2003 Yamaha Motorsports VMAX Owners Manual - Page 98

2003 Yamaha Motorsports VMAX Manual

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Page 98 highlights

PERIODIC MAINTENANCE AND MINOR REPAIR EAU03363 Troubleshooting charts Starting problems or poor engine performance EW000125 WARNING Keep away open flames and do not smoke while checking or working on the fuel system. @ @ 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 compressoin. 2. Compression There is compression. Check the ignition. Have a Yamaha dealer check the vehicle. 6 Operate the electric starter. There is no compression. 3. Ignition Remove the spark plugs and check the electrodes. Wet Wipe off with a dry cloth and correct the spark plug gaps, or replace the spark plugs. Open the throttle halfway and operate the electric starter. The engine does not start. Check the battery. Dry Have a Yamaha dealer check the vehicle. 4. Battery Operate the electric starter. The engine turns over quickly. The battery is good. The engine does not start. Have a Yamaha dealer check the vehicle. The engine turns over slowly. Check the electrolyte and battery lead connections, and charge the battery if necessary. 6-47

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-47
6
EAU03363
Troubleshooting charts
Starting problems or poor engine performance
EW000125
WARNING
@
Keep away open flames and do not smoke while checking or working on the fuel system.
@
Check the fuel level in
the fuel tank.
1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
Operate the electric starter.
2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.
3. Ignition
Wet
Dry
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the battery.
Open the throttle halfway and operate
the electric starter.
Operate the electric starter.
4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
Check the electrolyte and battery
lead connections, and charge the
battery if necessary.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the compressoin.