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Yamaha 1969 at-1

29 May 2019 01:04
Animal44
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Yamaha 1969 at-1 #21
I do have a broken white wire as you can see in this picture anyone know where this goes and what's it for ?
Thanks
Dave
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31 May 2019 10:16
Animal44
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Yamaha 1969 at-1 #22
I think mine is the 125 mx version not the 125 -c version what you think guys and I have no log book or any paper work for the bike so don't know what the Reg is or anything all I got is the matching engine and frame number the serial number which is usually on a silver sticker is not there so how do I find out about the bike
Thanks
Dave

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31 May 2019 11:13
MarkT
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Yamaha 1969 at-1 #23
The number stamped in the frame and on engine can be looked up in the serial number lists in the Tech Library.

The AT1M (or MX) had a magneto and not the 12 volt starter/generator in you picture so you probably have an Enduro someone has stripped.

1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250

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31 May 2019 11:19
Animal44
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Yamaha 1969 at-1 #24
Thanks so what does that mean then the engine and frame number say at-1 on it and numbers all match up so do I have a at-1 enduros then thanks dave

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31 May 2019 12:06
MarkT
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Yamaha 1969 at-1 #25
You have to look up the complete number in the serial number lists...

Yamaha serial numbers for the AT1, AT2, and AT3 all started with "AT1-"

1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250

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09 Jun 2019 11:03
Animal44
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Yamaha 1969 at-1 #26
Hi guys just an update on my at-1 project .
I've sorted that horrible wiring mess and rewired the original loom just got one little wire not sure where it goes I've ordered new plug and points so they should come this week .fitted the chain on now as well getting there slowly hopefully I'll get to start her up for the first time in over 20 years in a couple of weeks time can't wait
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09 Jun 2019 15:53
RT325
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Yamaha 1969 at-1 #27
ok she's 12volt electric start. Battery box size is a big 12volt size as well. Starter solenoid is up there by the coil in this case. Need a battery to run--any little battery will do if you kick start it but a big one needed to use the start button--if all that's fitted. look forward to hearing it runs. When you mentioned a white wire i was thinking magneto charging wire --but no. Although probably tied up with 12 volt charging in a different way.

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27 Jun 2019 09:25
Animal44
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Yamaha 1969 at-1 #28
Hi guys the oil tank I have that came with the bike is scrap it's all dented badly and found 3 holes in it .( not good ) will the oil tank from the at2 fit my bike looks like it might but thought I'd ask here to make sure
Thanks
Dave

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27 Jun 2019 11:16
Mothersbaugh
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Yamaha 1969 at-1 #29
No; completely different in how it's mounted. There have been several AT-1E oil tanks on eBay for a while; some need paint but have very few dents and scratches. All are under $50 if I remember right, and they are probably ready for a best offer sale, since they have been on there so long...

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28 Jun 2019 00:37
Animal44
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Yamaha 1969 at-1 #30
Thanks for the reply on the oil tank .
I'm also trying to find a compatible electric start stop button so I can just press it and start instead of using kickstart all the time any ideas guys of one that is compatible with my bike
Thanks
Dave

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