Service Manual

1. After removing retainer (Item 2), remove FCSV from
mixing body by pulling out with a pliers as shown. DO
NOT pull on lead wire of FCSV. Be careful not to loose
the O–ring (Item 4).
2. After removing float chamber body, remove retainer
(Item 27), weight (Item 28) and ball (Item 29). These
parts are very small. Be careful not to lose them.
3. Use a pliers to remove needle valve seat (Item 34) as
shown.
Figure 140
4. To remove pilot jet (Item 38), use a screwdriver that
has an exact fit to groove in pilot jet. Be careful not to
scratch the pilot jet.
Figure 141
Carburetor Inspection
Check the following items and repair or replace parts as
necessary
.
1. Check fuel passages (jets) and air passages (jets or
orifices) for clogging. If clogged, wash thoroughly
with
cleaning solvent or detergent and remove dirt with com-
pressed air. Do not use wire or anything else that will
scratch these parts.
2. Check diaphragms for damage and cracks.
3. Make sure needle valve operates with light force. Re-
pair o
r replace valve if is is hard to operate or is binding.
If there is fuel overflow, poor valve to seat contact should
be suspected.
4. Check fuel inlet filter (located above needle valve) for
clogging or damage.
Liquid Cooled Gas Engine
Page 3
– 74
Workman 3000/4000 Series