2006 YAMAHA WR 250F AUX

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Page 248 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 41
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ADJ
(Except for USA and CDN)
CAUTION:
Do not add any chemical addi-
tives or use oils with a grade of
CD a or higher.
Do not use oils labeled
“ENERGY CONSERVING II” b
or higher. Engi

Page 256 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 49
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VALVE CLEARANCE INSPECTION 
AND ADJUSTMENT
NOTE:The valve clearance should be
adjusted when the engine is cool to
the touch.
The piston must be at Top Dead
Center (T.D.C.) on compres

Page 258 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 51
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ADJ
5. Check:
Valve clearance
Out of specification 
→ Adjust. 
Valve clearance (cold):
Intake valve:
0.10 ~ 0.15 mm 
(0.0039 ~ 0.0059 in)
Exhaust valve:
0.17 ~ 0.22 mm 
(0.0067 ~ 0.0087

Page 260 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 53
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6. Adjust:
Valve clearance
Adjustment steps:
Remove the camshaft (intake
and exhaust).
Refer to “CAMSHAFTS” section
in the CHAPTER 4.
Remove the valve lifters 
1 and
the pads 
2

Page 262 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 55
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ADJ
EXAMPLE:
Installed pad number = 148
Rounded off value = 150
NOTE:Pads can only be selected in
0.05 mm increments.
Locate the rounded-off value
and the measured valve clear-
ance in th

Page 265 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 58
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ADMISSION
ECHAPPEMENT
JEU MESURENUMERO DE PLAQUETTE MONTEE
120 125 130 135 140 145 150 155 160 165 170175 180 185 190 195 200 205 210 215 220 225 230 235 240
0,00 à 0,04 120 125 130 1

Page 274 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 67
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3. Install:
Protector (rear brake)
Reservoir float (front brake)
Diaphragm
Brake master cylinder cap
EC362040FRONT BRAKE ADJUSTMENT
1. Check:
Brake lever position 
a 
2. Remove:


Page 276 of 900

YAMAHA WR 250F 2006  Owners Manual 3 - 69
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ADJ
EC364002REAR BRAKE ADJUSTMENT
1. Check:
Brake pedal height 
a 
Out of specification 
→ Adjust.
2. Adjust:
Brake pedal height
Brake pedal height a:
5 mm (0.20 in)
Pedal height adjus