Carburetor Service - Toro Workman 3000 Series Service Manual

Carburetor Service

2
3
4
19
16
2 Nm
(1.6 ft–lb)
Figure 138
1. Vacuum hose kit
2. Retainer
3. Fuel cut solenoid valve (FCSV) 20. Clip
4. O–ring
5. Throttle wire bracket
6. Auto–choke body assembly
7. Gasket
8. Ring
9. Ring
10. Lever (cam follower)
12. Guide ring
13. Ring
14. Throttle lever
15. Guide ring
17. Pump cover
Disassemble and assemble parts as shown in illustra-
tion above. Also use the following instructions for specif­
ic points of disassembly, inspection and reassembly.
Note: All carburetors with a TEB identification mark
have a tamper–resistant idle Mixture Adjusting Screw
(MAS). These parts cannot be replaced: this would be
in violation of U.S. Environmental Protection Agency
(EPA) and California Air Resources Board (CARB) regu ­
lations. If these parts need replacement, the entire car ­
buretor must be replaced.
Workman 3000/4000 Series
1
5
7
6
3.5 Nm
12 13
(2.5 ft–lb)
10
15
14
18
17
9
8
6 Nm
(4 ft–lb)
3G80029
18. Diaphragm
19. Spring
21. Clip
22. Piston cover
23. Spring
24. Piston valve assembly
25. Float chamber body
26. O–ring
27. Retainer
28. Weight
29. Ball
30. Pin
31. Float
32. Needle valve
33. Retainer
34. Needle valve seat
Page 3 – 73 Rev. B
20
*47
*48
*49
*50
45
46
SEE NOTE BELOW
44
43
2 Nm
(1.6 ft–lb)
40
39
42
31
27
28
29
3.5 Nm
(2.5 ft–lb)
Figure 139
35. O–ring
36. Plug
37. Plate
38. Pilot jet
39. Main jet
40. O–ring
41. O–ring
42. Power jet
43. Jet block
44. O–ring
45. Idle speed adjusting screw (SAS)
46. Spring
*47. Mixture adjusting screw (MAS) (see Note)
*48. Spring (see Note)
*49. Washer (see Note)
*50. Gasket (see Note)
51. Mixing body
Carburetor Disassembly
IMPORTANT: Do not disassemble the following
items:
– Auto–choke body assembly (Item 6).
– Throttle valve and throttle shaft.
– Piston valve assembly (Item 24).
– Vapor separator tank plate.
Liquid Cooled Gas Engine
21
3.5 Nm
(2.5 ft–lb)
22
23
24
51
35
34
32
33
2.0 Nm
(1.6 ft–lb)
0.8 Nm
(0.6 ft–lb)
38
37
36
0.8 Nm
(0.6 ft–lb)
30
26
41
25
3G80030