Yamaha RS90K Manuel D'atelier page 735

MAINTENANCE SPECIFICATIONS
ENGINE
Model
Cylinder head:
Volume (with spark plug)
<Warpage limit>
Cylinder:
Material
Bore size
<Taper limit>
<Out of round>
Camshaft:
Drive system
Camshaft cap inside diameter
Camshaft journal diameter
Camshaft-journal-to-camshaft-cap clear-
ance
Camshaft dimensions
Intake "A"
<Limit>
"B"
<Limit>
Exhaust "A"
<Limit>
"B"
<Limit>
Camshaft runout
Timing chain:
Model/Number of links
Tensioning system
MAINTENANCE SPECIFICATIONS
RS90/RS90R/RSG90/RS90M/RST90/RST90TF
22.82 ~ 23.62 cm
0.10 mm (0.0039 in)
Lines indicate straight edge measurement.
Aluminum alloy with dispersion coating
79.000 ~ 79.010 mm (3.1102 ~ 3.1106 in)
0.050 mm (0.0020 in)
0.050 mm (0.0020 in)
Chain drive (right)
24.500 ~ 24.521 mm (0.9646 ~ 0.9654 in)
24.459 ~ 24.472 mm (0.9630 ~ 0.9635 in)
0.028 ~ 0.062 mm (0.0011 ~ 0.0024 in)
33.75 ~ 33.85 mm (1.3287 ~ 1.3327 in)
33.65 mm (1.3248 in)
24.95 ~ 25.05 mm (0.9823 ~ 0.9862 in)
A
24.85 mm (0.9783 in)
33.75 ~ 33.85 mm (1.3287 ~ 1.3327 in)
33.65 mm (1.3248 in)
B
24.95 ~ 25.05 mm (0.9823 ~ 0.9862 in)
24.85 mm (0.9783 in)
0.03 mm (0.0012 in)
98XTRH2005/140
Automatic
9-4
SPEC
3
(1.39 ~ 1.44 cu.in)