SUZUKI Bandit250 (GSF250) GJ74A SPECIFICATIONS & DATA

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SPECIFICATIONS & DATA / SERVICE DATA

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INDEX

The following data is the one of "GSF250/45H.P/Separate handle type" as long as there is especially no annotation.

Specification

After the September,1992 (40H.P. types) with as for changing(this part)

Dimentions(LengthxWidhtxHeight)
2,050x700x1,060 mm
2,050x745x1,075 mm(Pipe handle type)
2,050x700x1,155 mm(GSF250ZM/ZP "LIMITED" edition)
2,050x735x1,060 mm(Pipe handle type in [ September, 1992 ] and afterwards.)
Wheelbase
1,435 mm
Ground clearance
155 mm
Seat height
750 mm
Weight
176 kg(387 lbs)
179 kg(394 lbs)(GSF250ZM/ZP "LIMITED" edition)
Distance until it stops(50 km/h)
14.0 m
Fuel consumption(50 km/h constant bench test)
42.5 km/Litter(43.5 km/ Litter)

ENGINE:

Type
4-stroke, liquid-cooled, DOHC 16-valves
Cylinders
4
Displacement
248 cm3
Bore and stroke
49.0x33.0 mm
Compression Ratio
12.5:1
Lubrication system
Wet sump
Maximum power
45H.P./14,500 r/min.(40H.P./13,500 r/min.)
Maximum torque
2.6kg.m/10,500 r/min.(2.7kg.m/10,000 r/min.)
Fuel
Unleaded petrol
Fuel tank capacity
Total 14 Litter (Reserve 3.5 Litter)

DRIVE TRAIN:

Transmission
6-speed constant mesh (1-down, 5-up)
Primary reduction: 2.285
Final reduction: 3.769(13Tx49T)
Gear ratio
1st: 3.083
2nd: 2.200
3rd: 1.722
4th: 1.450
5th: 1.315(1.285)
6th: 1.227(1.150)
Clutch
Wet multi-plate type
Drive chain
D.I.D 520V7 / RK 520SMOZ9
116 Links

CHASSIS:

Suspention
F: Telescopic, coil spring, oil damped
R: Link type, coil spring, oil damped
Stroke / Travel
F: 120 mm
R: 131 mm
Caster / Trail
26 degrees / 101 mm
Steering angle
R/L: 32 degrees
Minimum turning radius
2.9m
Tire size
F: 110/70-17 54H
R: 140/70-17 66H

ELECTRIC:

Ignition type
Electronic ignition (Transistorized)
Battery type
YTX7A-BS
12 V / 6 Ah (10 HR)
Spark Plugs
NGK: CR7E,CR8E(Normal),CR9E
ND: U22ESR-N,U24ESR-N(Normal),U27ESR-N

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Maintenance data

Driving operation

Front brake lever play
5-20 mm(Lever tip)
Rear brake pedal play
5-15 mm
clutch lever play
10-15 mm(Lever tip)
Throttle wire play
2-4 mm(Accelerator grip rotations)

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Chassis

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Tire pressure
F: 2.00 kg/cm2
R: 2.25 kg/cm2(2.50 kg/cm2:Dual riding)
Wear limit of tire groove
F: 0.8 mm(Recommendation limit 1. 6 mm with respect to safety)
R: 0.8mm(Recommendation limit 2. 0 mm with respect to safety)
Looseness quantity of drive chain
25-35 mm(Center stand, intermediate position)
Extension limit size of drive chain
319. 4 mm(Between 21 pins)

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Suspention

Front suspention
Designated fork oil: #10
Fork oil level(No spring,Full compress,Height from the upper end of a pipe to oil surface):
  • Separate handle model: 84 mm
  • Pipe handle model: 82 mm
  • GSF250ZP(40H.P. "LIMITED" Edition only): 103 mm
Fork oil capacity(Single side):
  • Separate handle model: 570 ml
  • Pipe handle model: 516 ml
  • GSF250ZP(40H.P. "LIMITED" Edition only): 550 ml
Coil spring free length / Use limit:
  • Separate handle model: 315/302 mm
  • Pipe handle model: 315/298 mm
  • GSF250ZP(40H.P. "LIMITED" Edition only): 285.5/275.1 mm
Rear suspention stopper position
4/7

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Engine

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Engine oil
SAE 10W/40, API SE or SF
Change: 2,700 ml
Filter change: 3,000 ml
Overhaul: 3,400 ml
Coolant including
Reserve tank: 150-250 ml
Engine: 1,700 ml
Idle speed
1,600 r/min.
Pilot screw(P.S.) Master returnig
About 1 rotation.
Spark plug GAP
0.7-0.8 mm
Compression(Accel full open,Starter motor ON)
Standard: 11.5-13.5kg/cm2(450 r/min.)
Use limit: 8kg/cm2
Difference between cylinders: Less than 2kg/cm2
Valve clearance(Cold)
Intake: 0.17-0.27 mm
Exhaust: 0.20-0.30 mm
Valve timing
Intake:
Open: 33 degrees BTDC (40H.P. types: 24 degrees BTDC)
Close: 58 degrees ABDC (40H.P. types: 44 degrees ABDC)
Exhaust:
Open: 63 degrees BBDC (40H.P. types: 44 degrees BBDC)
Close: 35 degrees ATDC (40H.P. types: 24 degrees ATDC)

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Electric parts check

Ignitor

Ignitor terminal assign Ignitor

  1. To ignition coil (#2,#3)
  2. To ignition coil (#1,#4)
  3. (No connection.)
  4. (No connection.)
  5. Battery(+12V)
  6. Frame ground(0V)
  7. From signal coil(+)
  8. (No connection.)
  9. From signal coil(-)
  10. (No connection.)

1989 -> August,1992 (45H.P. types)

Unit is kilo-ohms. "X"=Infinity.

[45H.P.]Multimeter red probe
Multimeter
black probe
-12345678910
1-XXXXXXXXX
2X-XXXXXXXX
3XX-XXXXXXX
4XXX-XXXXXX
511.511.5XX-55.1X150X
62.82.8XXX-0.2X80X
73.03.0XXX0.2-X80X
8XXXXXXX-XX
9150150XXX8080X-X
10XXXXXXXXX-

After the September,1992 (40H.P. types)

Unit is kilo-ohms. "X"=Infinity.

[40H.P.]Multimeter red probe
Multimeter
black probe
-12345678910
1-XXXXXXXXX
2X-XXXXXXXX
3XX-XXXXXXX
4XXX-XXXXXX
511.511.5XX-57.5X170X
62.82.8XX3.1-7.5X60X
77.77.7XX8.63.5-X50X
8XXXXXXX-XX
9400400XX400250250X-X
10XXXXXXXXX-

An exact value will not come out, when the battery of Multimeter is old.

Value is not absolute,Even if measured value is in within the limits, there is a case which is very rarely out of order.

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Regurator-Rectifier

Circuit diam. of Regurator-Rectifier Regurator-Rectifier

Unit is kilo-ohms. "X"=Infinity.

-Multimeter red probe
Multimeter
black probe
-BBBB/RB/W
B-XX1-10X
BX-X1-10X
BXX-1-10X
B/RXXX-X
B/W1-101-101-102-20-

An exact value will not come out, when the battery of Multimeter is old.

Value is not absolute,Even if measured value is in within the limits, there is a case which is very rarely out of order.

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Others

Ignition timing
BTDC 20 degrees/1,800 r/min.
Battery charging voltage
13-16Volts(5,000 r/min.,Between battery terminals)
Ignition coil resistance(A plug cap needs to remove and measure.)
Ignition coil check
Primary side: 2.5-3.8ohms
Secondary side(Plug code side): 13-18Kilo-ohms
Signal generator resistance
Signal generator connector
269-404ohms(Between the Brown and Black/Blue line.)
AC generator
AC generator connector
Connect three yellow lines electrically.
Neutral switch
Blue line and ground (engine or frame) in is measured.
Neutral: Short
The rest: Open
Side stand switch
Green line and Black/white line in is measured. (Note it in the direction of the diode on a Black/white line.)
Push: Short
Release: Open
Side stand diode
Side stand diode Side stand diode
Circuit diam
Electricity must flow from A only in the direction of K.
Side stand relay
Side stand relay terminal assign Side stand relay
1-2: Open
When the direct current voltage of 12V is applied between 3 and 4, 1 and 2 are short.
Starter relay
Starter relay position Starter relay terminal assign
1-2: 3.5-5ohms
When the direct current voltage of 12V is applied between 1 and 2, 3 and 4 are short.
CAUTION: Wire after removing everything.

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HISTORY

Model code name
Beginning of chassis No. / Date
  • Changed part from a pre- model.

45H.P. types

GSF250 (45H.P.)

GSF250 (45H.P.)

GSF250ZM (45H.P.)

GSF250ZM "LIMITED"(45H.P.)

GSF250
GJ74A-100001- /December,1989
  • Sepatrate handle,First model.
GSF250N(pipe handle model)
GJ74A-104333- /April,1990
  • Pipe handle.
  • A characteristic change of a rear shock unit was made. Red paint is in an upper end as a mark.
GSF250ZM("LIMITED" edition)
GJ74A-115400- /May,1991
  • Frame mounted half cowling,Mirror,GSX-R type meter unit.
  • Processing was given stop sliding on the outer skin of a sheet.
  • The surface treatment of engine parts was changed partially.
  • Change of an arrangement of a carburator.

40H.P. types

GSF250P (40H.P.)

GSF250P (40H.P.)

GSF250NP (40H.P.)

GSF250NP (40H.P. pipe handle edition)

GSF250ZP (40H.P.)

GSF250ZP (40H.P. "LIMITED" edition)

GSF250P
GJ74A-122208- /September,1992
  • Power was downed to 40H.P. and torque was raised a little. Changed Cam shaft,Signal generator,Ignitor unit,Carburator parts,and more..
    • "Don't exceed 40H.P. for safety" was decided by the 250 cc motorcycle by talks of makers at this year in Japan.
  • Red zone turned from 16,000 r/min. up on Tachometer, limit 18,000 r/min.
  • Gear ratio of 5th and 6th is set up highly.
  • Light-switch and position-lamp are abolished and it always came to switch on the light.
    • It is because the law (regulation) "Motorcycle should turn on a light and should also run daytime for safety." was newly enacted from this year in Japan.
  • Turn signal light lens was roundish.
  • Since the Turn signal circuit was mechanical, shortly after becoming a transistor type and turning on the switch, it came to switch on the light.
  • Pattern on the surface of a grip changed to the type which drew the line aslant.
  • Six hollows which suited the clutch cover on the right-hand side of engine were lost. However, there was no "LIMITED" edition from the beginning.
GSF250NP(pipe handle model)
GJ74A-122608- /October,1992
  • 40H.P. Pipe handle.
  • A characteristic change of a rear shock unit was made. Red paint is in an upper end as a mark.
  • Others are the same as GSF250P.
GSF250ZP("LIMITED" edition)
GJ74A-125228- /May,1993
  • 40H.P. "LIMITED" edition.
  • Solid coloring.
  • Others are the same as GSF250P.
GSF250R(GJ74A Final model)
GJ74A-127631- /October,1993
  • But unknown for details, as the paint color of the body only changed.
GSF250NR(GJ74A Final pipe handle)
GJ74A-127811- /October,1993
  • But unknown for details, as the paint color of the body only changed.
1994 were full and production was ended.

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GJ77A

...Succeeding GJ77A!!


It quotes from-
SUZUKI Bandit250 Service guide book(1989)
SUZUKI Bandit250 Owner's manual(1990 Separate handle type)