trim tabs and performs

Figure 3-18. Single Engine Trim Switch

Systems
(Figure 3-
(Figure 3-19).
3–21