Troubleshooting charts -44, Periodic maintenance and adjustment, Troubleshooting charts – Yamaha YZFR1Y(C) User Manual

Page 99

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PERIODIC MAINTENANCE AND ADJUSTMENT

7-44

7

EAU42501

Troubleshooting charts

Starting problems or poor engine performance

Check the fuel level in
the fuel tank.

1. Fuel

There is enough fuel.

There is no fuel.

Check the compression.

Supply fuel.

The engine does not start.
Check the compression.

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

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.
Have a Yamaha dealer
check the vehicle.

The engine does not start.
Check the battery.

Operate the electric starter.

4. Battery

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.

Dry

Wet

Operate the electric starter.

U14B10E0.book Page 44 Friday, November 21, 2008 9:38 AM

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