1
Nut, square, No. 6-36
27
Channel plug
2
Choke bracket
28
Throttle shaft and lever
3
Screw, fil hd, No. 8-36 x
29
Stop screw spring
4
Screw, with lockwasher (2 req)
30
Stop screw
5
Air intake body
31
Shaft seal retainer
6
Choke plate
32
Shaft seal
7
Screw, fil hd, No. 6-32 x 3/8
33
Throttle shaft bushing
8
Choke plate spring
34
Idle adjusting needle
9
Screw, with lockwasher (3 req)
35
Adjusting needle spring
10
Well seal washer
36
Flange gasket
11
Vent and idle well
37
Shaft hole plug
12
Bowl-to-intake gasket
38
Throttle body
13
Choke shaft and lever
39
Throttle plate
14
crew, fil hd, No. 8-32 x
40
Throttle plate screw
15
Float
41
Bowl-to-body gasket
16
Axle retainer plug
42
Venturi
17
Float axle
43
Screw, with lockwasher
18
Check valve
44
Idle channel bushing
19
Fuel valve and seat
45
Fuel bowl
20
Fiber washer (3 req)
46
Bowl channel plug
21
Bowl channel plug
47
Check valve, with jet
22
Main jet adjusting screw
48
Channel plug
23
Main jet
49
Pump
24
Fiber washer
50
Guide
25
Fiber washer
51
Spacer
26
Fuel screen
52
Pump spring
Figure 73. -Continued.
for this purpose. Remove the channel plug (48) and fiber washer (20) from the pump cylinder.
h. Screw the special check valve tool (par. 179) into the check valve (18) until firmly attached. Strike the crossbar
sharply with sliding weight to remove the check valve. Do not leave the check valve disk on the channel.
i. Unscrew and remove the main jet adjusting screw (22) and fiber washer (20). Remove the main jet (23) and fiber
washer (24). Unscrew and remove the channel plug (27) and fiber washer (25) from the fuel bowl. Then remove the fuel
screen (26) from the plug (27)..
j. Remove the two screws with lockwashers (43) and lift the fuel bowl (45), bowl-to-body gasket (41), and the venturi
(42) from the throttle body (38). Remove the idle channel bushing (44) only if it is obviously damaged and in need of
replacement.
k. Unscrew and remove the idle adjusting needle (34) and spring (35) from the throttle body. With the throttle
open, file off: the riveted ends of the throttle plate screws (40). Use a flat file with the edges ground smooth. Remove the
throttle plate screws (40) and throttle plate (39) from the throttle body. Re move the throttle shaft and lever (28), shaft seal
(32) and seal retainer (31). Remove the stop screw (30) and stop screw spring (29).
171
