2006 YAMAHA WR 250F bolt pattern

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Page 406 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 65
ENGCAMSHAFTS
REMOVAL POINTS
Camshaft
1. Remove:
Timing mark accessing screw
1 
Crankshaft end accessing
screw 
2 
2. Align:
T.D.C. mark
With align mark.
Checking steps:
Turn the crankshaft

Page 410 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 69
ENGCAMSHAFTS
4. Measure:
Camshaft-to-cap clearance 
Out of specification 
→ Mea-
sure camshaft outside diame-
ter. 
5. Measure: 
Camshaft outside diameter 
a 
Out of specification 
→ 
Rep

Page 414 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 73
ENGCAMSHAFTS
Fit the timing chain 
3 onto both
camshaft sprockets and install
the camshafts on the cylinder
head.
NOTE:The camshafts should be installed
onto the cylinder head so that the
punc

Page 480 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 139
ENGCLUTCH
8. Install:
Pressure plate 
1 
9. Install:
Clutch spring 
1 
Bolt (clutch spring) 
2 
NOTE:Tighten the bolts in stage, using a
crisscross pattern.
T R..8 Nm (0.8 m · kg, 5.8 ft

Page 494 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 153
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
Impeller shaft
1. Install:
Impeller shaft 
1 
Washer 
2 
Impeller 
3 
NOTE:Take care so that the oil seal lip is
not damaged or

Page 552 of 900

YAMAHA WR 250F 2006  Owners Manual 4 - 211
ENGAC MAGNETO AND STARTER CLUTCH
9. Install:
Washer (rotor)
Nut (rotor) 
1 
Use the sheave holder 
2.
NOTE:Tighten the rotor nut to 65 Nm
(6.5 mkg, 47 ftlb), loosen and
retighten the rotor

Page 618 of 900

YAMAHA WR 250F 2006  Owners Manual 5 - 13
CHASFRONT WHEEL AND REAR WHEEL
EC595000ASSEMBLY AND INSTALLATION
Front wheel
1. Install:
Bearing (left) 
1 
Spacer 
2 
Bearing (right) 
3 
Oil seal 
4 
NOTE:Apply the lithium soap base gre

Page 622 of 900

YAMAHA WR 250F 2006  Owners Manual 5 - 17
CHASFRONT WHEEL AND REAR WHEEL
Rear wheel
1. Install:
Bearing (right) 
1 
Circlip 
2 
Spacer 
3 
Bearing (left) 
4 
Oil seal 
5 
NOTE:Apply the lithium soap base grease
on the bearing and