Komatsu — OPERATIONS AND CHECKS AFTER STARTING ENGINE

OPERATION OPERATION STARTING IN COLD WEATHER After starting the engine, do not immediately start operations. First, carry out the following operations and checks. NOTICE Avoid abrupt acceleration until warm-up run is completed. Do not run the engine at low idling or high idling for more than 20 minutes. If it is necessary to run the engine at idling, apply a load or run at a medium speed from time to time. 1. Pull fuel control lever (1) to a position midway between the low idling and full speed positions, run the engine at a mid-range speed, and continue to run under no load for approx. 10 minutes. 2.

Operate blade control lever (3) fully to the RAISE posi- tion, then hold the lever in position, and operate slowly to the left tilt relief and right tilt relief in turn for 5 minutes. 3. After this, operate the blade control lever (3) fully to the RAISE position, hold the lever in position, and relieve the left and right tilt intermittently. Next, operate the lever to the LOWER position and lower the blade to the ground, then operate the lever fully to the FLOAT position, hold the lever in position, and relieve the left and right tilt in turn intermittently for 5 minutes. 4.

Lower the blade to the ground, operate the control lever fully to the FLOAT position (lever stroke end) and hold the lever in position by hand for 1 minute. Next, release the lever and check that it is held at the FLOAT position. After waiting for 3 minutes, return the lever to the HOLD position. REMARK If the work equipment oil is not up to operating temperature, the response of the work equipment or steering may be slow, the lever may become heavy or may not return properly. Also, if the blade control lever is set to the FLOAT position and released immediately, the lever may return to the HOLD position. 3-69