Yamaha RAPTOR YFM660R Owner's Manual

Also see for RAPTOR YFM660R: Course manual Owner's manual Owner's manual Owner's manual

Contents

Yamaha RAPTOR YFM660R Owner's Manual Manual pdf 388 page image

8-125EBU00724Troubleshooting chartStarting problems or poor engine performance1. FuelCheck if there is fuelin the fuel tank.There is fuel. Turn the fuel cocklever to “OFF”. No fuel. Fuel cock isclogged.Clean thefuel cock.Some fuel. Turn the fuel cocklever to “RES”. Restart the engine.No fuel. Supply fuel.2. CompressionUse the electricstarter to see ifthere is compression.There is compression. Compression normal.No compression. Ask a Yamaha dealer toinspect.3. IgnitionRemove thespark plug andcheck electrodes.Wet Wipe clean with dry cloth.Dry Attach spark plug cap andground to chassis.Use theelectric starter.Spark is good. Ignition system isnormal.Spark is weak.Adjust the spark plug gapor replace the spark plug.No spark.Ask a Yamaha dealer toinspect.4. BatteryUse the electric starter.Engine turns overquickly. Battery is good.Engine turns overslowly. Check the connections.Check thefuel flow.Turn the fuel cocklever to “ON”.Remove the fuel hosefrom the fuel cock.