2007 YAMAHA WR 250F AUX

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Page 336 of 912

YAMAHA WR 250F 2007  Owners Manual 3 - 125
INSP
ADJ
BATTERY INSPECTION AND 
CHARGING
WARNING
Batteries generate explosive
hydrogen gas and contain electro-
lyte which is made of poisonous
and highly caustic sulfuric acid. 
Therefore, a

Page 337 of 912

YAMAHA WR 250F 2007  Owners Manual INSP
ADJ
3 - 126
BATTERIE KONTROLLIEREN UND 
LADEN 
WARNUNG
Die in der Batterie enthaltene
Schwefelsäure ist giftig und stark
ätzend. Außerdem entsteht beim
Laden der Batterie explosives
Wasserstof

Page 338 of 912

YAMAHA WR 250F 2007  Owners Manual 3 - 127
INSP
ADJ
1. Remove: 
Seat
2. Disconnect: 
Battery leads
(from the battery terminals)
CAUTION:
First, disconnect the negative bat-
tery lead 1, and then the positive
battery lead 2.
3. Remove

Page 352 of 912

YAMAHA WR 250F 2007  Owners Manual 3 - 141
INSP
ADJ
6. Install:
Battery
Battery band
7. Connect:
Battery leads
(to the battery terminals)
CAUTION:
First, connect the positive lead 1,
then the negative lead 2.
8. Check:
Battery term

Page 356 of 912

YAMAHA WR 250F 2007  Owners Manual 3 - 145
INSP
ADJ
REPLACING THE HEADLIGHT 
BULBS
1. Remove:
Headlight
Refer to “SEAT, FUEL TANK
AND SIDE COVERS”.
2. Remove:
Headlight bulb holder cover 
1 
3. Remove:
Headlight bulb holder 
1

Page 358 of 912

YAMAHA WR 250F 2007  Owners Manual 3 - 147
INSP
ADJELECTRICAL
ADJUSTING THE HEADLIGHT 
BEAMS
1. Adjust:
Headlight beam (vertically)
Adjusting steps:
Turn the adjusting screw 
1 in
direction 
a or 
b.
Direction 
a Headlight beam is 
r

Page 362 of 912

YAMAHA WR 250F 2007  Owners Manual 4 - 3
TUNSETTING
CAUTION:
The carburetor is extremely sen-
sitive to foreign matter (dirt,
sand, water, etc.). During instal-
lation, do not allow foreign mat-
ter to get into the carburetor.
Always

Page 364 of 912

YAMAHA WR 250F 2007  Owners Manual 4 - 5
TUNSETTING
Effects of the setting parts on the 
throttle valve opening
ÈClosed
ÉFully open
1Pilot jet
2Throttle valve cutaway
3Jet needle
4Main jet
1/2 3/4 1/4 1/8
1
2
3
4
ÈÉ
Main system
The