2008 Yamaha Motorsports Grizzly 450 4x4 Owners Manual - Page 156
2008 Yamaha Motorsports Grizzly 450 4x4 Manual
Page 156 highlights
EBU25771 Troubleshooting charts Starting problems or poor engine performance 1. Fuel There is enough fuel. Check the fuel level in the fuel tank. There is no fuel. Supply fuel. Check the compression. The engine does not start. Check the compression. 2. Compression There is compression. Operate the electric starter. There is no compression. Have a Yamaha dealer check the ATV. Check the ignition. 8 3. Ignition Wet Remove the spark plug and check the electrodes. Dry Wipe off with a dry cloth and correct the spark plug gap, or replace the spark plug. Open the throttle halfway and operate the electric starter. Have a Yamaha dealer check the ATV. The engine does not start. Check the battery. 4. Battery Operate the electric starter. The engine turns over quickly. The engine turns over slowly. The battery is good. Check the battery lead connections, and charge the battery if necessary. The engine does not start. Have a Yamaha dealer check the ATV. 8-61