Yamaha F2.5 Owner's Manual

Also see for F4: Owner's manual Brochure & specs Service manual Owner's manual Owner's manual

Contents

Maintenance74TIP:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system isto be drained instead.3. Remove the engine top cowling and si-lencer cover.4. Remove the propeller. For further infor-mation, see page 89.5. Install the outboard motor on the testtank.6. Fill the tank with fresh water to above thelevel of the anti-cavitation plate. NOTICE:If the fresh water level is below the lev-el of the anti-cavitation plate, or if thewater supply is insufficient, engineseizure may occur. [ECM00291]7. Run the engine at a fast idle for 10–15minutes in neutral position. 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]8. Just prior to turning off the engine, quicklyspray “Yamaha Stor-Rite Engine FoggingOil” alternately into each carburetor or thefogging hole of the silencer cover, ifequipped. When properly done, the en-gine will smoke excessively and almoststall.9. Remove the outboard motor from the testtank.10. Install the silencer cover/cap and topcowling.11. Drain the cooling water completely out ofthe motor. Clean the body thoroughly.12. Install the propeller. For further informa-tion, see page 89.F4, F61. Wash the outboard motor body usingfresh water. NOTICE: Do not spray wa-ter into the air intake. [ECM01840] For furtherinformation, see page 77.2. Fill the built-in fuel tank with fresh fuel andadd one ounce of “Yamaha Fuel Condi-tioner and Stabilizer” to each gallon of fu-el.TIP:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult a Yamaha dealer or oth-er qualified mechanic if the fuel system is tobe drained instead.3. When using a portable fuel tank, discon-nect the fuel hose, install the fuel jointcap, and then align the fuel cock with theclosed position.1. Water surface2. Lowest water level