Yamaha F50F, Service Manual

Page: 32 / 305

SPEC
Specifications
2-9
6C13G11
Electrical
Item Unit
Model
F50FED F50FEHT F50FET FT50GET
Ignition and ignition control
system
Ignition timing range
(*1)
Degree ATDC 10-BTDC 25
Spark plug gap mm (in) 0.8–0.9 (0.031–0.035)
Ignition coil resistance
Primary coil (R – B/W)
at 20 °C (68 °F)
Ω
1.53–2.07
Secondary coil
at 20 °C (68 °F) k
Ω
12.50–16.91
Spark plug wire resistance k
Ω
1.9–5.0
ECM output peak voltage
(B/R, B/W – ground)
at cranking (loaded) V 240
at 1,500 r/min (loaded) V 290
at 3,500 r/min (loaded) V 300
Pulser coil output peak voltage
(W/R – W/B)
at cranking (unloaded) V 7.9
at cranking (loaded) V 7.2
at 1,500 r/min (loaded) V 20.7
at 3,500 r/min (loaded) V 32.0
Pulser coil resistance
(*2)
(W/B – W/R)
Ω
396–594
Pulser coil air gap mm (in) 0.75
±
0.25 (0.030
±
0.010)
Throttle position sensor
Output voltage (P – B) V 0.8–1.2 at engine idle speed
Sensor assembly resistance
(*2)
at 20 °C (68 °F) k
Ω
5.4–6.6
at 80 °C (176 °F) k
Ω
0.282–0.382
Cooling water temperature
sensor resistance
(*2)
(B/Y – B)
at 20 °C (68 °F) k
Ω
2.439
at 60 °C (140 °F) k
Ω
0.589
at 100 °C (212 °F) k
Ω
0.193
Fuel control system
Fuel injector resistance
(*2)
at 21 °C (70 °F)
Ω
12.0
Solenoid valve resistance
(*2)
at 20 °C (68 °F)
Ω
30.0–34.0
(*1)
The actual ignition timing may vary according to environmental conditions.
The figures are for reference only and do not represent the ignition timing figures from the fully closed posi-
tion to the fully open position of the throttle valve.
(*2)
The figures are for reference only.