Yamaha TT-R90(S) Owner's Service Manual page 68

CHASSIS
Item
Steering system:
Steering bearing type
Front suspension:
Front fork travel
Fork spring free length
Fork spring fitting length
Spring rate, STD
Optional spring/spacer
Oil capacity
Oil level
Oil grade
Rear suspension:
Shock absorber travel
Spring free length
Fitting length
Spring rate, STD
Optional spring
Enclosed gas pressure
Swingarm:
Swingarm free play limit
End
Side clearance
Wheel:
Front wheel type
Rear wheel type
Front rim size/material
Rear rim size/material
Rim runout limit:
Radial
Lateral
Drive chain:
Type/manufacturer
Number of links
Chain slack
Chain length (10 links)
MAINTENANCE SPECIFICATIONS
Angular bearing
110 mm (4.33 in)
425.1 mm (16.74 in)
415.1 mm (16.34 in)
K = 3.4 N/mm
(0.35 kg/mm, 19.41 lb/in)
No
3
64 cm
(2.26 Imp oz, 2.16 US oz)
185 mm (7.28 in)
Fork oil 15W or equivalent
48 mm (1.89 in)
169 mm (6.65 in)
165 mm (6.5 in)
K = 45.6 N/mm
(4.65 kg/mm, 260 lb/in)
No
2,000 kPa
(20 kg/cm
----
----
Spoke wheel
Spoke wheel
14 × 1.40/steel
12 × 1.60/steel
----
----
DID420(I)/DAIDO
86 links
40 ~ 53 mm (1.6 ~ 2.1 in)
----
2 - 11
Standard
2
, 290 psi)
SPEC
Limit
----
----
417 mm (16.4 in)
----
----
----
----
----
----
----
----
----
----
----
----
1.0 mm (0.04 in)
0.3 mm (0.01 in)
----
----
----
----
2.0 mm (0.08 in)
2.0 mm (0.08 in)
----
----
----
121.9 mm
(4.80 in)