probst SH-3500-B Operating Instructions Manual page 146

OPERATION
2. Operate the choke lever
Note: The gas lever is factory-preset
to a certain speed.
Do not change the setting of the gas
lever.
3. To start the motor, turn the
ignition key to ON.
4. If the motor is started with
the choke lever CLOSED,
gradually OPEN it as the
motor warms up.
36
→ Close choke lever
Cold motor
→ Open choke lever
Warm motor
Ignition switch
If the motor does not start within five seconds, release the ignition
key and wait for at least ten seconds before attempting to start it
again.
Open
The gasoline motor now runs in idle.
Choke lever
Closed
ON
OFF START
ON
Choke lever
Closed
Open
Open