Yamaha MZ400 Supplementary Service Manual page 14

Model name:
Model code number:
Valve:
Head diameter "A"
Stem diameter "B"
<Limit>
Stem length "C"
Valve face contact width "D"
<Limit>
Valve seat contact width
<Limit>
Valve seat width
Valve margin thickness
Valve stem runout limit
"θ"
Valve guide
Guide inside diameter
Stem to guide clearance
Valve clearance (cold)
Push rod:
Runout limit
MAINTENANCE SPECIFICATIONS
mm (in)
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
mm (in)
2-5
SPEC
MZ400
7HSB
31.9–32.1 (1.2559–1.2638)
27.9–28.1 (1.0984–1.1063)
5.948–5.963 (0.2342–0.2348)
5.940–5.955 (0.2339–0.2344)
5.918 (0.2330)
5.910 (0.2327)
88.1 (3.4685)
88.1 (3.4685)
0.7–0.9 (0.0276–0.0354)
0.7–0.9 (0.0276–0.0354)
1.6 (0.063)
1.6 (0.063)
0.7–0.9 (0.0276–0.0354)
0.7–0.9 (0.0276–0.0354)
1.6 (0.063)
1.6 (0.063)
0.7–0.9 (0.0276–0.0354)
0.7–0.9 (0.0276–0.0354)
1.0–1.4 (0.0394–0.0551)
1.0–1.4 (0.0394–0.0551)
0.01 (0.0004)
90°
6.000–6.012 (0.2362–0.2367)
6.000–6.012 (0.2362–0.2367)
0.037–0.064 (0.0015–0.0025)
0.045–0.072 (0.0018–0.0028)
0.08–0.12 (0.0031–0.0047)
0.08–0.12 (0.0031–0.0047)
0.15 (0.0059)
MX400
7HSJ