Yamaha YFM250RX 2008 Service Manual page 30

Item
Tilt limit
Direction of winding
(top view)
Piston
Piston to cylinder clearance
Piston size "D"
Measuring point "H"
Piston off set
Offset direction
Piston pin bore inside diameter
Piston pin outside diameter
Piston-pin-to-piston-pin-bore
clearance
ENGINE SPECIFICATIONS
IN • • •
EX • • •
IN Clockwise
EX Clockwise
0.010 ~ 0.025 mm (0.0004 ~ 0.0010 in)
73.983 ~ 73.998 mm (2.9127 ~ 2.9133 in) • • •
5.0 mm (0.20 in)
0.25 mm (0.0098 in)
Intake side
17.002 ~ 17.013 mm (0.6694 ~ 0.6698 in) 17.043 mm
16.991 ~ 17.000 mm (0.6689 ~ 0.6693 in) 16.971 mm
0.002 ~ 0.022 mm (0.0001 ~ 0.0009 in)
2-7
SPEC
Standard Limit
2.5°/1.60 mm
(2.5°/0.063 in)
2.5°/1.60 mm
(2.5°/0.063 in)
• • •
• • •
0.15 mm
(0.006 in)
• • •
• • •
• • •
(0.6710 in)
(0.6681 in)
0.072 mm
(0.0028 in)