Komatsu D31EX-21, Operation & Maintenance Manual, Page: 217 / 256

MAINTENANCE
SERVICE PROCEDURE
4-37
EVERY 50 HOURS SERVICE 4
DRAIN WATER, SEDIMENT FROM FUEL TANK 4
Carry out this check before operating the machine.
q
Prepare a container to catch the fuel that is drained.
1. Open drain valve (1) at the bottom inside the inspection
cover on the left side at the rear of the machine and drain
the water and sediment accumulated at the bottom
together with fuel.
When doing this, be careful not to get fuel on yourself.
2. After clear fuel comes out, close drain valve (1).
Open
Close