Yamaha 2010 XMAX YP125R Service Manual page 83

Spring rate K1 (intake)
Spring rate K2 (intake)
Spring rate K1 (exhaust)
Spring rate K2 (exhaust)
Installed compression spring force (intake)
Installed compression spring force (exhaust)
Spring tilt (intake)
Spring tilt (exhaust)
Winding direction (intake)
Winding direction (exhaust)
Cylinder
Bore
Wear limit
Taper limit
Out of round limit
Warp limit
Piston
Piston-to-cylinder clearance
Limit
Diameter D
Height H
D
Offset
Offset direction
Piston pin bore inside diameter
Limit
Piston pin outside diameter
Limit
Piston-pin-to-piston-pin-bore clearance
Limit
Piston ring
Top ring
Ring type
ENGINE SPECIFICATIONS (YP250R)
H
2-52
23.18 N/mm (2.36 kgf/mm, 132.36 lb/in)
31.66 N/mm (3.23 kgf/mm, 180.78 lb/in)
23.18 N/mm (2.36 kgf/mm, 132.36 lb/in)
31.66 N/mm (3.23 kgf/mm, 180.78 lb/in)
115–133 N (11.73–13.56 kgf, 25.85–29.90 lbf)
115–133 N (11.73–13.56 kgf, 25.85–29.90 lbf)
2.5°/1.6 mm
2.5°/1.6 mm
Clockwise
Clockwise
69.000–69.005 mm (2.7165–2.7167 in)
69.100 mm (2.7205 in)
0.030 mm (0.0012 in)
0.030 mm (0.0012 in)
0.05 mm (0.0020 in)
0.020–0.040 mm (0.0008–0.0016 in)
0.15 mm (0.0059 in)
68.965–68.980 mm (2.7152–2.7157 in)
5.0 mm (0.20 in)
0.50 mm (0.0197 in)
Intake side
17.004–17.015 mm (0.6694–0.6699 in)
17.045 mm (0.6711 in)
16.991–17.000 mm (0.6689–0.6693 in)
16.971 mm (0.6681 in)
0.004–0.024 mm (0.0002–0.0009 in)
0.074 mm (0.0029 in)
Barrel