Performance Loss

Related KB links

• Propeller: Propeller selection target RPM

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

• Operating at High Elevations

  Procedure · 1. The engine automatically compensates for high elevation changes. No manual adjustment is required. 2. Consider fitting a different pitch propeller to help reduce normal performance loss resulting from reduced oxyge...

• Boat Transom / Outboard Mounting Locknuts and Bolts: Outboard Mounting Bolt Torque (Minimum Transom Holding Strength)

  Spec · 75 Nm conditions={"note":"Transom must not yield or crack under this torque; if it does, transom must be strengthened or load carrying area increased","equivalent_imperial":"55 lb-ft"}

• Compensating for power-robbing conditions

  Procedure · 1. Switch to a lower pitch propeller. 2. Change the gear ratio if available. 3. Prop the engine to allow it to operate at or near the top end of the recommended maximum RPM range at wide-open throttle with a normal bo...

• Performance Loss

  Diagnostic · Cause: Boat bottom is dirty or damaged