2005 YAMAHA WR 250F transmission oil

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Page 554 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 229
ENGCRANKCASE AND CRANKSHAFT
CRANKCASE BEARING
Extent of removal:
1 Crankcase bearing removal
Extent of removal Order Part name Q’ty Remarks
CRANKCASE BEARING REMOVAL
Preparation for removal

Page 566 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 241
ENGCRANKCASE AND CRANKSHAFT
2. Check:
Shifter operation
Transmission operation
Unsmooth operation 
→ 
Repair.
3. Install:
Oil strainer 
1 
Bolt (oil strainer) 
2 
T R..10 Nm (1.0 m · kg

Page 568 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 243
ENGCRANKCASE AND CRANKSHAFT
6. Tighten:
Hose guide 
1 
Clutch cable holder 
2 
Bolt (crankcase) 
3 
NOTE:Tighten the crankcase tightening
bolts in stage, using a crisscross pat-
tern.
T R..

Page 576 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 251
ENGTRANSMISSION, SHIFT CAM AND SHIFT FORK
2. Inspect:
Shift cam 
1 
Segment 
2 
Wear/damage 
→ Replace.
3. Check:
Shift fork movement
Unsmooth operation 
→ 
Replace shift fork.
NOTE:For

Page 578 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 253
ENGTRANSMISSION, SHIFT CAM AND SHIFT FORK
2. Install:
2nd wheel gear (28T) 
1 
4th wheel gear (25T) 
2 
3rd wheel gear (28T) 
3 
5th wheel gear (22T) 
4 
1st wheel gear (31T) 
5 
O-ring

Page 580 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 255
ENGTRANSMISSION, SHIFT CAM AND SHIFT FORK
5. Install:
Shift fork 1 (L) 
1 
Shift fork 2 (C) 
2 
Shift fork 3 (R) 
3 
Shift cam 
4 
To main axle and drive axle.
NOTE:Apply the molybdenum d

Page 590 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 9
CHASFRONT WHEEL AND REAR WHEEL
EC593000REMOVAL POINTSEC523101Rear wheel
1. Remove:
Wheel 
1 
NOTE:Push the wheel forward and remove
the drive chain 
2.
EC513201Wheel bearing (if necessary)
1. R

Page 600 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 19
CHASFRONT WHEEL AND REAR WHEEL
4. Install:
Collar 
1 
NOTE:Apply the lithium soap base grease
on the oil seal lip.
5. Install:
Wheel
NOTE:Install the brake disc 
1 between the
brake pads 
2 c
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