1975 · Engine Parts List

250 5-Speed Engine

MC 250 · 5-Speed Gearbox · 174 parts

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Item No.	Part No.	Description	250
1	3349	Crankcase right hand	1
2	3350	Guide bush for pawl pin	1
3	331	Guide bush	1
4	1895	Pin B 8x14	2
5	1787	Stud M 8x28 Din 940	4
6	3352	Crankcase left hand	1
7	1831	Tension pin 8x10 Din 7346	2
8	1888	Pin 5 h x 14 Din 7	1
9	3353	Inside ring	1
10	398	Crankcase cover right hand	1
11	3355	Crankcase cover left hand	1
12	400	Oil drain plug complete	1
13	3498	Crankcase gasket	1
14	3356	Crankcase cover gasket left	1
15	2969	Crankcase cover gasket right	1
16	3499	Ventilation pipe	1
17	1667	Hexagon nut M 6 Din 934	1
18	407	Sealing ring	7
19	408	Screw plug M 20x1.5 Din 910	1
20	410	Sealing ring A 14x18 Din 7603	1
21	409	Sealing ring A 20x24 Din 7603	1
22	1533	Cylinder head screw M 6x18 Din 84	1
23	1546	Cylinder head screw M 6x85 Din 84	2
24	1539	Cylinder head screw M 6x40 Din 84	7
25	1538	Cylinder head screw M 6x35 Din 84	4
26	1537	Cylinder head screw M 6x28 Din 84	3
27	1552	Cylinder head screw M 8x16 Din 84	1
28	430	Sealing ring A 8x14 Din 7603	1
29	2981	Crankshaft complete	1
30	424	Needle bearing KBK 18x22x24	1
31	425	Ball bearing 6305 Din 625	1
32	693	Ball bearing 3305 Din 625	1
33	547	Oil seal 32x52x7/9	1
34	3469	Oil seal 25x52x8	1
35	713	Spacer ring	1
36	3470	Duplex sprocket	1
37	504	Lock washer	1
38	505	Sleeve pinion nut	1
39	522	Piston 66.95	1
40	523	L-ring	1
41	535	Piston pin	1
42	536	Piston pin clip	2
43	2500	Cylinder cpl with exhaust manifold	1
44	2502	Cylinder head	1
45	65	Cylinder head gasket	1
46	721	Cylinder base gasket	1
47	2967	Cylinder head stud	5
48	1705	Spring washer B 8 Din 127	9
49	1670	Hexagon nut M 8 Din 934	4
50	78	Hexagon nut M 8 Din 6330	5
51	3386	Clutch guide	1
52	725	Clutch push pin	1
53	1869	Ball	14
54	455	Push pin nut	1
55	443	Duplex primary chain 3/8x7/32	1
56	444	Thrust washer	1
57	3389	Bush	1
58	2580	Clutch body	1
59	447	Lock washer	1
60	448	Clutch nut	1
61	449	Cup spring	20
62	3396	Outer clutch disc	6
63	3390	Inner clutch disc	6
64	3391	Terminal disc	1
65	461	Lock ring	2
66	462	Clutch spindle	1
67	464	Sealing ring	1
68	437	Clutch lever	1
69	1750	Washer B 6.4 Din 9021	1
70	1667	Hexagon nut M 6 Din 934	1
71	3398	Clutch housing (duplex T=41)	1
72	730	Kickstarter pinion	1
73	731	Ratchet spring	1
74	732	Spring cup	1
75	733	Snap spring	1
76	729	Kickstarter ratchet wheel	1
77	1906	Oval head rivet 4x10 Din 662	8
78	3433	Mainshaft "MG"	1
79	3434	3rd gear on mainshaft "M" T=24	1
80	3435	4th gear on mainshaft "M" T=26	1
81	3706	Spacer ring	1
82	492	Retainer ring	3
83	3436	Sleeve pinion "M" T=28	1
84	3454	Sleeve pinion plug	1
85	3437	Layshaft "M" T=17	1
86	3456	Washer 2nd gear	1
87	512	538 shim 0.2, 0.3 mm	1
88	3438	1st gear on layshaft "M" T=26	1
89	513	Bearing HK-1612	1
90	3439	2nd gear on layshaft "M" T=23	1
91	3757	Needle bearing K 20 12	1
92	3461	Lock ring	1
93	499	Ball bearing 6005 Din 625	1
94	1852	Lock ring 47x1.75 Din 472	1
95	3462	Bearing bush	1
96	3463	Ball bearing 6006 2RS Din 625	1
97	1854	Lock ring 55x2 Din 472	1
98	3464	Spacer ring	1
99	3465	Sprocket T=13	1
100	1848	Lock ring A 29x1.5K	1
101	3466	Needle gauge K 17x21x13	3
102	749	Bush	1
103	3440	2nd gear on mainshaft "M" T=21	1
104	3441	1st gear on mainshaft "M" T=19	1
105	513	Needle bearing H K 1612	1
106	514	Needle bearing B K 1616	1
107	3442	Twin block gear on layshaft "M" T=21/19	1
108	3723	Washer 1st gear l/s	1
109	555	Gear change lever	1
110	556	Rubber pad	1
111	1570	Hexagon screw M 6x25 Din 933	1
112	1712	Spring B 6 Din 137	1
113	2503	Gear change crank	1
114	3399	Pull rod	1
115	3402	Shifting segment	1
116	511	Plug	1
117	3407	Shifting plate	1
118	3408	Gear rack	1
119	1824	Tension pin	2
120	572	O-ring	1
121	587	Lock ring	1
122	3410	Hooked ratchet	1
123	573	Return spring	1
124	576	Hooked ratchet spring	1
125	3411	Guide rail	2
126	3412	Flat head screw M 6x16 Din 923	2
127	3493	Flat head screw M 6x10 Din 923	2
128	1712	Spring washer B 6 Din 137	4
129	1667	Hexagon nut M 6 Din 934	4
130	3413	Gear selection fork spindle	1
131	3414	Gear selection fork	3
132	3415	Pawl pin	1
133	3422	Compression ring	1
134	410	Sealing ring A 14x18 Din 7603	1
135	3416	Locking screw	1
136	3417	Tension spring holding screw	1
137	1667	Nut M 6 Din 934	1
138	652	Kickstarter lever (upper)	1
139	2508	Kickstarter lever (lower)	1
140	1874	Ball	1
141	655	Tension spring	1
142	656	Rubber pad	1
143	1840	Lock washer 9 Din 6799	1
144	1816	Tension spring 3x10 Din 1481	1
145	3471	Kickstarter shaft	1
146	659	O-ring	2
147	1570	Hexagon screw M 6x25 Din 933	1
148	1704	Spring ring B 6 Din 127	1
149	666	Kickstarter return spring	1
150	588	Magneto housing complete	1
151	592	Rotor bolt	1
152	1714	Spring washer B 8 Din 137	1
153	1527	Cylinder head screw	1
154	1730	Washer 4.3 Din 125	1
155	1702	Spring ring B 4 Din 127	1
156	611	Magnet rotor	1
157	1534	Cylinder head screw AM 6x20 Din 84	3
158	1732	Spring ring B 6 Din 127	3
159	1704	Washer 6.4 Din 125	3
160	603	Spark plug	2
161	609	Contact breaker	1
162	613	Carburetor complete	1
163	681	Spacer tube	1
164	3143	Rubber flange	1
165	683	Clamp	3
166	343	Rubber sleeve	1
194	577	Cover plate	1
195	579	Locking plate	1
196	1564	Hexagon screw M 6x10 Din 933	1
197	614	Carburetor complete (alt)	-
198	467	Exhaust flange	1
199	298	Exhaust flange gasket	1
200	1635	Socket screw M 6x25 Din 912	1
201	1704	Spring ring B 6 Din 127	1

NOTES:

5-speed gearbox variant — single model column (MC 250 only)

Duplex primary chain and clutch housing differ from 4-speed variants

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