Yamaha YFM90RA Owner's Manual page 41

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
2. Half open (warming up position)
3. Closed
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
crank the engine more than 10 seconds on each
attempt.
6-2
10˚ 20˚ 30˚
˚C
50˚ 70˚ 90˚ ˚F
4
2
1
3
3
6