Troubleshooting Charts - Yamaha DT125R Owner's Manual

Troubleshooting charts

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Keep away open flames and do not smoke while checking or working on the fuel system.
1. Fuel
Check if there is fuel
in the fuel tank.
2. Compression
Use kickstarter.
3. Ignition
Remove spark plug
and check electrodes.
PERIODIC MAINTENANCE AND MINOR REPAIR
Enough fuel. Go to compression check.
No fuel. Supply fuel.
There is compression.
No compression.
Wipe clean with dry cloth and correct
Wet.
spark gap or replace spark plug.
Dry. Ask a Yamaha dealer to inspect.
Engine doesn't start, go to compression check.
Go to ignition check.
Ask a Yamaha dealer to
inspect.
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EAU03108
EW000125
Open throttle half-way and start
the engine.
Engine doesn't start, ask a Yamaha
dealer to inspect.
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