width YAMAHA TTR90 2002 Owners Manual

YAMAHA TTR90 2002 Owners Manual TTR90 2002 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/51690/w960_51690-0.png YAMAHA TTR90 2002 Owners Manual

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YAMAHA TTR90 2002  Owners Manual SPEC
2 - 1
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: TT-R90P
(USA-except for California, CDN, AUS, NZ, ZA)
TT-R90PC (USA for California)
TT-R90 (Europe)
Model code number: 5H

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YAMAHA TTR90 2002  Owners Manual SPEC
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Cam chain:
Cam chain type/No. of links 92RH2005-84M/84 ----
Cam chain adjustment method Automatic ----
Rocker arm/rocker arm shaft:
Shaft outside diameter 9.981 ~ 9.991 mm
(0.3930 ~ 0.3933

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YAMAHA TTR90 2002  Owners Manual SPEC
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Stem runout limit ---- 0.02 mm
(0.0008 in)
Valve seat width IN 0.9 ~ 1.1 mm 
(0.0354 ~ 0.0433 in)1.6 mm
(0.0630 in)
EX 0.9 ~ 1.1 mm 
(0.0354 ~ 0.0433 in)1.6 mm
(0.0630 in)
Valve spring:
Fre

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YAMAHA TTR90 2002  Owners Manual SPEC
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Crankshaft:
Crank width “A” 42.95 ~ 43.00 mm
(1.691 ~ 1.693 in)----
Runout limit C ---- 0.03 mm 
(0.0012 in)
Big end side clearance “D” 0.10 ~ 0.40 mm
(0.0039 ~ 0.0157 in)0.50 mm 
(

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YAMAHA TTR90 2002  Owners Manual 4 - 18
ENGVALVES AND VALVE SPRINGS
Valve spring
1. Measure:
lValve spring free length a 
Out of specification ® Replace.
2. Measure:
lSpring tilt a 
Out of specification ® Replace.
Free length (valv

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YAMAHA TTR90 2002  Owners Manual 4 - 19
ENGVALVES AND VALVE SPRINGS
2. Lap:
lValve face
lValve seat
NOTE:
After refacing the valve seat or replacing the
valve and valve guide, the valve seat and
valve face should be lapped.
Lapping s

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YAMAHA TTR90 2002  Owners Manual 4 - 43
ENGCRANKCASE AND CRANKSHAFT
INSPECTION
Crankshaft
1. Measure:
lRunout limit a 
lConnecting rod big end side clearance
b 
lConnecting rod big end radial clear-
ance c 
lCrank width d 
Out of spe