2005 YAMAHA WR 250F clutch

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Page 450 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 125
ENGCLUTCH
EC4A3000REMOVAL POINTS
Clutch boss
1. Remove:
Nut 
1 
Lock washer 
2 
Clutch boss 
3 
NOTE:Straighten the lock washer tab and
use the clutch holding tool 
4 to hold
the clutch bos

Page 452 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 127
ENGCLUTCH
Friction plate
1. Measure:
Friction plate thickness
Out of specification 
→ 
Replace friction plate as a set.
Measure at all four points.
Friction plate thickness:
2.9 ~ 3.1 mm 
(

Page 454 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 129
ENGCLUTCH
EC4A5000ASSEMBLY AND INSTALLATION
Push lever shaft
1. Install:
Push lever shaft 
1 
Bolt (push lever shaft) 
2 
NOTE:Apply the lithium soap base grease
on the oil seal lip.
Apply

Page 456 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 131
ENGCLUTCH
4. Install:
Seat plate 
1 
Cushion spring 
2 
NOTE:Install the seat plate with its cham-
fered portion 
a facing the clutch
boss 
3.
Install the seat plate so that it is not
caug

Page 458 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 133
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 476 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 151
ENGBALANCER
BALANCER
Extent of removal:
1 Balancer shaft drive gear
2 Balancer shaft
Extent of removal Order Part name Q’ty Remarks
BALANCER REMOVAL
Preparation for removal Primary driven ge

Page 484 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 159
ENGOIL PUMP
OIL PUMP
Extent of removal:
1 Oil pump removal
2 Oil pump disassembly
Extent of removal Order Part name Q’ty Remarks
OIL PUMP REMOVAL AND 
DISASSEMBLY
Preparation for removal Pri

Page 506 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 181
ENGKICK SHAFT AND SHIFT SHAFT
2. Install:
Shift lever assembly 
1 
To shift guide 
2.
3. Install:
Shift lever assembly 
1 
Shift guide 
2 
NOTE:The shift lever assembly is
installed at the