Yamaha F50F Owner's Manual

Also see for F50F: Service manual Owner's manual Owner's manual Owner's manual Service manual

Contents

Maintenance52por separator for a prolonged period oftime will break down and could causedamage to the fuel line.EMU28302ProcedureEMU29953Flushing with the flushing attachment1. Wash the outboard motor body usingfresh water. For further information, seepage 55.2. Disconnect the fuel line from the motoror shut off the fuel cock, if equipped.3. Remove the top cowling and propeller.4. Install the flushing attachment over thecooling water inlet.CAUTION:ECM00300Do not run the engine without supplyingit with cooling water. Either the enginewater pump will be damaged or the en-gine will be damaged from overheating.Before starting the engine, be sure tosupply water to the cooling water passag-es.CAUTION:ECM00310Avoid running the outboard motor at highspeed while on the flushing attachment,otherwise overheating could occur.5. Cooling system flushing is essential toprevent the cooling system from clog-ging up with salt, sand, or dirt. In addi-tion, fogging/lubricating the engine ismandatory to prevent excessive enginedamage due to rust. Perform the flush-ing and fogging at the same time.WARNINGEWM00090 Do not touch or remove electrical partswhen starting or during operation. Keep hands, hair, and clothes awayfrom the flywheel and other rotatingparts while the engine is running.NOTE: When using the flushing attachment,maintain adequate water pressure and asteady water flow. If the overheat warning device is activated,turn the engine off, and consult yourYamaha dealer.6. Run the engine at a fast idle for a fewminutes in neutral position.7. Just prior to turning off the engine, quick-ly spray “Fogging Oil” alternately into theintake silencer or the fogging hole of thesilencer cover, if equipped. When prop-erly done, the engine will smoke exces-sively and almost stall.8. Drain the remained gasoline in the vaporseparator with a container. Loosen thedrain screw, and then remove the cap.Push in the air valve with a screwdriverto introduce air into the float chamber, sothat the gasoline will drain smoothly.Then, tighten the drain screw.1. Flushing attachment