Diagnostic
Cause: Exhaust relief hole submerged due to engine trimmed full in while running at idle speed Test: Visually inspect whether the exhaust relief hole is above the waterline while engine is running at idle
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Ask Boat Guru about thisSpec · 650 RPM conditions={"note":"With engine fully warmed up"}
Procedure · 1. Check if the exhaust relief hole on the outboard is submerged when the engine is trimmed full in while running at idle speed. WARNING: Submerged exhaust relief hole may result in exhaust restriction, rough idle, ex...
Spec · 30 ml (1 fl oz) conditions={"application":"Storage"}
Procedure · 1. Remove the spark plugs to inspect. 2. Inspect the spark plug electrode for wear and the insulator for roughness, cracks, breaks, or blistering. Also check that precious metal is visible on the spark plug electrode....
Diagnostic · Cause: Spark plugs fouled or defective Test: Refer to Maintenance section