Starting And Stopping The Engine; The Choke - Jotagas JTG 125cc 2017 Handbuch

STARTING AND STOPPING THE ENGINE

To start the motorcycle, first make sure that the fuel tap is
open and that the gearbox is in neutral or if not, that the
clutch lever is pulled in.
Then push the starting pedal, located on the right-hand side
of the motorcycle. It will also be necessary to use the choke
when starting from cold.
To stop the engine, select neutral and press the stop button
on the handlebar.
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THE CHOKE

Use the choke when the engine is cold to start without
causing damage to the engine. This device, when used
properly, will avoid excessive wear and mechanical damage
when starting in cold temperature. To activate it, lift the
black lever on the carburettor.