Suzuki GSF650S Service Manual page 254

CARBON BRUSHES
Measure the length of the carbon brushes as shown. If the mea-
surement is less then the service limit, replace the carbon
brushes with new ones.
$ Brush length
Service Limit: 4.5 mm
" 09900-20102: Vernier calipers (200 mm)
RECTIFIER
Measure the voltage among the terminal 1 and the other termi-
nals (P , P , P and P
1 2 3 4
and the other lead to P
reading and then switch the leads. Perform other side tests
among the terminal 2 and the other terminals (P
P ), as described below. If the voltage measured is excessively
4
out of specification, replace the rectifier.
" 09900-25008: Multi circuit tester set
, Tester knob indication: Diode test (-)
Terminal – Terminal
1 + — - P
, P , P
1 2
1 - — + P
, P , P
1 2
2 + — - P
, P , P
1 2
2 - — + P
, P , P
1 2
IC REGULATOR
Measure the voltage between terminal "F" and terminal "B".
Refer to the following table.
If the voltage measured is excessively out of specification,
replace the IC regulator.
F : Rotor coil terminal
B : Battery terminal
" 09900-25008: Multi circuit tester set
, Tester knob indication: Diode test (-)
Terminal – Terminal
B + — - F
B - — + F
NOTE:
If the tester reads under 1.4 V, replace its battery when the
tester probes are not connected.
). Put the tester lead on the terminal 1
, P , P and P terminals. Observe the
1 2 3 4
Voltage
1.4 – 1.5 V
3
0.4 – 0.5 V
3
0.4 – 0.5 V
3
1.4 – 1.5 V
3
Voltage
Approx. 1.4 V
Approx. 0.5 V
P
3
, P , P and
1 2 3
ELECTRICAL SYSTEM 6-17
P
1
P
2
P P
P
2 3
1
F
B