BA 901/1101 en – Edition 2.1 * 91101b320.fm 3-21
Operation
Starting at low temperatures
In order to warm up the engine and the hydraulic oil, let the engine run warm
for at least five minutes before starting machine travel.
☞ Turn the starting key to position 2 and hold it in this position for about 15 seconds
➥ Engine is preheated
☞ Turn the starting key to position “3” and hold it in this position until the engine starts
➥ If the engine does not start after 10 seconds
☞ Stop starting the engine and try again after 60 seconds
➥ If the engine still does not start after the second try
☞ Contact a Wacker Neuson service center for troubleshooting
☞ Release the starting key
When the engine runs smoothly (increased engine speed):
In general, a battery delivers less energy in cold conditions. Therefore ensure that
the battery is always well charged.
Engine warm-up
After the engine has started, allow it to warm up at slightly increased idling speed until it
reaches its operating temperature of 90 °C (coolant). Run the engine without load during
the warm-up phase. During the warm-up phase, check for unusual noise, exhaust color,
leaks, malfunctions or damage. In case of malfunctions, damage or leaks, park and secure
the machine, and find out the cause for the damage and have it repaired.
Warm up the hydraulic oil, too, if you are warming up the engine, especially in cold weather.
☞ Let the engine run at half throttle only after it has reached its operating temperature, and hold
the joystick in the “Tilt in bucket” position 5 minutes (10 minutes in cold weather).
☞ Perform machine travel very carefully on an open stretch.
☞ Repeat these two steps until the machine has reached its operating temperature.
Warm up longer if the hydraulic system reacts sluggishly.
Perform machine travel and operation very carefully during this time.
The machine has not reached its operating temperature yet if the engine still
stalls during operation!
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