Maintenance754. Remove the top cowling and fogging holecap.5. Remove the propeller. For further infor-mation, see page 89.6. Install the outboard motor on the testtank.7. Fill the test tank with fresh water to abovethe level of the anti-cavitation plate.NOTICE: If the fresh water level is be-low the level of the anti-cavitationplate, or if the water supply is insuffi-cient, engine seizure may occur.[ECM00291]8. Start the engine, operate it for 10–15 min-utes at engine idle speed. WARNING!Do not touch or remove electricalparts when starting or during opera-tion. Keep hands, hair, and clothesaway from the flywheel and other ro-tating parts while the engine is run-ning. [EWM00091]9. Quickly spray “Yamaha Stor-Rite EngineFogging Oil” into the fogging hole of thesilencer. When properly done, the enginewill smoke excessively and stop.10. Remove the outboard motor from the testtank.11. Drain the cooling water completely out ofthe outboard motor. Clean the body thor-oughly.12. Install the fogging hole cap and top cowl-ing.13. Install the propeller. For further informa-tion, see page 89.1. Closed position1. Cap1. Water surface2. Lowest water level3. Cooling water inletZMU06871111ZMU068223ZMU06862ZMU06823
