Yamaha XT 125R 2005 Service Information page 13

Picture Description
Exhaust Valve Width (B)
Valve Housing Width (C)
Inlet Valve Thickness (D)
Exhaust Valve Thickness (D)
Diameter of Inlet Valve Stem
Diameter of Exhaust Valve Stem
Diameter of Inlet Valve Guides
Clearance of Inlet valve Guide/Stem
Clearance of Exhaust Valve Guide/Stem
Valve Stem Eccentricity
Valve Springs:
Free Length
Spring Length when the Valve is
Closed
Compression
Winding Direction (from top)
Upper Piston Ring:
Type
Dimensions (BxT)
Distance between Ends (when installed)
Side Clearance
Intermediate Piston Ring:
Type
Dimensions (BxT)
Distance between Ends (when installed)
Side Clearance
Lower Piston Ring:
Dimensions (BxT)
Distance between Ends (when installed)
Drive Shaft:
Crank Width (A)
Eccentricity (C)
Side Clearance of Big End of the
Connecting Rod (D)
Side Clearance of Small End of the
Connecting Rod (E)
SERVICING TECHNICAL DATA
13
SPEC
Standard
1.7~2.8 mm
0.9~1.1 mm
0.4~0.8 mm
0.8~1.2 mm
4.975~4.990 mm
4.960~4.975 mm
5.000~5.012 mm
0.010~0.037 mm
0.025~0.052 mm
-
38.78 mm
25.6 mm
13.2~15.5 kgf
(132~155 N)
Clockwise
Barrel
1.0x2.1 mm
0.15~0.30 mm
0.03~0.07 mm
Taper
1.0x2.1 mm
0.15~0.30 mm
0.02~0.06 mm
2.0x2.2 mm
0.2~0.7 mm
46.95~47.00 mm
-
0.15~0.45 mm
-
Limit
-
1.6 mm
-
-
4.950 mm
4.935 mm
5.042 mm
0.08 mm
0.10 mm
0.010 mm
37.0 mm
-
-
-
-
-
0.4 mm
0.12 mm
-
-
0.4 mm
0.12 mm
-
-
-
0.03 mm
-
0.8 mm