Diagnostic
Poor performance at idle
Cause: Exhaust restriction due to exhaust relief hole being below the waterline Test: Verify exhaust relief hole is at least 25.4 mm (1 in.) above waterline with engine running at idle speed
Diagnostic
Cause: Exhaust restriction due to exhaust relief hole being below the waterline Test: Verify exhaust relief hole is at least 25.4 mm (1 in.) above waterline with engine running at idle speed
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Ask Boat Guru about thisSpec · 1 in conditions={"engine_state":"running at idle speed"}
Procedure · 1. Check whether the exhaust relief hole on the outboard is submerged when the engine is trimmed full in while running at idle speed. WARNING: If the exhaust relief hole becomes submerged, it may result in exhaust res...
Spec · 25.4 mm conditions={"engine_state":"running at idle speed"}
Procedure · 1. Use the mounting height chart (diagram 47710) to determine recommended mounting height based on anticipated maximum boat speed (MPH). The solid reference line (a) is the primary recommendation. 2. For dual outboard...
Diagnostic · Cause: Exhaust gas mixing with water over the propeller blades due to worn, loose, or damaged propeller bore sleeve Test: Inspect propeller bore sleeve when propeller is removed; check for wear, looseness, or broken r...