Yamaha tmax XP500A, Service Manual

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SPEC
ENGINE SPECIFICATIONS
Valve stem runout ---- 0.04 mm
(0.0016 in)
Valve seat width
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 springs
Free length
Intake 35.59 mm (1.40 in) 33.81 mm
(1.33 in)
Exhaust 35.59 mm (1.40 in) 33.81 mm
(1.33 in)
Installed length (valve closed)
Intake 30.39 mm (1.20 in) ----
Exhaust 30.39 mm (1.20 in) ----
Spring rate (K1)
Intake 18.84 N/mm (1.92 kg/mm, 107.60 lb/in) ----
Exhaust 18.84 N/mm (1.92 kg/mm, 107.60 lb/in) ----
Spring rate (K2)
Intake 24.52 N/mm (2.50 kg/mm, 140.01 lb/in) ----
Exhaust 24.52 N/mm (2.50 kg/mm, 140.01 lb/in) ----
Compressed spring force (installed)
Intake 91.2 ~ 104.9 N at 30.4 mm
(9.3 ~ 10.7 kg at 30.4 mm,
20.5 ~ 23.6 lb at 1.20 in) ----
Exhaust 91.2 ~ 104.9 N at 30.4 mm
(9.3 ~ 10.7 kg at 30.4 mm,
20.5 ~ 23.6 lb at 1.20 in) ----
Spring tilt
Intake (inner) ---- 2.5°/1.6 mm
(2.5°/0.06 in)
Exhaust ---- 2.5°/1.6 mm
(2.5°/0.06 in)
Item Standard Limit