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Troubleshooting Charts - Yamaha YZF-R3 2020 Owner's Manual

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Periodic maintenance and adjustment

Troubleshooting charts

Starting problems or poor engine performance
1. Fuel
Check the fuel level
in the fuel tank.
2. Battery
Operate the electric
starter.
7
3. Ignition
Remove the spark
plugs and check
the electrodes.
4. Compression
Operate the electric
starter.
There is enough fuel.
There is no fuel.
The engine turns over
quickly.
The engine turns over
slowly.
Wet
Dry
There is compression.
There is no
compression.
7-38
Check the battery.
Supply fuel.
The battery is good.
Check the battery
lead connections, and
have a Yamaha dealer
charge the battery if
necessary.
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.
Have a Yamaha dealer check the vehicle.
EAU63470
The engine does not
start.
Check the battery.
The engine does not
start.
Check the ignition.
Operate the electric
starter.
The engine does not
start.
Check the
compression.

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