Yamaha TZ125M1 Owner's Service Manual page 157

CRANKCASE, CRANKSHAFT AND WATER PUMP
3. Inspect:
• Oil seal 1
Damage ≥ Replace.
EC4N4201
Crankshaft
1. Measure:
• Runout limit a
• Small end free play limit b
• Connecting rod big end side clearance c
• Crank width d
A
Out of specification ≥ Replace.
Use the dial gauge and a thickness gauge.
Dial gauge:
YU-03097/90890-01252
Standard
Runout 0.03 mm
limit (0.0012 in)
Small end 0.8~1.0 mm
s
free play (0.031~0.039 in)
Side 0.2~0.7 mm
clearance (0.008~0.028 in)
Crank 52.90~52.95 mm
width (2.083~2.085 in)
EC444200
Impeller shaft
1. Inspect:
• Impeller shaft 1
Bend/Wear/Damage ≥ Replace.
Fur deposits ≥ Clean.
EC444400
Oil seal
1. Inspect:
• Oil seal 1
Wear/Damage ≥ Replace.
4-69
ENG
<Limit>
0.05 mm
(0.0020 in)
2.0 mm
(0.08 in)
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