0C-1 Service Data:
General Info rmation
Service Data
Specifications
Service Data (GSF650/S/U/SUK7)
B817H20307001
Valve + Guide
Unit: mm (in)
Camshaft + Cylinder Head
Unit: mm (in)
Item Standard Limit
Valve diam.
IN. 23 (0.91) —
EX. 20 (0.79) —
Valve clearance (when cold)
IN. 0.10 – 0.20 (0.004 – 0.008) —
EX. 0.20 – 0.30 (0.008 – 0.012) —
Valve guide to valve stem clearance
IN. 0.010 – 0.037 (0.0004 – 0.0015) —
EX. 0.030 – 0.057 (0.0012 – 0.0022) —
Valve stem deflection IN. & EX. — 0.35 (0.014)
Valve guide I.D. IN. & EX. 4.500 – 4.512 (0.1772 – 0.1776) —
Valve stem O.D.
IN. 4.475 – 4.490 (0.1762 – 0.1768) —
EX. 4.455 – 4.470 (0.1754 – 0.1760) —
Valve stem runout IN. & EX. — 0.05 (0.002)
Valve head thickness IN. & EX. — 0.5 (0.02)
Valve seat width IN. & EX. 0.9 – 1.1 (0.035 – 0.043) —
Valve head radial runout IN. & EX. — 0.03 (0.001)
Valve spring free length IN. & EX. — 40.4 (1.59)
Valve spring tension IN. & EX.
182 – 210 N (18.2 – 21.0 kgf, 40.1 – 46.3 lbs)
at length 36.0 mm (1.42 in)
—
Item Standard Limit
Cam height
IN. 35.65 – 35.69 (1.4035 – 1.4051) 35.35 (1.3917)
EX. 35.37 – 35.41 (1.3925 – 1.3941) 35.07 (1.3807)
Camshaft journal oil clearance IN. & EX. 0.032 – 0.066 (0.0013 – 0.0026) 0.150 (0.0059)
Camshaft journal holder I.D. IN. & EX. 24.012 – 24.025 (0.9454 – 0.9459) —
Camshaft journal O.D. IN. & EX. 23.959 – 23.980 (0.9433 – 0.9441) —
Camshaft runout IN. & EX. — 0.10 (0.004)
Cam chain pin (at arrow “3”) 16th pin —
Cylinder head distortion — 0.20 (0.008)
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