4-65
ENG
CRANKCASE AND CRANKSHAFT
Standard
<Limit>
Runout
0.03 mm
0.05 mm
limit:
(0.0012 in)
(0.0020 in)
Small end
0.8~1.0 mm
2.0 mm
free play:
(0.031~0.039 in)
(0.08 in)
Side 0.20~0.70
mm
—
clearance:
(0.008~0.028in)
Crank 55.90~55.95
mm
—
width:
(2.201~2.203 in)
2. Inspect:
9
Bearings
1
Rotate inner race with a finger.
Rough spot/Seizure
→
Replace.
3. Inspect:
9
Oil seal
1
Damage
→
Replace.
EC4N4202
Crankshaft
1. Measure:
9
Runout limit
a
9
Small end free play limit
b
9
Connecting rod big end side clearance
c
9
Crank width
d
Out of specification
→
Replace.
Use the dial gauge and a thickness gauge.
EC4N5000
ASSEMBLY AND INSTALLATION
EC4N5300
Crankshaft bearing
1. Install:
9
Bearing
1
To crankcase (left and right).
NOTE:
Install the bearing by pressing its outer race
parallel.
Dial gauge:
YU-3097/90890-01252
Summary of Contents for YZ 2002 Series
Page 128: ...3 3 INSP ADJ MEMO ...
Page 286: ...4 37 ENG CLUTCH AND PRIMARY DRIVEN GEAR 4 Install 9Plain washer 1 9Circlip 2 ...
Page 566: ...TUN MEMO ...
Page 567: ......