2000 Yamaha Motorsports Big Bear 400 Owners Manual - Page 145
2000 Yamaha Motorsports Big Bear 400 Manual
Page 145 highlights
EBU00440 Troubleshooting chart There is fuel. 1. Fuel Turn the fuel cock to "OFF". Turn the fuel cock to "RES". Remove the fuel pipe. Check fuel flow. No fuel. Fuel cock clogged. E Check if there is fuel in the fuel tank. Some fuel. Restart engine. Clean fuel cock. No fuel. Supply fuel. 2. Compression Use the electric starter to see if there is compression. There is compression. Compression normal. No compression. Ask a Yamaha dealer to inspect. 3. Ignition Remove plug and check electrode. Wet Wipe clean with dry cloth. Spark good. Attach plug cap and ground to chassis. Use the electric starter. Ignition system normal. Dry Spark weak. Adjust plug gap or replace plug. 4. Battery Use the electric starter. Engine turns over quickly. Engine turns over slowly. No spark. Battery good. Check fluid, recharge, check connections. Ask a Yamaha dealer to inspect. 8-37