Technical data

STD. REPAIR SERVICE
VALUE LIMIT LIMIT
b. Valve head diameter (Exhaust)
W13 25.0 mm
W21, W27 25.2 mm
W33 28.0 mm
c. Overall length W13 103.0 mm
W21, W27 114.5 mm
W33 126.0 mm
d. Stem O.D. W13, W21, W27 6.6 mm
. W33 8.0 mm
e. Clearance between stem & guide
Intake valve 0.10 mm
Exhaust valve 0.15 mm
f. Valve face angle 45
0
g. Valve head thickness (margin)
W13, W21, W27 1.0 mm 0.50 mm
W33 1.5 mm 0.50 mm
9. Valve Spring
a. Free length W13, W21,W27 43.0 mm 41.7 mm
W33 45.85 mm 44.5 mm
b. Installed load/length W13 14.0kg+/-0.6/36.0mm 15%
W21, W27 11.8kg+/-0.6/37.1mm 15%
W33 13.2kg+/-0.7/41.8mm 15%
c. Squareness 1.5
0
3.0
0
10. Rocker Arm
a. Rocker arm hole I.D. 18.9 mm
b. Rocker arm to shaft clearance 0.05 mm -0.2 mm
11. Cylinder Block
Camshaft Hole I.D.
Front (bush) 45.0mm
Center 44.0mm
Rear W13, W21, W27 34.0mm
W33 39.0mm