Komatsu PC290LC-6K Operation & Maintenance Manual page 97

3. Set the safety lock lever
bucket from the ground.
4. (Mono Boom)
Operate bucket control lever
move the bucket cylinder and arm cylinder to the end of the stroke.
4-A (Two Piece Boom)
Left equipment control lever
This is used to operate the arm and swing.
Arm operation
Direction A
Direction B
Swing operation
Direction C
Direction D
N position (Neutral):
The swing and arm are stopped and held in the same position.
4-B (Two Piece Boom)
Right work equipment control lever
This is used to operate the boom and backhoe bucket.
Boom operation
Direction 1
Direction 2
Backhoe operation
Direction 3
Direction 4
N. Position (Neutral):
The boom and bucket are stopped and held in the same position.
Caution
Before starting the excavator, push the horn 5 on the control lever.
to the FREE position, and raise the
and arm control lever
: Arm OUT
: Arm IN
: Right swing
: Left swing
: 1 ST Boom RAISE
: 1 ST Boom LOWER
: Bucket DUMP
: Bucket CURL
slowly to
12. OPERATION
2-53