Here in Japan, it's simply called the UR50. The different names in different countries made it really hard to track down a parts list.

 

Wow...I never noticed the exhaust in the parts list...it's so different than the one this has. I see your point with thinking it's aftermarket. I just never imagined an aftermarket exhaust getting to this point (rust/decay).

 

just showing you where my engine ID is. and by the way these look exactly like the yamaha raptor which it very well could've been reverse engineered from

 

Just wanted to give an update. I found a local shop that sells a myriad of parts for bikes and scooters. Was able to get a #100 and #105 main jet and a #45 pilot jet, so those are ready to go.

Last week I tore the buggy down. I spent last weekend making a sandblasting cabinet in my open basement and everyday except for one this week sandblasting the frame, upper/lower arms, almost every metal part that could be removed from the frame and the clutch/variator housing.

This is it, in bits and pieces:



As you can see, the frame was in nasty condition:





Clutch/variator housing prior to blasting:



This is what it looks like, now...ready for reassembly:



And the housing:



Clutch and variator installed:



It's not perfect, but I'm satisfied. Again, considering I started with this:



I'll start putting the whole thing back together tomorrow if it's not raining.

 

Nice work man. Showing a lot of love for this little quad. I too am surprised that motor didn't just blow up without oil in the gas. I've heard lot's of horror stories of this happening. I too disabled the oil injection and now use pre-mix in my sons quad. Except I put a sticker right by the gas cap to put only pre-mix in. Keep up the good work.

 

Thanks. I just woke up...my son and I are about to go outside and start putting it together. You brought up one of my next questions...pre-mix. I've been seeing a lot of 32:1. What would you recommend?

 

32:1 is a good mixture. Plenty of oil. That's what I use on all my quads. My son and I have KTM Dirtbikes and they run lean at 40:1