Troubleshooting Chart - Yamaha DT125R Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
Troubleshooting charts
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1
Never check the fuel system while smoking or in the vicinity of an open flame.
2
1. Fuel
3
Check if there is fuel
in the fuel tank.
4
5
2. Compression
6
Use kick starter.
7
8
3. Ignition
9
Remove spark plug
and check electrodes.
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.
EAU03108
EW000125
Engine doesn't start, go to compression check.
Go to ignition check.
Ask a Yamaha dealer to
inspect.
6-40
Open throttle half-way and start
the engine.
Engine doesn't start, ask a Yamaha
dealer to inspect.