Hitachi ZW 550-6 Operator's Manual page 224

2. Fully extend the bucket cylinder.
f
NOTE: Do not continuously operate the bucket control
lever for more than 10 seconds at a time. Do not bang
linkage when cold.
3. Slowly and fully retract the bucket cylinder.
f
NOTE: Do not continuously operate the bucket control
lever for more than 10 seconds at a time. Do not bang
linkage when cold.
4. Repeat steps 1 to 3 above until the loading linkage
speed is normal. When the air temperature is lower
than 0°C (32°F), extend the warm up time by running
the engine at about 1200~1500 min
f
NOTE: Headlights, working lights or room light may
become dim during engine preheating in the cold
environment.
OPERATING THE ENGINE
(RPM's).
-1
3-14