Adjustment - Komatsu PC450-8 Operation & Maintenance Manual

OPERATION
Check Function of Horn
1. Turn the starting switch to the ON position.
2. Confirm that the horn sounds immediately when the horn
button is pressed.
If the horn does not sound, contact your Komatsu distribu-
tor for repair.

Adjustment

Seat Adjustment
When adjusting the position of the operator's seat, always set the lock lever to the LOCK position to pre-
vent any accidental contact with the control levers.
q
Always adjust the operator's seat before starting each operation or when the operators change shift.
q
Adjust the operator's seat so control levers and switches can be operated freely and easily with the operator's
back against the backrest.
(A) Fore-and-aft adjustment
Pull lever (1) up, set the seat to the desired position, then
release the lever.
Fore-and-aft adjustment: 160 mm (16 stages)
(B) Adjusting reclining
REMARK
The seat can be reclined more when the seat is pushed to the
front. The amount of reclining decreases as the seat is pushed
back, so when moving the seat back, return the seat back to
the upright position.
Pull up lever (2) and set the backrest to a position that is com-
fortable for operation, then release the lever.
Sit with your back against the seat backrest when adjusting. If
your back is not against the backrest, the backrest may sud-
denly move forward.
(C) Adjusting seat tilt
MACHINE OPERATIONS AND CONTROLS
WARNING
3
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