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YAMAHA WR 250F 2009 User Guide WR 250F 2009 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52323/w960_52323-0.png YAMAHA WR 250F 2009 User Guide

Page 47 of 224

YAMAHA WR 250F 2009 User Guide 2-21
CABLE ROUTING DIAGRAM
A. Insert the end of the fuel tank breather hose into the hole in 
the steering stem.
B. Fasten the throttle cable, hot 
starter cable and rectifier/regula-
tor lead onto th

Page 64 of 224

YAMAHA WR 250F 2009 User Guide 3-11
ENGINE
CHECKING THE SILENCER AND 
EXHAUST PIPE
1. Inspect:•Gasket "1"
Damage →Replace.
INSTALLING THE SILENCER AND 
EXHAUST PIPE
1. Install: •Gasket 
• Exhaust pipe "1"
• Nut (exhaust p

Page 65 of 224

YAMAHA WR 250F 2009 User Guide 3-12
ENGINE
• Do not mix more than one type of ethylene glycol antifreeze con-
taining corrosion inhibitors for 
aluminum engine.
• Do not use water containing im-
purities or oil.
Handling notes

Page 66 of 224

YAMAHA WR 250F 2009 User Guide 3-13
ENGINE
ADJUSTING THE THROTTLE 
CABLE FREE PLAY
1. Check:• Throttle grip free play "a"
Out of specification →Adjust.
2. Adjust: • Throttle grip free play
Throttle grip free play adjustment

Page 70 of 224

YAMAHA WR 250F 2009 User Guide 3-17
ENGINE
5. Check:• Valve clearanceOut of specification →Adjust.
Checking steps:
a. Turn the crankshaft counterclock-
wise with a wrench.
b. Align the T.D.C. mark "a" on the  rotor with the ali

Page 73 of 224

YAMAHA WR 250F 2009 User Guide 3-20
CHASSIS
ADJUSTING THE FRONT BRAKE
1. Check:• Brake lever position "a"
2. Remove: • Brake lever cover
3. Adjust: • Brake lever position
Brake lever position adjustment 
steps:
a. Loosen the

Page 76 of 224

YAMAHA WR 250F 2009 User Guide 3-23
CHASSIS
4. Inspect:• O-ring "1" (drive chain)Damage →Replace the drive 
chain.
•Roller "2"
• Side plate "3" Damage/wear →Replace the 
drive chain.
5. Check: • Drive chain stiffness "a

Page 78 of 224

YAMAHA WR 250F 2009 User Guide 3-25
CHASSIS
ADJUSTING THE REAR SHOCK 
ABSORBER SPRING PRELOAD
1. Elevate the rear wheel by placing the suitable stand under the en-
gine.
2. Remove: • Rear frame
3. Measure: • Spring fitting leng

Page 80 of 224

YAMAHA WR 250F 2009 User Guide 3-27
CHASSIS
2. Inspect:• Bearing free playExist play →Replace.
CHECKING AND ADJUSTING THE 
STEERING HEAD
1. Place a stand under the engine to  raise the front wheel off the 
ground. WARNING! Secu

Page 86 of 224

YAMAHA WR 250F 2009 User Guide 3-33
ELECTRICAL
6. Install:• Battery
• Battery band
7. Connect: • Battery leads(to the battery terminals)
First, connect the positive lead "1", 
then the negative lead "2".
8. Check:• Battery
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