Suzuki GSX-R750 Service Manual page 428

GENERATOR NO-LOAD PERFORMANCE
• Lift and support the fuel tank. (5-3)
• Disconnect the generator coupler.
• Start the engine and keep it running at 5 000 r/min.
• Using the multi-circuit tester, measure the voltage between
three lead wires.
If the tester reads under the specified value, replace the gen-
erator with a new one.
 09900-25008: Multi-circuit tester set
 Tester knob indication: Voltage (~)
 Generator no-load performance:
65 V and more at 5 000 r/min (When engine is cold)
REGULATOR/RECTIFIER
• Lift and support the fuel tank. (5-3)
• Remove the air cleaner box. (5-14)
• Disconnect the regulator/rectifier couplers.
• Measure the voltage between the lead wires using the multi
circuit tester as indicated in the table below. If the voltage is
not within the specified value, replace the regulator/rectifier
with a new one.
 09900-25008: Multi-circuit tester set
 Tester knob indication: Diode test ()
B/R B/R
1
B/R
0
1
B/R
0
2
 
B
1
 
B
2
 
B
3
 
B/W
1
 
B/W
2
1.4 V and more (tester's battery voltage)
NOTE:
If the tester reads 1.4 V and below when the tester probes are
not connected, replace its battery.
+ Probe of tester to:
B B B
2 1 2 3
0.4 – 0.7 0.4 – 0.7 0.4 – 0.7 0.5 – 1.2 0.5 – 1.2
0.4 – 0.7 0.4 – 0.7 0.4 – 0.7 0.5 – 1.2 0.5 – 1.2
 
 
 
  
  
Unit: V
B/W B/W
1 2
0.4 – 0.7 0.4 – 0.7
0.4 – 0.7 0.4 – 0.7
0.4 – 0.7 0.4 – 0.7
0
0
ELECTRICAL SYSTEM 9-11
Y
Y
Y
B/W
B/R
1
1
B/R
B/W
2
2
B
2
B
1
B
3