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Stihl 1122 · Section L · 11 of 13 · 36 parts

Carburetor WJ-65A

Fits MS 640.

Position

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Parts (36)

PosPart numberDescriptionQty
1 1122 121 5603 Fixed jet 0.62 1
2 1110 121 5100 Inlet needle 1
3 1117 122 3005 Spring 1
4 1117 121 9200 Spindle 1
5 1117 121 5000 Inlet control lever 1
6 1114 122 7400 Round head screw 1
7 1115 121 5401 Valve jet 1
8 1122 121 0700 Cup plug 1
9 1116 129 0900 Gasket 1
10 1117 121 4700 Metering diaphragm 1
11 1122 121 0805 End cover 1
12 1121 122 7101 Screw 4
13 1115 121 3301 Throttle shutter 1
14 1115 122 7400 Round head screw 2
15 1128 122 3003 Spring 2
16 4203 122 3600 Sealing ring 1
17 1122 122 6802 Low speed adjustment screw 1
18 1122 122 6706 High speed adjustment screw 1
19 1122 121 7700 Clamp 1
20 1122 122 6200 Idle speed adjustment screw 1
21 1122 122 3200 Torsion spring 1
22 1122 120 7101 Throttle shaft with lever 1
23 1110 122 9300 Clip 1
24 1106 122 7400 Round head screw 1
25 1122 122 3205 Torsion spring 1
26 1122 120 7200 Choke shaft with lever 1
27 1117 122 9000 E-clip 1
28 1114 121 7800 Strainer 1
29 1115 121 4800 Pump diaphragm 1
30 1115 129 1100 Gasket 1
31 1115 120 0800 End cover 1
32 1121 122 7101 Screw 4
33 1122 121 2900 Choke shutter 1
34 1122 121 5608 NLA Fixed jet 0.60 option 1
Not numbered on the diagram — assemblies, kits and options
1122 120 0616 Carburetor WJ-65A → replaced by 1122 120 0621, 1122 120 0618 TI 1/1998 1
1122 007 1060 Set of carburetor parts 1

2012 service parts catalogue. Parts are not interchangeable across engine series — check yours before ordering. NLA = withdrawn by STIHL before 2012.

Wrong number or missing part for the MS 640? Report a correction →