Stihl 1141 · Section B · 2 of 14 · 27 parts

Cylinder, Muffler

Fits MS 271, MS 271 C, MS 291, MS 291 C.

This drawing carries 2 bore sizes — Ø 44.7 mm = 50.2 cc (MS 261, MS 261 C-M, MS 261 C-MQ, MS 271 Farm Boss), Ø 47 mm = 55.5 cc (MS 291 Farm Boss). Not interchangeable — measure your cylinder before ordering.

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Parts (27)

Pos	Part number	Description	Qty
1	1141 020 1203	Cylinder with piston Ø 44.7 mm — MS 261, MS 261 C-M, MS 261 C-MQ, MS 271 Farm Boss	1
2	1141 020 1201	Cylinder with piston Ø 47 mm — MS 291 Farm Boss	1
3	1141 030 2012	Piston Ø 44.7 mm — MS 261, MS 261 C-M, MS 261 C-MQ, MS 271 Farm Boss	1
4	1141 034 3000	Piston ring Ø 44.7x1.2 mm — MS 261, MS 261 C-M, MS 261 C-MQ, MS 271 Farm Boss	2
5	1141 034 1502	Piston pin 10x6x32	1
6	9463 650 1000	Snap ring 10	2
7	1141 030 2011	Piston Ø 47 mm — MS 291 Farm Boss	1
8	1140 034 3000	Piston ring Ø 47x1.2 mm — MS 291 Farm Boss	2
9	1141 034 1503	Piston pin 10x6x35	1
10	9512 003 2330	Needle cage 10x14x13.5	1
11	9075 478 4725	Pan head self-tapping screw IS-D6x35	3
12	1141 028 0201	Pan head self-tapping screw IS-D6x50	1
13	1141 140 2500	Manifold	1
14	9022 313 0660	Spline screw IS-M4x12	3
15	1141 030 0401	Crankshaft	1
16	9523 003 4301	Grooved ball bearing 15x38x11	2
17	9638 003 1581	Oil seal 15x25x5	1
18	9639 951 1584	Oil seal 15x25x5	1
19	9468 621 1520	Circlip 15x1	1
20	1141 149 0600	Muffler gasket	1
21	1141 140 0611	Muffler	1
22	1141 140 0613	Muffler	1
23	1135 145 9002	Plug	2
24	1141 140 8100	Spark arresting screen	1
25	9039 475 0656	Self-tapping screw M4x9.6	1
26	9075 478 4085	Pan head self-tapping screw IS-D5x18	2
27	0783 830 2000	Tube of sealant Dirko HT red option	1

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

Wrong number or missing part for the MS 271, MS 271 C, MS 291, MS 291 C? Report a correction →