Hitachi ZW 120-6 Operator's Manual page 169

2. Run the engine at slow idle speed for more than 5
minutes.
f
NOTE: At this time, do not operate the engine in slow or fast
speed.
3. Slowly raise the bucket 1 m off the ground.
4. Slowly extend the bucket cylinder to stroke end.
f
NOTE: Do not continuously operate the control lever for
more than 10 seconds at this time.
5. Slowly retract the bucket cylinder to stroke end.
f
NOTE: Do not continuously operate the control lever for
more than 10 seconds at this time.
6. Repeat steps 4 to 5 above until the loader front
operating speed becomes normal. When the
atmospheric temperature is lower than 0 °C (32 °F),
extend the warming up operation time by running the
engine at middle speed.
OPERATING ENGINE
3-13