I wouldn't bet my life on it, but I'd be fairly sure that the parts lists on the Partzilla website are for US models.

If you use the CMSNL website (they're located in Holland), they will state which model you are looking at.

Partzilla would show US market fishes .
A lot of CMSNL lists are for US market too , but not all .
Later part numbers in US books had an extra 00 suffix to the rest of the world .
for example 214-11633-00-00 for US , and 214-11633-00 for other markets .
I'm not exactly sure when the US added the extra zero's , but it might not have
happened until later in the 70's , as I have a DT3 / RT3 supplement from US ,
and it still hadn't surfaced then .
I may have been wrong , about your manual , but from sales brochures AT 1's
seemed to have a different baffle arrangement from first year to later years .
First year seems to have a stinger , ( which we saw through to 73 AT3 ) , and
subsequently seemed to use a CT style baffle . Just make sure your parts book is
for your model year of your actual bike .

Quick question for you. I recently acquired a collection of 70 old Yamaha microfiches, some of old 2-stroke Enduros. I will attach the list of microfiches to his post. If you see any that may be useful for the website let me know and I will photograph them and attempt to post them in the Tech Library.

70 used microfiche 37 of the are for the 2 stroke enduros from the late '60's and mid '70s and the rest are for the yamaha XTseries 125cc to 600cc
some of the more interesting ones are
L5T / L5TA 1969 1970
YL2 / YL2C / YL2CM 1967 1968
HT1 / HT1B / HT1BM /1970 1971
LT2 / LT2M 1972 1973

AT1E / AT1M 1969
AT1B / CT1B AT1MB 1970
AT1C /AT1MX CT1C 1971
AT2 / CT2 AT3 CT3 1972 1973
DT1 1969
DT1B / DT1S / DT1C /DT1C-MX 1969 1970
DT1E / DT1E-MX 1971
RT1 / RTM / RT1B / RT1MX 1970 1971
DT250B/C DT400B/C 1975 1976
DT2 / RT2 / DT3 / RT3 1972 1973
DT250E / DT400E 1978
DT250D / DT400D 1977
DT250F 1979
DT250A / DT360A 1974
DT175A / DT175B 1974 1975
DT175C 1976
CT1 1969DT175E 1978
DT175F 1979
DT175G 1980
DT175H 1981 DT125E 1978DT125A /DT125B 1974 1975
DT125C 1976
DT125F 1979
DT125G 1980
DT125H 1981 DT100A DT100B 1974 1975
DT50
DT80H / J / K 1981 1982 1983
DT100C 1976
DT5U DTL/C 1988
DT50W 1989
DT50A DTL/C 1990
DT100D 1977
DT100E / F / G 1978 1979 1980
DT100 H / J / K 1981 1982 1983
XT125J 1982
XT125K /KC 1983
XT200J 1982
XT200K /KC 1983
XT225D /DC 1992

XT250J 1980
XT250H1981
XT250J 1982
XT250K / KC 1983

XT250L /LC 1984
XT350N / NC 1985
XT350S / SC 1986
XT350T / TC 1987
XT350U /UC 1988
XT350 W / WC1989
XT350A /AC 1990
XT350B /BC 1991
XT350D / DC 1992
XT500C 1976

XT500D 1977
XT500E -205001 1978
XT500E 1978
XT500F 1979
XT500 1980
XT500H 1981
XT55J 1982
XT550K 1983
XT600L LC / N / NC 1984 1985
XT600S / SC 1986
XT600T /TC 1987
XT600U / UC 1988
XT600W / WC L1989
XT600 EA /EAC 1990
XT600EB /EBC 1991
XT600ED /EDC 1992

I can remember when microfiches were considered hi tech!

I still prefer them to some of today's computer scanning where you can only scroll over one page at a time.

The biggest issue with the Fischer’s is you really need a reader for them to be of much use. Or be able to read and print out each page (labor,of love!)

Thank you for the offer!

Photography is a hobby of mine. I have a copy stand, micro lens and a bellows unit and can photograph and reverse the black for white (so it looks like a typical page) if any of them are of use to the Forum. Standing offer. Mike

My son and I are going over a CT1. Of course it came with no Silencer or Pipe Outlet.
Anyone have one or both for sale?
Also, any after market substitutes?
Thank you.