OPERATION OPERATION
3-94
OPERATIONS AND CHECKS AFTER STARTING ENGINE 3
WARNING
q If there has been any abnormal actuation or trouble, turn the starting switch key to the OFF position.
q If the work equipment is operated without warming the machine up sufficiently, the response of the
work equipment to the movement of the control lever will be slow and the work equipment may not
respond as the operator desires, so always carry out the warming-up operation. Particularly in cold
areas, be sure to carry out the warm-up operation completely.
BREAKING IN THE NEW MACHINE 3
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 break-in operations, follow the precautions described in this manual.
q Idle the engine for 5 minutes after starting it up.
q Avoid operation with heavy loads or at high speeds.
q Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops,
and sudden changes in direction.
WARMING UP OPERATIONS 3
NOTICE
Avoid abrupt acceleration until warm-up run is completed.
Do not run the engine at low idle or high idle for more than
20 minutes.
If it is necessary to run the engine at idle, apply a load or
run at a medium speed from time to time.
1. Turn fuel control dial (1) to the center position between
LOW IDLE (MIN) and HIGH IDLE (MAX) and run the
engine at medium speed for about 5 minutes with no load.
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