Crankcase, Cylinder

Fits FS 500, FS 550, FS 550 L.

This drawing carries 2 bore sizes — Ø 44 mm , Ø 46 mm . Not interchangeable — measure your cylinder before ordering. The catalogue lists them on one sheet for one machine and never says which variant each belongs to, so this guide does not either.

Tap a numbered callout to jump to that part. Scroll or pinch to zoom.

Parts (28)

Pos	Part number	Description	Qty
1	4116 020 2116	Crankcase	1
2	9371 470 2610	Cylindrical pin 5x18	2
3	1110 122 3900	Elbow connector	1
4	9523 003 4260	Grooved ball bearing 15x35x13	1
5	9465 620 2620	Snap ring 37	1
6	9503 003 0340	Grooved ball bearing 6202 → replaced by 9503 003 0346 TI 6/2001	1
7	9022 371 1020	Spline screw IS-M5x20 → replaced by 9022 371 1050 TI 30/2004	4
8	4116 029 0500	Gasket	1
9	9640 003 1600	Oil seal 15x29.6x4	1
10	9640 003 1340	Oil seal 13x22x5	1
11	4116 030 0400	Crankshaft	1
12	1120 036 8500	Woodruff key 2x3.7	1
13	4116 029 2305	Cylinder gasket	1
14	9512 003 2340	Needle cage 10x14x13	1
15	4116 020 1203	Cylinder with piston Ø 44 mm	1
16	4116 020 1215	Cylinder with piston Ø 46 mm	1
17	4116 030 2000	Piston Ø 44 mm	1
18	4116 030 2005	Piston Ø 46 mm	1
19	4116 034 3000	Piston ring Ø 44x1.2 mm	2
20	4116 034 3005	Piston ring Ø 46x1.2 mm	2
21	1110 034 1500	Piston pin 10x6x32	1
22	9463 650 1000	Snap ring 10	2
23	9022 341 0900	Spline screw IS-M5x28	4
24	0000 400 7000	Spark plug NGK BPMR7A	1
24	1110 400 7005	Spark plug Bosch WSR 6 F	1
25	1128 020 9400	Decompression valve	1
26	4116 149 0600	Muffler gasket	1
Not numbered on the diagram — assemblies, kits and options
—	4116 007 1051	Set of gaskets	1

Parts are not interchangeable across engine series — check yours before ordering.

Wrong number or missing part for the FS 500, FS 550, FS 550 L? Report a correction →