2006 Johnson SD 3.5 HP 2 Stroke Outboard Service Repair Manual, P/N 5006562, Page 140Get this manual

2006 Johnson SD 3.5 HP 2 Stroke Outboard Service Repair Manual, P/N 5006562, Page 140

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Running outboard too fast (Overspeeding)
This may happen if outboard runs too fast
Use the right test wheel
Running outboards: Exhaust fumes DANGER
DO NOT run the engine indoor