Komatsu WA20-2, Operation & Maintenance Manual

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2-11
2. SAFETY LOCK (for directional lever)

WARNING
‡ When leaving the operator's compartment, set the safety lock
securely to the LOCK position. If the directional lever is not
locked, and this is touched by mistake, this may lead to a
serious accident.
‡ If the safety lock is not placed securely in the LOCK position,
the directional lever may not be properly locked. Check that
the situation is as shown in the diagram.
‡ When parking the machine or carrying out maintenance,
always lower the bucket to the ground and apply the lock.
This is used to lock the directional lever.
Push the knob to apply the lock.
3. WORK EQUIPMENT CONTROL LEVER
This lever is used to operate the lift arm and the bucket.
1 RAISE (
J
)
2 HOLD (
N
): The lift arm is kept in the same position.
3 LOWER (
M
)
4 FLOAT (
*
): The lift arm moves freely under external force.
A TILT (
U
)
B DUMP (
&
)
When the bucket is in the dump position, if the control lever is
pulled to the TILT position the control lever will stop at this position
and the bucket will continue to move.
When the bucket reaches the position set by the bucket positioner,
the control lever is automatically returned to HOLD and the bucket
stops.
If the lift arm is lowered from this point, the bucket will contact
the ground horizontally. If it is not horizontal, carry out adjustments.
For details, see “12.11 ADJUSTING WORK EQUIPMENT POSTURE”.
NOTICE
Do not use the FLOAT position when lowering the bucket.
11. EXPLANATION OF COMPONENTS 11. EXPLANATION OF COMPONENTS