Komatsu WA250PT-5H, Operation & Maintenance Manual

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Operation
OPERATION
Operations and checks after starting engine
3-70
Operations and checks after starting engine 0.
WARNING
Emergency stop
If the operation is abnormal or any other trouble occurs, turn the key in the starting switch to the OFF
position.
If the work equipment is operated without warming up the machine sufficiently, the response of the
work equipment to the movement of the control lever will be slow, and the work equipment may not
move as the operator desires, so always carry out the warming-up operation. Particularly in cold
areas, be sure to carry out the warming-up operation fully.
Breaking-in the machine 0.
CAUTION
Your Komatsu machine has been thoroughly adjusted and tested before shipment. However, operating
the machine under severe conditions at the beginning can adversely affect the performance and shorten
the machine life.
Be sure to break-in the machine for the initial 100 hours (as indicated by the service meter).
During breaking-in operations, follow the precautions described in this manual.
Idle the engine for 5 minutes after starting it up.
Avoid operation with heavy loads or at high speeds.
Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops,
and sudden changes in direction.
Normal operation 0.
After starting the engine, do not immediately start operations. First, carry out the following operations and checks.
NOTICE
Do not suddenly accelerate the engine before the warm-
ing-up operation is completed.
Do not run the engine at low idling or high idling continu-
ously for more than 20 minutes.
If it is necessary to run the engine at idling, apply a load
from time to time or run the engine at a mid-range speed.
1. Depress accelerator pedal (1) lightly and run the engine
with no load at midrange speed for about 5 minutes.