Valve Clearances (COLD Engine, i.e. leave engine overnight)

Inlet valves : 0.16mm ± 0.03mm

Exhaust valves : 0.23mm ± 0.03mm

Cylinder Compression :

CBR250(F) + CBR250R(H+J+K) : 11.0 to 1

CBR250RR(L+N+R) : 11.5 to 1

Cylinder Head : Warpage (max) – 0.10mm

Bore to Piston Clearance : 0.01mm – 0.04mm

Service Limit – 0.1mm

Clutch;

Friction Plates : 7

Plain Plates (Steelies) : 6

Friction Plate Thickness : 2.6mm

Plain Plate Warpage : 0.3mm

Spring Free Height : 33.79mm

Chain;

CBR250(F) + CBR250R(H) : 520 Pitch, 108 Links

CBR250R(J+K) + CBR250RR(L+N+R) : 428 Pitch, 136 Links

Gear Box;

Primary Reduction Ratio : 2.966

Ratios;

1^st : 2.733 (41/15T)

2^nd : 2.000 (38/19T)

3^rd : 1.590 (35/22T)

4^th : 1.333 (32/24T)

5^th : 1.153 (30/26T)

6^th : 1.035 (29/28T)

Final Reduction Ratio;

CBR250(F) : 2.500 (35/14T) – 520 Pitch

CBR250R(H) : 3.142 (44/14T) – 520 Pitch

CBR250R(J+K) : 3.176 (54/17T) – 428 Pitch

CBR250RR(L+N+R) : 3.058 (52/17T) – 428 Pitch

· Cooling System

Coolant Capacity :

CBR250(F+H) : 1300cc (1100cc – Radiator, 200cc – Engine)

CBR250R(J+K) : 1500cc (1300cc – Radiator, 200cc – Engine)

CBR250RR(L+N+R) : 1570cc (1350cc – Radiator, 220cc – Engine)

Coolant : 50% Distilled Water and 50% Pure Coolant (containing corrosion

inhibiter, anti–freeze and anti–boil properties)

Pressure Cap Opening;

CBR250(F) + CBR250R(H) : 0.75 – 1.05kg/cm²

CBR250R(J+K) : 0.95 – 1.25 kg/cm²

CBR250RR(L+N+R) : 1.10 – 1.40kg/cm²

Fan Switch;

Cut In : 98 to 102^oC

Cut Out : 93 to 97^oC

Coolant Temperature Sensor Resistance at;

50^oC : 153.9W

80^oC : 51.9W

120^oC : 16.1W

Thermostat;

Opening Temp : 80 to 84^oC

Valve Lift : 8mm at 95^oC

· Fuel

Fuel Capacity;

CBR250(F) + CBR250R(H) : 14 Litres + 2.5 Litre Reservoir

CBR250R(J+K) : 13 Litres + 2 Litre Reservoir

CBR250RR(L+N+R) : 13 Litres + 1.6 Litre Reservoir

Fuel Grade : Unleaded min. 91 RON (Research Octane Number)

Engine Idle Speed : 1,500rpm ± 100rpm

Carburettor Synchronisation (max difference) : 40mmHg

Carburettor ID Code (Keihin):

CBR250(F) : VG01A

CBR250R(H) : VG03A

CBR250R(J+K) : VG05A

CBR250RR(L+N) : VP20A

CBR250RR(R) : VP20B

Carburettor Throat Diameter :

CBR250(F) : 25mm

CBR250R(H) : 27mm

CBR250R(J+K) : 28.5mm

CBR250RR(L+N+R) : 29mm

Float Heights (When measured at 30^o or needle valve seated and spring NOT compressed):

CBR250(F) : 7mm

CBR250R(H) : 7mm

CBR250R(J+K) : 8mm

CBR250RR(L+N+R) : 13.7mm

Carburettor Jet Sizes :

CBR250(F) ;

Main Jet : #85

Pilot Jet : #35

CBR250R(H);

Main Jet : #88

Pilot Jet : #35

CBR250R(J+K);

Main Jet : #85

Pilot Jet : #35

CBR250RR(L+N);

Main Jet : Cylinders 1+4 : #105

Cylinders 2+3 : #102

Pilot Jet : #35

CBR250RR(R);

Main Jet : Cylinder 1+4 : #112

Cylinder 2+3 : #110

Pilot Jet : #35

Carburettor Pilot Screw Mixture Settings (Stock Air-Filter,Exhaust,Ports,Jets)

CBR250(F) + CBR250R(H): 2½ screws

CBR250R(J+K) : 1⁵/₈ screws

CBR250RR(L+N) : 1¾ screws

CBR250RR(R) : 2¹/₈ screws

· Suspension

Fork Oil : 10W Fork Oil

Fork Oil Height (from top when fork fully compressed with spring and spacer removed) :

CBR250(F) : 114mm or 290ml ± 2.5ml

CBR250R(H) : 100mm or 302ml ± 2.5ml

CBR250R(J+K) : 95mm ± 6mm or 362ml ± 2.5ml

CBR250RR(L+N+R) : 83mm or 383ml ± 2.5ml

Fork Rake;

CBR250(F) + CBR250R(H) : 26⁰00’’

CBR250R(J+K) : 25⁰00’’

CBR250RR(L+N+R) : 24⁰00’’

Fork Trail;

CBR250(F) + CBR250R(H) : 97mm

CBR250R(J+K) + CBR250RR(L+N+R) : 89mm

Rear Shock Spring Free Length;

CBR250(F) : 186.0mm ± 3.1mm

CBR250R(H) : 175.0mm ± 3.1mm

CBR250R(J+K) : 168.7mm ± 3.1mm

CBR250RR(L+N+R) : 140.9mm ± 3.1mm

· Wheels

Max Wheel Runout (front & back);

Axial (side to side) : 2.0mm

Radial (out of round) : 2.0mm

Max Axial Runout (front & back) : 0.2mm

· Fuses

Main/Ignition : 10Amp

Headlights : 15Amp

Tail Lights/Turn Signal Lights : 10Amp

Fan : 10Amp

· Bulbs

Headlights;

Aust/UK : 60/55Watt H4 Halogen

Japan : 60/35Watt Halogen

Park Lights;

Aust/UK : 5Watt

Japan : 1.7Watt

Brake/Tail Lights;

Aust/UK : 21/5Watt

Japan : 18/5Watt

Turn Signal Lights;

Aust/UK : 21Watt

Japan : 15Watt

Instrument Lights;

Aust/UK : 3.4Watt

Japan : 1.7Watt

· Ignition System

General : Full transistor type battery firing (CDI)

Firing Order : 1 – 2 – 4 – 3

Ignition Timing;

Idle (1,500rpm – Before Top Dead Centre);

CBR250(F) + CBR250R(H) : 20^o BTDC

CBR250R(J+K) + CBR250RR(L+N): 23^o BTDC

CBR250RR(R) : 20^o BTDC

Full Advance : ???^o BTDC

Pulse Generator Coils Resistance;

CBR250(F) + CBR250R(H+J+K) : 315 –385W @ 20^oC

CBR250RR(L+N+R) : 340 – 420W @ 20^oC

Ignition HT Coils :

Primary Winding Resistance;

CBR250(F) + CBR250R(H) : 2.6 – 3.2W @ 20^oC

CBR250R(J+K) : 2.52 – 3.08W @ 20^oC

CBR250RR(L+N+R) : 2.0 – 3.5W @ 20^oC

Date: 2016-01-03; view: 1119