2004 YAMAHA WR 250F check oil

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Page 576 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 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 580 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 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 660 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 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

Page 664 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 5 - 83
CHASFRONT FORK
20. Measure:
Oil level (left and right) 
a 
Out of specification 
→ Adjust.
* For EUROPE, AUS, NZ and ZA
NOTE:Be sure to install the spring guide 
2
when checking the oil leve

Page 714 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 5 - 133
CHASSWINGARM
3. Install:
Collar 
1 
To connecting rod 
2.
NOTE:Apply the molybdenum disulfide
grease on the collar and oil seal lips.
4. Install:
Connecting rod 
1 
Bolt (connecting rod) 
2

Page 745 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 6 - 8
–+ELECIGNITION SYSTEM
EC620000
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to ignition system failure

Page 750 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 6 - 13
–+ELECIGNITION SYSTEM
SPARK GAP TEST
1. Disconnect the ignition coil from
spark plug.
2. Remove the ignition coil cap.
3. Connect the dynamic spark
tester 
1 (ignition checker 
2) as
shown.


Page 756 of 864

YAMAHA WR 250F 2004  Manuale de Empleo (in Spanish) 6 - 19
–+ELECIGNITION SYSTEM
AC MAGNETO INSPECTION
1. Inspect:
Pickup coil resistance
Out of specification 
→ 
Replace.
Tester (+) lead →
 Red lead 1
 
Tester (–) lead →
 White lead 2
 
Pic
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