Boat porpoising (bouncing) or propeller ventilation

Related KB links

• Trim Tab: Trim tab adjustment effectiveness limit – antiventilation plate height above boat bottom

  Spec · 50 mm (2 in.) conditions={"note":"Trim tab adjustment will have little effect reducing steering torque if antiventilation plate is approximately 50 mm (2 in.) or more above the boat bottom"}

• Propeller Replacement

  Procedure · 1. Shift the outboard to the neutral (N) position. WARNING: Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed. Before installing or removing a pr...

• Propeller: Propeller selection target RPM

  Spec · Upper half of recommended full throttle RPM range conditions={"load":"Boat normally loaded","reference":"General Information – Specifications"}

• Trailering Boat/Outboard

  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...

• Engine overheating

  Diagnostic · Cause: Cooling water intake holes are above the waterline due to excessive trim-out