2005 YAMAHA WR 250F oil in the fork

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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 646 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 65
CHASFRONT FORK
EC558000FRONT FORK DISASSEMBLY
Extent of removal:
1 Oil seal removal
2 Damper rod removal
Extent of removal Order Part name Q’ty Remarks
FRONT FORK DISASSEMBLY
1  Front fork ca

Page 650 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 69
CHASFRONT FORK
EC556000HANDLING NOTE
NOTE:The front fork requires careful atten-
tion. So it is recommended that the
front fork be maintained at the deal-
ers.
CAUTION:
To prevent an accidental

Page 652 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 71
CHASFRONT FORK
EC553201Inner tube
1. Remove:
Dust seal 
1 
Stopper ring 
2 
Using slotted-head screw-
driver.
CAUTION:
Take care not to scratch the inner
tube.
2. Remove:
Inner tube 
1 
Oil

Page 654 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 73
CHASFRONT FORK
EC554200Base valve
1. Inspect:
Valve assembly 
1 
Wear/damage 
→ Replace.
O-ring 
2 
Damage 
→ Replace.
EC554400Fork spring
1. Measure:
Fork spring free length 
a 
Out of

Page 658 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 77
CHASFRONT FORK
5. Install:
Spring guide 
1 
Locknut 
2 
To damper rod 
3.
NOTE:Install the spring guide with its cut
a facing upward.
With its thread 
b facing upward,
fully finger tighten

Page 660 of 864

YAMAHA WR 250F 2005  Owners Manual 5 - 79
CHASFRONT FORK
9. Install:
Slide metal 
1 
Oil seal washer 
2 
To outer tube slot.
NOTE:Press the slide metal into the outer
tube with fork seal driver 
3.
Fork seal driver:
YM-01442/90890-01
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