Stihl 1121 · Section B · 2 of 17 · 35 parts

Cylinder, Muffler

Fits MS 260, MS 260 C.

This drawing carries 2 bore sizes — Ø 44 mm (also listed for the 026), Ø 44.7 mm . Not interchangeable — measure your cylinder before ordering.

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Parts (35)

Pos	Part number	Description	Qty
1	1121 020 1217	Cylinder with piston Ø 44.7 mm	1
2	1121 030 2003	Piston Ø 44.7 mm	1
3	1121 034 3002	Piston ring Ø 44.7x1.2 mm	2
4	1121 034 1505	Piston pin 10x6x30	1
5	9463 650 1000	Snap ring 10	2
6	0000 953 0818	Stud M5	2
7	1122 025 2200	Plug	1
8	1121 020 1203	Cylinder with piston Ø 44 mm	1
9	1121 030 2001	Piston Ø 44 mm	1
10	1121 034 3010	Piston ring Ø 44x1.2 mm	2
11	9512 003 2252	Needle cage 10x13x12.5	1
12	1118 029 2306	Cylinder gasket 0.5 mm	1
13	1121 029 2305	Cylinder gasket 1 mm	1
14	9022 371 1020	Spline screw IS-M5x20	4
15	1128 020 9400	Decompression valve	1
16	1122 084 1405	Cover	1
17	1121 084 7100	Cap	1
18	1110 400 7005	Spark plug Bosch WSR 6 F	1
18	0000 400 7000	Spark plug NGK BPMR7A	1
19	1121 141 6500	Spacer plate	1
20	1121 141 3200	Cooling plate	1
21	1118 149 0600	Muffler gasket	1
23	1121 145 0802	Exhaust casing	1
24	9022 341 0980	Spline screw IS-M5x16	2
25	9022 341 0980	Spline screw IS-M5x16	2
26	9022 341 0960	Spline screw IS-M5x12 → replaced by 9022 341 0980 TI 3/2006	2
27	9022 341 0960	Spline screw IS-M5x12 → replaced by 9022 341 0980 TI 3/2006	2
28	1121 140 0606	Muffler	1
29	1121 140 0803	Exhaust casing	1
30	1118 141 9005	Screen	1
31	9099 021 0810	Self-tapping screw 4.2x9.5	1
32	1121 140 0605	Muffler	1
33	1121 145 0805	Exhaust casing	1
Not numbered on the diagram — assemblies, kits and options
—	1121 007 1042	Mounting kit catalytic converter option	1
—	1121 007 1050	Set of gaskets option	1

2012 service parts catalogue. Parts are not interchangeable across engine series — check yours before ordering.

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