Hitachi ZW 120-6 Operator's Manual page 193

Adjustment Procedures
IMPORTANT: Do not operate the machine with the bucket
dumped more than 10°. Avoid applying great towing
force to the bucket cutting edge.
1. After moving the bucket to the desired digging angle,
stop the engine.
2. Loosen bolts (1) of the proximity switch mounting
bracket. Slide the end edge of leveler bar (2) up to the
center of the sensitive area (orange color). Then, tighten
bolts (1).
3. After adjustment start the engine. Check that the bucket
can be stopped at the preset angle position.
OPERATING MACHINE
5-7
1
2
M4FC-05-001