Enduro Noob Seeking Tech Suggestions

Kinja'd!!! by "Fookin' Prawns" (gluglu)
Published 03/07/2017 at 19:39

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Kinja'd!!!

Hello! I’m in search of any technical advice, suggestions, or tips for old two-stroke enduros. I have a 1974 Yamaha DT100A that hasn’t been running for the last six months and I’m looking to start working on it myself to a) regain a form of in-town transportation and b) stop feeling guilty every time I see it in the parking lot. This is very much a long-term project since I don’t depend on the bike for commuting, just as a bit of fun on the side.

The rear locked up while riding at speed, about 50 MPH, and I skidded to a stop. I heard a squeaking noise right before the incident, then BAM - the rear wheel froze. There was difficulty disengaging the clutch and shifting gears immediately after, but I could start it up and putter along in first with no squeaking. Changing up to second locked the rear immediately, so I have a feeling it’s a gearbox issue. The kickstart can move even though the clutch is engaged.

Before you ask, I signed up for the forum at www.yamaha-enduros.com to seek some advice from people that know their stuff, as well as to gain access to some technical documents and manuals. I have a couple manuals for the bike, as well as some bike - and engine-savvy friends willing to help. If any of you have any tips or tricks, please feel free to share! I would appreciate it very much. 


Replies (6)

Kinja'd!!! "bob and john" (bobandjohn)
03/07/2017 at 20:07, STARS: 2

sounds Fooked

stick it in neutral, roll back and forth and confirm that the gear box is the only thing preventing it from rolling.

if its just that, then its time to split the cases my friend. that engine and trans are getting a rebuild dont matter if you like it or not.

Kinja'd!!! "LeftOfTheDial" (leftofthedial)
03/07/2017 at 21:45, STARS: 1

Find a different engine?

Back when I was looking into those I believe that a 175 or similar could swap right in. I’m sure you’d like the extra power.

That forum is great btw.

Otherwise it’s a fun kitchen table rebuild project.

Kinja'd!!! "Fookin' Prawns" (gluglu)
03/07/2017 at 22:49, STARS: 0

My apartment is going to smell like 2-stroke oil. Not that it’s a bad thing...

Kinja'd!!! "Fookin' Prawns" (gluglu)
03/07/2017 at 22:50, STARS: 0

Not a bad idea. The wiring is similar, I believe.

Kinja'd!!! "bob and john" (bobandjohn)
03/07/2017 at 22:55, STARS: 0

of its a 2 smoke?

they need rebuilding every so often anyways, so it might not be such a bad thing.

Kinja'd!!! "Fookin' Prawns" (gluglu)
03/07/2017 at 23:13, STARS: 0

The Yamaha Paperweight™