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  • In order to help others find info on a particular bike, be sure to put the year, make or model of bike that you are asking a question about, in the Topic Title. This will allow people to pass by posts they have no interest in.

idle curiousity - trying to find what model my father had for 2 stroke yamaha 500

  • Thread starter Thread starter seanarthurmachado
  • Start date Start date
I'm pretty sure the RD350 didn't have electric start. The OP clearly describes pushing a starter button which dumped the bike (not sure of the TX500's exact arrangement, but most bikes of the era did not have a neutral starter lockout), so I think we can rule out the RD.

As we've said before, it was very, very common in the '70s for people to mix oil in the gas on bikes with 4-cycle engines, so it's hard to take that as much evidence one way or another.

You still see this strange belief pop up today -- there's a thread over on the V-Strom forum right now where some geezer is advocating oil in the gas as a cure for everything from spinal curvature to ho-hum breath.
 
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My eyes tell me the tx500 could have been it. But since the tx was a 4 stroke and would not have had the auto oiler that dad said he disabled for unknown reasons who knows. I've been searching to see if there is a way to check his registration records but I don't see anything online. Probably too old to be put online.
 
Are you sure it was that he didn't trust the "auto lube pump" or he didn't trust the new unleaded fuel? There were more than a few people that added Marvel Mystery oil, or outboard oil to their gas to "lubricate their valves" because they didn't trust the unleaded gas in their motors. As a matter of fact, I read some guys post on an RV forum, recently, that says he still does it on his old RV!
 
I can't think of any twin two stroke street bikes from the 70s with electric start.
 
Are you sure it was that he didn't trust the "auto lube pump" or he didn't trust the new unleaded fuel? There were more than a few people that added Marvel Mystery oil, or outboard oil to their gas to "lubricate their valves" because they didn't trust the unleaded gas in their motors. As a matter of fact, I read some guys post on an RV forum, recently, that says he still does it on his old RV!

I don't think it was marvel mystery oil due to him telling it needed 20:1 ratio and rattling off some massively quick math off the top of his head about some amount of gallons and fraction of gallons to ounces needed while pouring in the oil to the gas tank.

I remember a conversation about leaded vs unleaded gas

He also constantly ranted about Harley Davidson bikes being unreliable, I remember him stating that him and the club went for a ride, 2 members had brand new Harley Davidson bikes and at a fuelstop just after first service died. ( he also complained that he would stop for gas with them and by the time they were done kickstarting he needed more gas :)
 
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