Komatsu — WARMING-UP OPERATION

MACHINE OPERATIONS AND CONTROLS OPERATION Warming-Up Operation 0. Be sure to warm up the engine after the engine is started in a cold temperature. Otherwise, the auto- matic stop position in the interference prevention device will likely shift. When checking the interference prevention device while in motion, operate the control levers slowly. NOTICE When the hydraulic oil is at a low temperature, do not carry out operations or move the lever suddenly. Always carry out the warming-up operation. This will help to extend the machine life. Do not suddenly accelerate the engine before the warming-up operation is completed.

Do not run the engine at low idling or high idling continuously for more than 20 minutes. (Oil down) 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. After starting the engine, do not immediately start operations. First, carry out the following operations and checks. 1. Pull fuel control lever (1) to the center position between LOW IDLING and HIGH IDLING and run the engine at medium speed for about 10 minutes with no load. REMARK When the ambient temperature is below 0єC (32єF), keep the fuel control lever close to the 1/4 position when warm- ing up the engine. 2.

Set safety lock lever (2) to the FREE position, and raise the bucket from the ground. 3-48 WARNING