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FUEL SYSTEM/CARBURETION
4.2
BST 34 CARBURETOR EXPLODED VIEW
1. Ring
2. E--Ring
3. Jet Needle
4. Ring
5. Diaphragm
6. Needle Jet
7. Screw
8. Spring Washer
9. Jet Block
10. Washer
11. Main Jet
12. Seal
13. Packing
14. E--Ring
15. Cap
16. Float Pin
17. Plate
18. O--ring
19. Screw
20. Float Body Assy.
21. Screw
22. Float Assy.
23. Screw
24. Needle Valve
25. O--Ring
26. Pilot Jet
27. Adjust Screw
28. Spring
29. Throttle Valve
30. Spring
31. Shaft
32. Screw
33. Throttle Shaft Assy.
34. Cable Guide
35. Screw
36. Cover
37. Plunger Cap
38. Spring
39. Plunger Assy.
40. Pilot Air Jet
41. Carburetor Assy.
42. Screw & Washer
43. Spring
44. Cover Assy.
45. Screw
Refer to Page 4.7 for Jet Part Numbers
1
2
3
4
5
Jet Needle
“E” Clip Position
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
26
25
24
17
23
22
18
19
20
21
27
28
29
12
30
31
32
33
34
35
36
37
38
39
40
41
400 Engine Carburetor
NOTE: Refer to the Parts Manual for available parts and part numbers.