Yamaha 50G Service Manual page 180

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ELEC
ELECTRICAL ANALYSIS
50, 60, 70 hp
Pulser coil
Output peak voltage (minimum)
W/R – W/B
Cranking
r/min
Open
V 4.5
75, 80, 90 hp
Pulser coil
Output peak voltage (minimum)
W/R – W/B
Cranking
r/min
Open
V 7.0
4. Lighting coil output:
1) Connect the tester to the lighting
coil as shown.
2) Set the tester dial to specification.
3) Start the engine.
4) Measure the lighting coil output.
5) If the output is beyond specification,
replace rectifier/regulator.
6) If the output is below specification,
replace lighting coil.
50, 60, 70 hp
Lighting coil
Output peak voltage (minimum)
G – G/W
Cranking
r/min
Open
V 8.5
75, 80, 90 hp
Lighting coil
Output peak voltage (minimum)
G – G/W
Cranking
r/min
Open
V 10
8-19
1,500
Connect
2.5 6.5
1,500
Connect
5.0 14
1,500
Connect
8.0 25
1,500
Connect
11 25
E
3,500
10
3,500
20
3,500
25
3,500
25