Yamaha F40BMHD Service Manual page 44

SPEC
Item
VALVES
Tappet clearance
Valve dimensions
Head diameter "A"
Face width "B"
Seat width "C"
Margin thickness "D"
Stem outside diameter
Guide inside diameter
Stem-guide clearance
Stem runout limit
VALVE SPRINGS
Free length
Free length, limit
Tilt limit
MAINTENANCE SPECIFICATIONS
Worldwide Unit
USA, Canada
IN mm (in)
EX mm (in)
IN mm (in)
EX mm (in)
IN mm (in)
EX mm (in)
IN mm (in)
EX mm (in)
IN mm (in)
EX mm (in)
IN mm (in)
EX mm (in)
mm (in)
IN mm (in)
EX mm (in)
mm (in)
IN, EX mm (in)
IN, EX mm (in)
IN, EX mm (in)
F40BMHD, WHD
F40MH
0.2±0.05 (0.008±0.002)
0.3±0.05 (0.012±0.002)
31.9 - 32.1 (1.255 - 1.263)
25.9 - 26.1 (1.020 - 1.027)
2.3 - 2.7 (0.091 - 0.106)
2.5 - 2.9 (0.098 - 0.114)
0.9 - 1.1 (0.035 - 0.043)
0.6 - 1.0 (0.024 - 0.039)
0.7 - 1.1 (0.026 - 0.043)
5.475 - 5.490 (0.2155 - 0.2161)
5.460 - 5.475 (0.2150 - 0.2155)
5.500 - 5.512(0.2147 - 0.2170)
0.010 - 0.037 (0.0004 - 0.0015)
0.025 - 0.052 (0.0004 - 0.0015)
0.016 (0.0006)
37 .85 - 39.85 (1.491 - 1.569)
2-4
Model
F40BED, F40BET
F40ER, F40TR
37 .85 (1.49)
1.7 (0.06)
E