Westerbeke 6.5KW Technical Manual page 28

Cylinder head
Height
Warp limit
Grinding limit
Valve seat
Seat sinking (Dim "L")
Standard
Wear limit
Seat Angle
Intake
Exhaust
Seat Width
Intake
Exhaust
Valve guide, valve and valve spring
Valve stem to guide clearance
Standard
Wear limit
Guide inner diameter
Valve stem diameter
Intake
Standard
Wear limit
Exhaust
Standard
Wear limit
Valve head diameter
Intake
Exhaust
Valve face angle
Intake and exhaust
Minimum valve head thickness
(marg in)
Valve spring squareness limit
Free length of valve spring
Intake and exhaust
Standard
Wear limit
Valve spring constant
Rocker arm and rocker arm shaft
Bore in rocker arm
Clearance in rocker arm
Standard
Wear limit
22
90.5
mm
(3.563 in)
0.15
mm
(0.006 in)
0.20
mm
(0.008 in)
39.5
mm
(1.555 in)
1.5
mm
(0.059 in)
45·
41)·
1.4
mm
(0.055 in)
1.4
mm
(0.055 in)
0.018 - 0.053
mm
(0.007 - 0.0021 in)
0.20
mm
(0.0079 in)
8.063 - 8.083
mm
(0.3174 - 0.3182 in)
8.080 - 8.045
mm
(0.3161 - 0.3167 in)
7.980
mm
(0.3142 in)
8.025 - 8.045
mm
(0.3159 - 0.3167 in)
7.975
mm
(0.3140 in)
35.95 - 36.05
mm
(1.4154 - 1.4193 in)
30.95 - 31.05
mm
(1.2185 - 1.2225 in)
45·
1.0
mm
(0.0394 in)
1.51
mm
(0.059in)
43.3
mm
(1.705 in)
42.0
mm
(1.654in)
2.925 kg/mm (164 1b/in)
19.0 - 19.033
mm
(0.7480 - 0.7473 in)
0.020 - 0.074 mm
(0.0008 - 0.0029 in)
0.10
mm
(0.0039 in)