Assembling The Carburetor - Yamaha XT250X Service Manual

Cracks/damage → Replace.
13.Check:
Carburetor air vent hose
G
Carburetor fuel drain hose
G
Fuel hoses
G
Cracks/damage/wear → Replace.
Obstruction → Clean.
Blow out the hoses with compressed air.
EAS26800

ASSEMBLING THE CARBURETOR

ECA14110
CAUTION:
Before assembling the carburetor, wash all
G
of the parts in a petroleum-based solvent.
Always use a new gasket.
G
1. Install:
Needle jet
G
Main jet holder
G
Main jet "1"
G
Pilot jet "2"
G
Needle valve seat "3"
G
1
3
2. Install:
Needle valve
G
Float "1"
G
Float pin "2"
G
NOTE:
Install the float pin in the reverse direction of ar-
row "a".
a
3. Check:
Float height (dimention H) "a"
G
Remove the float chamber rubber gasket,
and measure the height from the float cham-
2
1
2
6-7
ber matching face to the float top face.
Float height
11.9 mm (0.47 in)
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
G
Pilot screw "1"
G
Pilot screw turn out
2–1/2
1
5. Install:
Piston valve
G
Jet needle holder
G
Jet needle kit "1"
G
CARBURETOR
a
1