Yamaha YFM90RY Owner's Manual page 39

TIP
This model is equipped with an ignition circuit cut-
off system. The engine can be started only when
the rear brake lever is applied.
4. Use the choke in reference to the figure:
Position (1):
Cold engine start with ambient temperature be-
low 30 °C (90 °F).
Position (2):
Warming up position.
Position (3):
Cold engine start with ambient temperature
above 25 °C (80 °F).
Ambient temp./choke position
0°
30°
1
1. Fully open "ON"
2. Half open (warming up position)
3. Closed "OFF"
4. Choke
5. Completely close the throttle lever and start
the engine by pushing the start switch.
TIP
If the engine fails to start, release the start switch,
then push it again. Pause a few seconds before
the next attempt. Each cranking should be as short
as possible to preserve battery energy. Do not
6-2
10° 20° 30° °C
90° °F
50° 70°
4
2
1
3
3
6 6