Suzuki GSF1250 Service Manual

Charging System: 1J-1
Engine
Charging System
Schematic and Routing Diagram
Charging System Diagram
B718H11A02001
Component Location
Charging System Components Location
B718H11A03001
Refer to “Electrical Components Location in Section 0A (Page 0A-8)”.
Diagnostic Information and Procedures
Charging System Symptom Diagnosis
B718H11A04001
SCR
IC
Generator
Regulator/Rectifier
Ignition switch
Battery
Load
I718H11A0001-01
Condition Possible cause Correction / Reference Item
Generator does not
charge
Open- or short-circuited lead wires, or
loose lead connections.
Repair, replace or connect properly.
Short-circuited, grounded or open
generator coil.
Replace.
Short-circuited or punctured regulator/
rectifier.
Replace.
Generator does charge,
but charging rate is below
the specification
Lead wires tend to get short- or open-
circuited or loosely connected at
terminals.
Repair or retighten.
Grounded or open-circuited generator
coil.
Replace.
Defective regulator/rectifier. Replace.
Defective cell plates in the battery. Replace the battery.
Generator overcharges Internal short-circuit in the battery. Replace the battery.
Damaged or defective regulator/rectifier. Replace.
Poorly grounded regulator/rectifier. Clean and tighten ground connection.
Unstable charging Lead wire insulation frayed due to
vibration, resulting in intermittent short-
circuiting.
Repair or replace.
Internally short-circuited generator. Replace.
Defective regulator/rectifier. Replace.

Suzuki GSF1250 Specifications

General

Displacement	1255 cc
Bore x Stroke	79.0 mm x 64.0 mm
Compression Ratio	10.5:1
Fuel System	Fuel injection
Transmission	6-speed, constant mesh
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Brakes	Dual hydraulic disc
Rear Brakes	Single hydraulic disc
Front Tire	120/70ZR17M/C (58W), tubeless
Rear Tire	180/55ZR17M/C (73W), tubeless
Overall Length	2130 mm
Overall Width	790 mm
Seat Height	805 mm
Wheelbase	1485 mm
Fuel Tank Capacity	19.0 L
Starter	Electric
Final Drive	Chain
Ignition	Electronic ignition (transistorized)
Engine Type	4-stroke, liquid-cooled, DOHC
Ground Clearance	135 mm