OM 28Z3 US – Edition 2.0 * 28Z3b320.fm 3-9
Operation
3.4 Operating the excavator
Preheating / start switch: overview
Important!
The engine can only be started if the left-hand side control lever base is folded
down.
Throttle lever: overview
The throttle lever controls the engine speed as follows:
• Continuously (throttle lever 17)
1
0
2
3
Fig. 3: Preheating start switch
20
Position
Function Power consumer
0
Insert or remove the starting key None
1
ON/drive position
All functions are operational
➥ Indicator lights illuminate
➥ Shrill sound
2
Preheats the engine (10 – 15
seconds)
3
Starts the engine
➥ Starter is actuated
➥ Indicator lights must go out
Fig. 4: Revs control
17
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