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OPERATION
MACHINE OPERATIONS AND CONTROLS
AFTER STARTING ENGINE
WARNING
Emergency stop
If there has been any abnormal actuation or trouble, turn the starting switch key to the OFF position.
Do not carry out operations or operate the levers or pedals suddenly while the hydraulic oil is at low temperature. Always carry
out the warm-up operation for the hydraulic equipment until the hydraulic oil temperature monitor is displayed green.
If the warm-up operation for the hydraulic equipment is not carried out thoroughly, and the machine is moved, the reaction of
the control levers and pedals will be slow and the movement may not be what the operator intended. Always warm up the
hydraulic equipment. In particular, in cold areas, always warm up the hydraulic equipment thoroughly.
There are two types of warm-up operation: warm up the engine and warm up the hydraulic equipment. In addition,
depending on the environment, the method of carrying out the warm-up operation may differ, so carry out the
warm-up operation according to the items given in the appropriate section.
(When only the engine is warmed up, the hydraulic equipment is not warmed up, so always carry out the warm-up
operation for the hydraulic equipment separately from the warm-up operation for the engine. Warm up the hydraulic
equipment thoroughly ensures that the hydraulic oil is warmed up and that warm hydraulic oil circulates in all the
control circuits.)
Breaking-in the New Machine
NOTICE
Your Komatsu machine has been thoroughly adjusted and tested before shipment from the factory. However, operating the
machine under full load before breaking the machine in can adversely affect the performance and shorten the machine life.
Be sure to break in the machine for the initial 100 hours (as indicated on the service meter).
Make sure that you fully understand the content of this manual, and pay careful attention to the following points when
breaking in the machine.
Run the engine at idle for 15 seconds after starting it. During this time, do not operate the control levers or fuel
control dial.
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.
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