OPERATION & MAINTENANCE MANUAL SWDE120B-3
2.5 STARTING SWITCH
The key switch is used to turn on/off the engine, mainly including three working
positions:（OFF）,（ON）and（START）.
OFF: Key can be inserted or pulled out. The position can cut off the power of all
electrical systems except the cab lights, and stop the engine.
ON: The position enables all electrical system to be
connected. When the engine is running normally, the start
switch should always be in this position. If abnormal, check
the electrical system immediately.
START: The starting position of the engine. When
starting the engine, keep the key in the position.
★ Notice: After the engine starts, release the key
immediately, and the starting switch will automatically return
to ON.
2.6 THROTTLE CONTROL KNOB
Throttle Control Knob is to control engine rev and output power.
（a）low idle speed：
（b）high idle speed：
When control button clockwise rotates from “a” to “b”，engine rev is advanced;
When control button anti-clockwise rotates from “b” to “a”，engine rev is reduced.
★ The engine best working speed is 1800rpm,and the
working speed can balance fuel consumption and work
efficiency.
To Next Page