Yamaha XJR1300(L) 99, Service Manual

Page: 206 / 338

5-4
CARB
CARBURETORS
EAS00486
CHECKING THE CARBURETORS
The following procedure applies to all of the car-
buretors.
1. Check:
carburetor body
float chamber
jet housing
Cracks / damage
Replace.
2. Check:
fuel passages
Obstruction
Clean.
a. Wash the carburetor in a petroleum-based
solvent. Do not use any caustic-carburetor-
cleaning solution.
b. Blow out all of the passages and jets with
compressed air.
3. Check:
float chamber body
Dirt
Clean.
4. Check:
float chamber rubber gasket
Cracks / damage / wear
Replace.
5. Check:
float
Damage
Replace.
6. Check:
needle valve 1
needle valve seat 2
Damage / obstruction / wear Replace the
needle valve, needle valve seat and O-ring
as a set.
7. Check:
O-ring 3
Damage / wear Replace the needle valve,
needle valve seat and O-ring as a set.
8. Check:
piston valve
Damage / scratches / wear
Replace.
rubber diaphragm
Cracks / tears
Replace.
9. Check:
vacuum chamber cover
piston valve spring
jet needle holder
Cracks / damage
Replace.