This info may or may not be accurate. Typo or otherwise.
An updated version of this page may be found here:
1973
250
393000
U277000
501
5012
U5016
1974
250/4 GP
394 000
U278 000
400/4 GP
394 000
U406 000
440/4 GP
394 000
U441 000
1974
250/4 GS
340 000
K278 000
400/4 GS
340 000
K406 000
440/4 GS
340 000
K441 000
1975
250/5 NG
321 000
M321 0000
400/4 NG
321 000
U322 0000
440/4 NG
321 000
U320 0000
250/4 GS
340 000
K278 000
400/4 GS
340 000
K407 000
440/4 GS
340 000
K441 000
1975 1/2
250/5 NG
321 000
M321 0000
400/5 NG
323 000
G323 0000
440/5 NG
324 000
G324 0000
250/5 WR
321 000
G321 0000
400/5 WR
321 000
G323 0000
440/5 WR
321 000
G324 0000
250/5 WR
321 000
G321 0000
400/5 WR
321 000
G323 0000
440/5 WR
321 000
G324 0000
1977
250/5 AW
330 000
M321 0000
400/5 AW
331 000
R323 0000
440/5 AW
332 000
R324 0000
250/5 WR
230 000
G321 0000
400/5 WR
230 000
G323 0000
440/5 WR
230 000
G324 0000
1978
250/T MAGNUM
336 0000
MT336 0000
400/T MAGNUM
337 0000
RT337 0000
440/T MAGNUM
338 0000
RT338 0000
250/5 WR
230 000
G321 0000
400/5 WR
230 000
G323 0000
440/5 WR
230 000
G324 0000
1979
250/T MAGNUM II
341 0000
MT336 0000
400/T MAGNUM II
342 0000
RT337 0000
440/T MAGNUM II
343 0000
RT338 0000
250/T MAGNUM E
241 0000
GT236 0000
400/T MAGNUM E
241 0000
GT237 0000
440/T MAGNUM E
241 0000
GT238 0000
1980
250/M1
346 0000
MT346 0000
400/M1
347 0000
RT347 0000
440/M1
346 0000
RT348 0000
250/T MAGNUM E
241 0000
GT236 0000
400/T MAGNUM E
241 0000
GT237 0000
440/T MAGNUM E
241 0000
GT238 0000
1981
250/T
350 0000
350 0000
400/T
351 0000
351 0000
490/T
352 0000
352 0000
1982
250 MC
353 0000
353 0000
490 MC
354 0000
354 0000
250 GS Alpha E
353 0000
253 0000
490 GS Alpha E
354 0000
254 0000
1983
250/5
361 0000
362 0000
490 Sandpiper
362 0000
362 0000
1984 SC500 364 0000
1985
500
366 0000
266 0000
366 0000
1986
250
H3670144
HMX3670130
MODEL CODE
GP Grand Prix
NG New Generation
WR Wide Ratio
AW Adolf Weil
Magnum : Magnum Moto Cross
Magnum E : Enduro
Magnum II : Moto Cross
M1
: New Megaform frame
ENGINE CODE
U U Transmission Close
Ratio
K Wide Ratio Transmission
M 250 Close Ratio Transmission
G 400-440 Wide Ratio
Transmission
R 400-440 Close Ratio
Transmission
MT Countershaft moved back
MT1 250 Close Ratio Transmission
RT Countershaft moved back
RT1 400-440 Close Ratio Transmission
GT Countershaft moved back
GT1 250-400-440 Wide Ratio Transmission
MT1 Layshaft bearing
RT1 Layshaft Changed
GT1 New T1 hooked ratchet
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