Stihl 1139 · Section B · 2 of 13 · 23 parts

Cylinder, Muffler

Fits MS 171, MS 171 C.

This drawing carries 2 bore sizes — Ø 37 mm = 30.1 cc (MS 171), Ø 38 mm = 31.8 cc (MS 171, MS 181). Not interchangeable — measure your cylinder before ordering.

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Parts (23)

Pos	Part number	Description	Qty
1	1139 020 1204	Cylinder with piston Ø 38 mm — MS 171, MS 181	1
2	1139 030 2006	Piston Ø 38 mm — MS 171, MS 181	1
3	1130 034 3002	Piston ring Ø 38x1.2 mm — MS 171, MS 181	1
4	1139 034 1500	Piston pin 10x6.5x23	1
5	9463 650 1000	Snap ring 10	2
6	9075 478 4195	Pan head self-tapping screw IS-D5.3x41	4
7	1139 030 0401	Crankshaft	1
8	9503 003 0312	Grooved ball bearing 6002	2
9	9638 003 1581	Oil seal 15x25x5	2
10	9639 003 1585	Oil seal 15x25x5	2
11	9468 621 1520	Circlip 15x1	1
12	1139 021 2503	Engine pan	1
13	0000 400 7011	Spark plug NGK CMR6H	1
14	1139 140 0602	Muffler	1
15	1139 140 0601	Muffler	1
16	1139 141 9000	Screen	1
17	1139 141 3201	Cooling plate	1
18	9075 478 4085	Pan head self-tapping screw IS-D5x18	2
19	1135 145 9002	Plug	2
20	1139 020 1200	Cylinder with piston Ø 37 mm — MS 171	1
21	1139 030 2003	Piston Ø 37 mm — MS 171	1
22	1130 034 3003	Piston ring Ø 37x1.2 mm — MS 171	1
23	0783 830 2000	Tube of sealant Dirko HT red	1

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

Wrong number or missing part for the MS 171, MS 171 C? Report a correction →