length YAMAHA WR 250F 2006 User Guide

YAMAHA WR 250F 2006 User Guide WR 250F 2006 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52334/w960_52334-0.png YAMAHA WR 250F 2006 User Guide

Page 298 of 900

YAMAHA WR 250F 2006 User Guide 3 - 91
INSP
ADJ
EC36K000REAR SHOCK ABSORBER 
INSPECTION
1. Inspect:
Swingarm smooth action
Abnormal noise/unsmooth
action 
→ Grease the pivoting
points or repair the pivoting
points.
Damage/oil lea

Page 408 of 900

YAMAHA WR 250F 2006 User Guide 4 - 67
ENGCAMSHAFTS
5. Remove:
Exhaust camshaft 
1 
Intake camshaft 
2 
NOTE:Attach a wire 
3 to the timing chain to
prevent it from falling into the crank-
case.
1
2
3
INSPECTION
Camshaft
1. Inspec

Page 442 of 900

YAMAHA WR 250F 2006 User Guide 4 - 101
ENGVALVES AND VALVE SPRINGS
Valve spring
1. Measure:
Valve spring free length 
a 
Out of specification 
→ 
Replace.
Free length 
(valve spring):
Intake:
37.81 mm (1.49 in)
<Limit>: 
36.81 m

Page 472 of 900

YAMAHA WR 250F 2006 User Guide 4 - 131
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 678 of 900

YAMAHA WR 250F 2006 User Guide 5 - 73
CHASFRONT FORK
EC554200Base valve
1. Inspect:
Valve assembly 
1 
Wear/damage 
→ Replace.
O-ring 
2 
Damage 
→ Replace.2
1
EC554400Fork spring
1. Measure:
Fork spring free length 
a 
Out

Page 760 of 900

YAMAHA WR 250F 2006 User Guide 5 - 155
CHASREAR SHOCK ABSORBER
3. Adjust:
•Spring length (installed)
Refer to “REAR SHOCK
ABSORBER SPRING PRE-
LOAD ADJUSTMENT” sec-
tion in the CHAPTER 3.
4. Tighten:
•Locknut 
1 
Rear shock

Page 804 of 900

YAMAHA WR 250F 2006 User Guide 6 - 41
–+ELECELECTRIC STARTING SYSTEM
5. Measure: 
•Brush length 
a 
Out of specification 
→ 
Replace the brushes as a set.
Min. brush length:
3.5 mm (0.14 in)
6. Measure:
•Brush spring force

Page 882 of 900

YAMAHA WR 250F 2006 User Guide 7 - 33
TUNSETTING
EC72B000Rear suspension setting
The rear suspension setting should
be made depending on the rider’s
feeling of an actual run and the cir-
cuit conditions.
The rear suspension setti

Page 884 of 900

YAMAHA WR 250F 2006 User Guide 7 - 35
TUNSETTING
Setting of spring after 
replacement
After replacement, be sure to adjust
the spring to the set length [sunken
length 90 ~ 100 mm (3.5 ~ 3.9 in)]
and set it.
1. Use of soft spring

Page 886 of 900

YAMAHA WR 250F 2006 User Guide 7 - 37
TUNSETTING
EC72Q000Rear shock absorber setting parts
•Rear shock spring 
1
* For EUROPE
** For AUS, NZ and ZA
NOTE:The I.D. color 
a is marked at the end
of the spring.
•Extent of adjustmen
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