Operating Instructions - Doosan DX220A Operation And Maintenance Manual

OPERATING INSTRUCTIONS

Engine Speed Control
Engine speed can be manually adjusted using the engine speed
control dial, Increase engine speed by rotating the control knob
clockwise. Decrease engine speed by rotating the control knob
counterclockwise.
IMPORTANT
The engine speed control system has been set at the
factory and should not require adjustment as part of routine
maintenance.
If the engine speed control system should have an electrical
malfunction, the engine throttle system can be set for manual
operation. Use the following procedure;
IMPORTANT
If the engine rpm is being manually adjusted, the equipment
will not function in its optimum capacity. Please contact a
DOOSAN distributor or service center for repairs.
1. Park on firm, level ground.
2. Lower bucket to ground.
3. Set safety lever on "LOCK" position.
4. Set engine speed control dial to "LOW IDLE." Allow engine
to idle for 3 - 5 minutes.
5. Shut down engine. Remove key from starter switch.
6. Attach tag, "DO NOT START" on right-hand work lever
(joystick).
7. Disconnect control cable (1, Figure 41) by removing nut
and spring washer (2) and loosening the nuts (3) holding
cable to bracket.
8. Remove nut and spring washer (5, Figure 41) from manual
engine control cable (4) and loosen the nuts (10) holding
cable to bracket. Attach manual engine control cable ball
joint to hole (6) by using nut and spring washer (5) and
attach it to slot (11) by tightening the nuts (10).
9. Start the engine.
10. Display the engine rpm on the instrument panel by
pressing the "DISPLAY" button.
Operation
3-20
Figure 39
Figure 40
HAOA690L
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OP001761