Yamaha XT250X 2008, Service Manual

Page: 218 / 282

CARBURETOR
6-7
Cracks/damage
→
Replace.
13.Check:
●
Carburetor air vent hose
●
Carburetor fuel drain hose
●
Fuel hoses
Cracks/damage/wear
→
Replace.
Obstruction
→
Clean.
Blow out the hoses with compressed air.
EAS26800
ASSEMBLING THE CARBURETOR
CAUTION:
ECA14110
●
Before assembling the carburetor, wash all
of the parts in a petroleum-based solvent.
●
Always use a new gasket.
1. Install:
●
Needle jet
●
Main jet holder
●
Main jet “1”
●
Pilot jet “2”
●
Needle valve seat “3”
2. Install:
●
Needle valve
●
Float “1”
●
Float pin “2”
NOTE:
Install the float pin in the reverse direction of ar-
row “a”.
3. Check:
●
Float height (dimention H) “a”
Remove the float chamber rubber gasket,
and measure the height from the float cham-
ber matching face to the float top face.
NOTE:
Temporarily lift the float, and check the oil level
when the needle valve end slightly touches the
float tongue.
Out of specification
→
Bend the loat tongue
“1” and adjust.
4. Install:
●
Float chamber
●
Pilot screw “1”
5. Install:
●
Piston valve
●
Jet needle holder
●
Jet needle kit “1”
1
3
2
1
2
a
Float height
11.9 mm (0.47 in)
Pilot screw turn out
2
–
1/2
a
1
1
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