4.2
FUEL SYSTEM / CARBURETION
FUEL SYSTEM AND CARBURETION
BSR 42 Carburetor Exploded View
Ref Description Ref Description Ref Description Ref Description
1 Cover, Diaphragm 16 Guide, Cable 31 A-Float 46 Asm., Plunger
2 Spring 17 O-ring 32 Jet, Main 47 Spring
3 Diaphragm 18 Cover 33 Ring 48 Holder, Guide
4 Valve, Piston 19 Screw 34Holder, Jet 49Screw
5 Holder 20 A-Shaft, Throttle 35 Jet, Needle 50 Cover
6 Spring 21 Screw 36 O-ring 51 Spring
7 Washer 22 Bolt 37 Needle Guide 52 Asm., Diaphragm
8 Washer 23 Spring, Idle Adjust 38 Screw 53 Filter
9 Jet, Needle 24 O-ring 39 Screw 54 Jet, Pilot Air 2 (1.3)
10 O-ring 25 Screw, Adjust 40 Jet, Pilot 55 Jet, Pilot Air 1 (110)
11 Case 26 Pin, Float 41 Jet, Starter (42.5) 56 Jet, Main Air (120)
12 Spring 27 O-ring 42 Asm., Carburetor 57 Ring
13 Seal 28 Body, Float 43 Packing 58 E-ring
14 Ring 29 Screw 44 E-ring 59 O-ring
15 Valve, Throttle (105) 30 Screw 45 Cap 60 Screw
Refer to Page 4.4 for Optional Jet Part Numbers
Jet Needle
“E” Clip
Position
1
2
3
4
5
1
60
2
3
4
19
18
17
16
15
14
13
12
11
10
20
21
22
23
24
25
26
32
33
34
35
36
37
38
39
40
41
42
13
43
44
45
31
28
27
29
30
46
47
48
49
50
51
52
53
54
55
56
5
6
7
8
9
57
58
59