2007 YAMAHA WR 250F check oil

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Page 604 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 197
ENGAC MAGNETO AND STARTER CLUTCH
3. Check:
Starter clutch operation
Install the starter clutch drive
gear 
1 onto the starter clutch
2 and hold the starter clutch.
When turning the starter

Page 648 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 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 650 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 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 658 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 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 662 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 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 742 of 912

YAMAHA WR 250F 2007  Owners Manual 6 - 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-A0948/
90890-0

Page 746 of 912

YAMAHA WR 250F 2007  Owners Manual 6 - 83
CHASFRONT FORK
20. Measure:
Oil level (left and right) 
a 
Out of specification 
→ Adjust.
NOTE:Be sure to install the spring guide 
2
when checking the oil level.
WARNING
Never fail to make

Page 826 of 912

YAMAHA WR 250F 2007  Owners Manual 7 - 5
–+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