Yamaha TT-R90 2005 Manuel D'atelier Du Proprietaire page 63

MAINTENANCE SPECIFICATIONS
ENGINE
Cylinder head:
Warp limit
Cylinder:
Bore size
Out of round limit
Camshaft:
Drive method
Cam dimensions
Intake
Exhaust
Camshaft runout limit
MAINTENANCE SPECIFICATIONS
Item
"A"
"B"
"A"
"B"
Standard
----
47.000 ~ 47.005 mm
(1.8504 ~ 1.8506 in)
----
Chain drive (left)
25.428 ~ 25.528 mm
(1.0011 ~ 1.0050 in)
21.034 ~ 21.134 mm
(0.8281 ~ 0.8320 in)
25.286 ~ 25.386 mm
(0.9955 ~ 0.9994 in)
21.047 ~ 21.147 mm
(0.8286 ~ 0.8326 in)
----
2 - 4
SPEC
Limit
0.03 mm
(0.0012 in)
47.05 mm
(1.8524 in)
0.05 mm
(0.0020 in)
----
25.400 mm
(1.0000 in)
21.000 mm
(0.8268 in)
25.260 mm
(0.9945 in)
21.017 mm
(0.8274 in)
0.03 mm
(0.0012 in)