Yamaha F50A - Page 25

62Y3A11
1-20
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I
Starting control
When starting the engine, the timing is set to 5° BTDC until the crankshaft speed maintains 600
r/min for two seconds or longer.
1
Cylinder identification protrusion
2
Protrusion for cylinders #1 and #4
3
Pulser coil
4
Protrusion for cylinders #2 and #3
5
Pulser coil signal
6
Cylinder identification signal
7
Starting signal (5° BTDC) for cylinders #1 and
#4
8
Starting signal (5° BTDC) for cylinders #2 and
#3
9
Rotating direction
Warm-up control
After the starting control is completed, the control transfers to the ignition timing based on the warm-
up map for three minutes. From the time the three-minute warm-up control has been completed, the
control transfers to the normal map.
1
Ignition timing (BTDC°)
2
Engine speed (
×
1,000 r/min)
3
Warm-up map
4
Acceleration map
5
Normal map
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S62Y1350
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5
123456
S62Y1360
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Technical tips