Starter Knob (Choke) - Yamaha YZ125 2021 Owner's Service Manual

INSTRUMENT AND CONTROL FUNCTIONS
in this position.
EAM30444

STARTER KNOB (CHOKE)

When cold, the engine requires a richer air-fuel
mixture for starting. A separate starter circuit,
which is controlled by the starter knob "1", sup-
plies this mixture. Pull the starter knob out to
open the circuit for starting. When the engine
has warmed up, push it in to close the circuit.
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