Yamaha XVS250 2001 Service Manual page 27

Item
Valve springs
Free length
Intake
Exhaust
Installed length (valve closed)
Intake
Exhaust
Compressed spring force
(installed)
Intake
Exhaust
Spring tilt
Intake
Exhaust
Winding direction (top view)
Intake
Exhaust
Cylinders
Cylinder arrangement
Bore stroke
Compression ratio
Bore
ENGINE SPECIFICATIONS
Standard
29.75 mm
29.75 mm
25.7 mm
25.7 mm
71.7 X 79.3 N (71.7 X 7.93 kg)
71.7 X 79.3 N (71.7 X 79.3 kg)
DDD
DDD
Clockwise
Clockwise
Air coded 4-stroke
49  66 mm
10.0 : 1
48.99 X 49.03 mm
2-5
SPEC
Limit
28.75 mm
28.75 mm
DDD
DDD
DDD
DDD
2.5_/1.7 mm
2.5_/1.7 mm
DDD
DDD
DDD
DDD
DDD
49.1 mm