Yamaha XP500, Руководство по обслуживанию

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SPEC
ENGINE SPECIFICATIONS
Valves, valve seats, valve guides
Valve clearance (cold)
Intake 0.15 ~ 0.20 mm (0.0059 ~ 0.0079 in) ----
Exhaust 0.25 ~ 0.30 mm (0.0098 ~ 0.0118 in) ----
Valve dimensions
Valve head diameter A
Intake 24.9 ~ 25.1 mm (0.9803 ~ 0.9882 in) ----
Exhaust 21.9 ~ 22.1 mm (0.8622 ~ 0.8701 in) ----
Valve face width B
Intake 1.14 ~ 1.98 mm (0.0449 ~ 0.0780 in) ----
Exhaust 1.14 ~ 1.98 mm (0.0449 ~ 0.0780 in) ----
Valve seat width C
Intake 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in) 1.6 mm
(0.06 in)
Exhaust 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in) 1.6 mm
(0.06 in)
Valve margin thickness D
Intake 0.6 ~ 0.8 mm (0.0236 ~ 0.0315 in) 0.5 mm
(0.0197 in)
Exhaust 0.6 ~ 0.8 mm (0.0236 ~ 0.0315 in) 0.5 mm
(0.0197 in)
Valve stem diameter
Intake 3.975 ~ 3.990 mm (0.1565 ~ 0.1571 in) 3.945 mm
(0.1553 in)
Exhaust 3.960 ~ 3.975 mm (0.1559 ~ 0.1565 in) 3.930 mm
(0.1547 in)
Valve guide inside diameter
Intake 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in) 4.050 mm
(0.1594 in)
Exhaust 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in) 4.050 mm
(0.1594 in)
Valve-stem-to-valve-guide clearance
Intake 0.010 ~ 0.037 mm (0.0004 ~ 0.0015 in) 0.080 mm
(0.0032 in)
Exhaust 0.025 ~ 0.052 mm (0.0010 ~ 0.0020 in) 0.100 mm
(0.0039 in)
Item Standard Limit
B
C
D
A
Head Diameter Face Width Seat Width Margin Thickness