Yamaha XT550J - Page 87

Primary carburetor
1. Remove the starter plunger.
2. Remove the primary
carbo cap.
3. Remove the shaft securing bolts.
NOTE: ______________________ __
Pay attention when removing the shaft secur-
ing bolts, pressing the springs with one hand
as they will turn.
4. Remove the drum wire assembly.
5. Remove the wire holder springs.
6.
Pull out the shaft, and remove the
piston.
7. Remove the float cham ber .
8. Remove the valve seat, the needle jet,
the main jet, and the pilot jet.
Secondary carburetor
1. Remove the secondary carbo cap.
2. Remove the secondary piston.
4-5
3. Remove the needle jet out of the suction
piston.
NOTE: _____________________ _
1. Loosen the jet needle tightening screw
and pull
out the jet needle, then they can
be pulled out with the needle holder.
2. Pay close attention to the small spring
supporting the jet needle; it may jump
out when the jet needle is removed from
the secondary piston.
4. Assemble the secondary carbo cap and
the secondary piston, then move and in-
spectthem.
5. Remove the blind plug and the needle
jet.
D. Inspection
1. Examine the carburetor body and fuel
passages.
If they are contaminated,
wash the carburetor
in a petroleum-
based solvent.
Do not use any caustic
carburetor cleaning solutions.
Blowout
all passages and jets with compressed
air.