Trim Motor 891736T

Function and technical context

The 891736T trim motor is part of the hydraulic trim and tilt system of the sterndrive propulsion units, being the electric actuator responsible for driving the hydraulic fluid that moves the trim piston. It works within the trim system of the Alpha Gen II and Bravo transmissions, regulating the angle of attack of the propeller with respect to the transom and allowing the unit to be raised or lowered out of the water when the boat is at rest. A failure in this component prevents adjustment of the trim during navigation, which has a direct impact on the hydrodynamic performance, fuel consumption and maneuverability of the boat; In severe cases, it may make it impossible to lift the propulsion unit to beach or transport the boat.

When to replace this part?

The most common symptoms of trim motor failure are loss of response to operating the trim button, slow or intermittent movement of the sterndrive unit, abnormal noises during the up or down cycle, or the inability to maintain the trim position once adjusted. It is recommended to inspect the electric trim motor during each seasonal maintenance, checking the condition of the terminals, the tightness of the assembly and the correct functioning of the associated hydraulic circuit. Replacing this component preventively at the first symptoms avoids being immobilized while sailing and prevents secondary damage to the hydraulic pump or the trim pistons.

MerCruiser Engine Compatibility