Yamaha F6 Owner's Manual

Also see for F8: Maintenance manual Maintenance Guide Owner's manual Operator's manual

Contents

Maintenance50It is advisable to have your outboard motorserviced by an authorized Yamaha dealer pri-or to storage. However, you, the owner, with aminimum of tools, can perform the followingprocedures.CAUTION:ECM01080 To prevent problems which can becaused by oil entering the cylinder fromthe sump, keep the outboard motor inthe attitude shown when transportingand storing it. If storing or transportingthe outboard motor on its side (not up-right), put it on a cushion after drainingthe engine oil. Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder through theexhaust port and cause engine trouble. Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.EMU28302ProcedureEMU28372Flushing in a test tank1. Wash the outboard motor body usingfresh water. For further information, seepage 53.2. Fill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” (Part No. LUB-FUELC-12-00) to each gallon of fuel.NOTE: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. Install the outboard motor on the testtank.5. Fill the tank with fresh water to above thelevel of the anti-cavitation plate.CAUTION:ECM00300Do not run the engine without supplying itwith cooling water. Either the engine waterpump will be damaged or the engine willbe damaged from overheating. Beforestarting the engine, be sure to supply wa-ter to the cooling water passages.CAUTION:ECM00290If the fresh water level is below the level ofthe anti-cavitation plate, or if the watersupply is insufficient, engine seizure mayoccur.6. Cooling system flushing is essential toprevent the cooling system from cloggingup with salt, sand, or dirt. In addition, fog-ging of the engine is mandatory to pre-vent excessive engine damage due torust. Perform the flushing and fogging atthe same time.1. Water surface2. Lowest water levelZMU0205112