Komatsu PC15MRX-1 Operation And Maintenance Manual page 189

MAINTENANCE
Air Bleeding
1. Fill the fuel tank with fuel (until fuel gauge (G) indicates
F).
2. Turn and keep the starting key to the ON position for 10
to 20 seconds.
Air is automatically bled by the automatic air bleeding
device.
3. Turn the starting key to the START position, and the
engine starts.
REMARK
This air bleeding procedure can also be applied when the fuel
has run out.
MAINTENANCE PROCEDURE
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