Modelcode

Modelname

Year

256

XS1B - XS1F

1970

Valve Clearance Cold  
Intake 0.15 mm
Exhaust 0.30
Compression  
Pressure 9.5 - 10.5 Bar
Ratio 1 : 8.7
Engine Oil 20W50 - 20W40
Clutch  
Plates Friction + Clutch 6 + 5
Thickness Friction plate 3.5 mm
Thickness Clutch plate 1.4
Adjustment Screw 1/4 turn back
Ignition  
Point gap 0.3 - 0.4 mm
Spark Plugs NGK B-8ES
Spark plug gap 0.6 - 0.7 mm
Carburetor Mikuni BS 38
Mainjet 130
Pilotjet 42.5
Chain - number of links 97
Sprocket Front 17
Sprocket Rear 34
Frontfork  
Oil Quantity 223 cc
Oil Type 10W30
Torque Specifications  
Cylinderhead M6-10 NM M8-21Nm
M10-36
Crankcase M8-20Nm
Tyre Pressure  
Front 1.6 - 1.8 Bar
Rear 2.0 - 2.1 Bar