Komatsu PC22MR-3 Operation & Maintenance Manual page 107

Hydraulic excavator
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FUNCTIONING
The control lever (2) is positioned on the operator's left and
controls the arm and the turret swing.
q Swing function
(a) Swing to the right
(b) Swing to the left
q Arm
(c) Fold
(d) Extend
q N (Neutral): the turret and the arm are held in the position
where they stopped.
The control lever (3) is positioned on the operator's right and
controls the boom and the bucket.
q Boom
(e) Lift
(f) Lower
q Bucket
(g) Open
(h) Fold
q N (Neutral): the boom and the bucket are held in the
position where they stopped.
(4) Accelerator lever
This lever is used to control the engine speed and power.
(a) Minimum: push the lever completely forward.
(b) Maximum: pull the lever completely backward.
Use the accelerator with care, especially when the machine is
under strain or is working in difficult conditions. Avoiding
useless accelerations means reducing consumption and
extending the service life of both the engine and the machine.
(5) Blade control lever
It is used to control the movements of the blade.
(a) Lower
(b) Lift
REMARK
q When carrying out digging operations that require the
blade to be used for more than one hour without
interruption, pay attention to the engine coolant
temperature, since this may increase excessively.
q The translation speed selector switch is fitted on the lever
grip. For information on its operation, see "Travel speed
selection switch (3-12)".
WEAM014500
INSTRUMENTS AND CONTROLS
3-19

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