Diagnostic
Boat porpoising (bouncing) or propeller ventilation
Cause: Excessive trim-out (trim up) condition Test: Reduce trim angle and observe whether porpoising and ventilation cease
Diagnostic
Cause: Excessive trim-out (trim up) condition Test: Reduce trim angle and observe whether porpoising and ventilation cease
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Ask Boat Guru about thisSpec · First 20° conditions={"operation":"On plane while boat is operating"}
Procedure · 1. Trailer your boat with the outboard tilted down in a vertical operating position. WARNING: Do not rely on the power trim/tilt system or tilt support lever to maintain proper ground clearance for trailering. The out...
Spec · 50–100 RPM conditions={"upgrade":"3-blade to 4-blade"}
Procedure · 1. Flush the internal water passages of the outboard with fresh water after each use in salt or polluted water to prevent deposit buildup from clogging water passages. Refer to Maintenance – Flushing the Cooling Syste...
Diagnostic · Cause: Excessive trim-in (trim under) causing the bow to plow into the water; unexpected turn can occur when any turn is attempted or a significant wave is encountered Test: Check trim angle; install stainless steel t...