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1964 Yamaha YG1

10 Nov 2019 08:14 10 Nov 2019 19:34 by 69Lemans.
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1964 Yamaha YG1 #1
Just thought I’d show off my progress so far on my yg1 restoration... iv got a couple dt2’s and love em i ride them all the time... but this this little 80 has bedn a blast to work on its so simple can’t wait to ride it!
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10 Nov 2019 09:18
Makotosun
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1964 Yamaha YG1 #2
Sorry no pics. I am working on this right now. Sorry for the issue.

Mako

IF it isn't one thing, it's another.

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10 Nov 2019 15:29
RT325
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1964 Yamaha YG1 #3
"64 would/ should/ could be the first with no oil pump & a different shape tank. That tank might've stayed few years before the slimline tank. I had the first model same as the pic from work back in the day that you'll get a laugh from if you've not seen it before. Is your this same model or does it have an oil pump. Hell we were selling them faster than we could assemble them. Great times those. My one was just a rough trade in later in the "60's which dad used for years on the farm & wish i still had it. I'll try to load a pic but if it diesn't work then later when the system gets fixed.
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10 Nov 2019 15:31
RT325
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1964 Yamaha YG1 #4

yay it worked.
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10 Nov 2019 19:22
69Lemans
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1964 Yamaha YG1 #5
Yup no oil tank... and ya 63 64 and I think 65 had different shaped tank.... hard to get a good one...
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10 Nov 2019 20:25
MarkT
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1964 Yamaha YG1 #6
Wow... purty!

I have a 63 as well waiting on restoration.... in 64 the YG1 was the first model to get Autolube but I think it was introduced later in the year or maybe on the "street" version first.

I will check and see if I have a decent tank... I think I might have a couple.

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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10 Nov 2019 23:28 10 Nov 2019 23:31 by RT325.
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1964 Yamaha YG1 #7
Wow, looking good. Those gearchange thingys are a nighmare so hope yours is undamaged.
Possibly mentioned it before too that the fiber rotary valve can let go in how it's formed into the center drive & it'll still run but have little power. No missfire or anything, just very very flat.

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11 Nov 2019 03:38 11 Nov 2019 04:01 by 69Lemans.
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1964 Yamaha YG1 #8
MarkT!!! If you have a tank that is at least water tight I’d be in heaven that’s all I need to ride it now...So you think it’s a 63? I was not sure... Iv done tones of research but it’s hard to be sure so I was going off the original bill of sale was sold in 64 so I knew it could be a 63....

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11 Nov 2019 04:30
MarkT
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1964 Yamaha YG1 #9
Model years in the earlier 1960's were not as distinct as they became in later years. Often the dealer or DMV used the "year first sold" as the model year. Many bikes just didn't have significant changes and were made (or at least sold) over a few years.

An old Yamaha Service Bulletin had some of the early VIN's... keep in mind Yamaha literature had a lot of errors. I've seen an early non-autolube YG1T that was titled as a 1965 model... that was the "year first sold".

You might know this already, the YG1 was the "street" version with the dual seat... add the "T" and it was a "Trailmaster" YG1T which in the early days got you a skid plate and a single seat.

Add the "K" and it was an "autolube" model.

While Autolube was introduced in 1964 on the YG1, I seem to remember reading someplace that it was a late-year release... I have an (undated) Yamaha 80 brochure someplace that shows the YG1T and the MG1T and the YG1 was advertised as the first in the world with "autolube".

(That "first" claim was a little misleading as at least 10 years earlier Puch had a crankshaft gear-driven, throttle-cable controlled oil injection pump on their 250 "split single"... sold in the USA through the Sears Catalog as an "Allstate 250"... the oil injection wasn't called "autolube" and Yamaha's system was more refined but the operating principle was the same)



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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11 Nov 2019 09:36
69Lemans
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1964 Yamaha YG1 #10
Dude thanks for that info.... according to the vin info mine is a 1963 YG1T... also came with the skid plate and single seat... so even tho my title says 64 it a 63... lol o well we live and learn!
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