12-12 DF25/30 “K3” (2003) MODEL
9.8 (0.39)mm (in)
STD
4.8 (0.19)mm (in)
Limit
STD
Limit
mm (in)
mm (in)
19.5 (0.77)
18.5 (0.73)
PTT MOTOR (Applicable model)
Brush length
Commutator outside
diameter
Tester probe connection
Testing sequence
Peak voltage
64V or over
Remarks
PEAK VOLTAGE
Requirements for peak voltage measurement
• Remove all spark plugs to eliminate the variables at cranking speed.
• Crank with recoil starter or starter motor.
• Use a STEVENS peak voltage tester, Model CD-77.
CDI output
No.1
No.2
No.3
+ (Red) – (Black)
Tester range
1
Light green
Blue
Orange
Black
POS 500
With ignition coil
connected.
21V or over
Power source coil output
No.1
No.2
Manual start
2
Brown
White
Red
Green
POS 500
With CDI unit
disconnected.
Red/White
3V or over
Black
SEN 50
CKP sensor
output
Battery
charge
coil output
3
4
Yellow
Electric start
4V or over
Red
POS 50
8V or over
With rectifier
disconnected.
White/Black
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