ASSEMBLY - TM-10-3930-607-150078

FUEL

E. ASSEMBLY (Fig. 3)

1. Place choke plate in air intake assembly with

poppet valve toward gasket surface.

2. Insert shaft and lever assembly.

3. With choke plate closed, align hole in shaft with

hole in plate.

4. Center the choke plate in a closed position and

tighten screw. Do not attempt to rivet threaded end of

screw.

5. Install vacuum cylinder assembly and new fibre

washer in air intake assembly.

6. Install new fuel valve seat and fibre washer.

7. Install fuel valve needle in seat, followed by

float and float axle. Insert tapered end of float axle (27)

into float bracket on side opposite slot and push through

the other side. Press float axle into slotted side until the

axle is centered in bracket.

Figure 4.

8. Set float level to the standard setting using a 6"

depth gauge. (Fig. 4) Do not bend, twist or apply

11. Install main jet and fibre washer in bottom of

pressure on the float body. With air intake assembly in

fuel bowl and seat firmly.

inverted position, as viewed from the free end of float,

12. Install power jet valve assembly.

float body should be centered at right-angle to bowl

13. Install main discharge jet into passage in

cover. The float setting is measured from the machined

outside bottom of fuel bowl.

surface of air intake assembly to top side of float body

14. Install lower plug and fibre washer in passage

at highest point. The standard setting for this carburetor

on outside bottom of fuel bowl, using a 1/2" wrench.

is 1-1/2 inches. To change the distance between float

15. Install well vent jet in top surface of fuel bowl

and the machined surface of air intake, bend float lever

assembly.

close to the float body.

16. If the fit of the throttle shaft is sloppy in the

9. Drive each of the lead plugs into channels until

throttle body and it is desired to use the same throttle

plug heads are flush with surface of the casting. Only

body for re-assembly of the carburetor, then it is

one or two light hammer blows are required to seal lead

absolutely necessary to install throttle shaft bushings. A

plug in channel. Avoid driving plugs too deep, otherwise

poor fitting throttle shaft will upset engine idle, cause

plug may block off other fuel passages.

incorrect throttle plate location in relation to the idle

10. Install idle jet in top surface of fuel bowl (no

discharge port, and allows air and dirt to be admitted

gasket is used).

into the throttle body around the shaft.

B-41