Crankshaft Inspection; Oil Strainer Inspection - Yamaha WR250F(P) Owner's Service Manual

Wr series
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CRANKCASE AND CRANKSHAFT
4 - 93
EC4N4201
Crankshaft
1. Measure:
Runout limit a
G
Small end free play limit b
G
Connecting rod big end side clearance
G
c
Crank width d
G
Out of specification → Replace.
Use the dial gauge and a thickness
gauge.
Dial gauge and stand:
YU-3097/90890-01252
Standard
Runout
0.03 mm
limit:
(0.0012 in)
Small end
0.4 ~ 1.0 mm
free play:
(0.016 ~ 0.039 in)
Side
0.15 ~ 0.45 mm
clearance:
(0.0059 ~ 0.0177 in)
Crack
55.95 ~ 56.00 mm
width:
(2.203 ~ 2.205 in)
Oil strainer
1. Inspect:
Oil strainer
G
Damage → Replace.
Oil delivery pipe 2
1. Inspect:
Oil delivery pipe 2 1
G
O-ring 2
G
Damage → Replace.
Oil orifice a
G
Clogged → Blow.
ENG
<Limit>
0.05 mm
(0.002 in)
2.0 mm
(0.08 in)
0.50 mm
(0.02 in)

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Wr250Wr250fWr250p

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