Stihl 1123 · Section A · 1 of 18 · 22 parts

Engine

Fits MS 250, MS 250 C.

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Parts (22)

Pos	Part number	Description	Qty
1	1123 020 1209	Cylinder with piston Ø 42.5 mm	1
2	1123 020 1220	Cylinder with piston Ø 42.5 mm	1
3	1123 020 1227	Cylinder with piston Ø 42.5 mm	1
4	1123 030 2016	Piston Ø 42.5 mm	1
5	1123 034 3006	Piston ring Ø 42.5x1.2 mm	2
6	4119 034 1500	Piston pin 10x6.5x28	1
7	9463 650 1000	Snap ring 10	2
8	0000 988 5211	Connector	1
9	9512 003 2250	Needle cage 10x13x12.5	1
10	1123 030 0408 NLA	Crankshaft	1
10	1123 030 0410	Crankshaft	1
11	9503 003 0340	Grooved ball bearing 6202 → replaced by 9503 003 0346 TI 6/2001	2
12	9638 003 1581	Oil seal 15x25x5	2
12	9639 003 1585	Oil seal 15x25x5	2
13	9468 621 1520	Circlip 15x1	1
14	1123 021 2500	Engine pan	1
15	9075 478 4195	Pan head self-tapping screw IS-D5.3x41	4
16	1123 020 9400	Decompression valve	1
17	1122 025 2200	Plug	1
18	1110 400 7005	Spark plug Bosch WSR 6 F	1
18	0000 400 7000	Spark plug NGK BPMR7A	1
Not numbered on the diagram — assemblies, kits and options
—	0783 830 2000	Tube of sealant Dirko HT red not illustrated	1

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 NLA = withdrawn by STIHL before 2012.

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