This bike originated in Canada. I purchased it in 2012. It was not running 100%.

Winter 2021  I removed the engine and rebuilt it

Ken O'Connor racing performed the following:

Rebuilt crank: new rod, crank pin, washers, big end bearing, and top end bearing

Bored stock cylinder to fit 67.5mm new Wossner piston

Massaged the area around the power valve (this is from memory I can't remember exactly what they did)

The following is work I performed 

All nos yamaha parts except the carb,  piston and rings

Light smoothing of transfer ports

Decked the head and cylinder very light work needed

New cylinder studs and hardware (from memory)

Installed new crank bearings 

Installed a few new transmission bearings

Installed new crank seals

All new gaskets

Installed new OKO carburetor 

Installed new Reed valves 

Adapted a wr200 fmf fatty chamber to fit 

Removed oil pump to run on premix (pump is included with sale)

New battery

The engine was heat cycled and then ridden on the street for about 100 miles.  it's had a strict diet of pre-mixed 91 octane non ethanol fuel and Motul 710 at 32:1.  This is a counter-balanced power valve motor so it really is smooth, has a nice low end and a decent pull up top. Engine revs clean and snappy but  check jetting for your elevation. The clutch and trans work great. Everything works.

I have a clean clear Wisconsin street title that lists the bike as road/trail. I believe this bike could be road legal in all states. You would have to check for yourself but Wisconsin is a very tough state to get a street title and it's legal here. Bike is all original except the fmf and the turbinecore silencer. I have the stock chamber. I did have to get creative to adapt the chamber to the silencer. see video.

See pics for details:

 plastics on left side cracked, a few dents and scratches

I touched up the frame with rustoleum years ago

Fork seals are leaking

Front brake works but will need a rebuild

Rear turn signal stalk cracked

There is no sidestand safety switch. 

Front brake lever is bent

light surface rust in the tank. 

Not a defect but it's on premix so the oil light is lit on the dash

I will work with a buyer to get it shipped. I have a van so I can get it to the shipper of your choice in Madison Wisconsin

Pick it up from my house if you would like. Contact me if you would like to talk via phone.

A few videos 

Youtube.com/watch?v=HYT4ytr-pWA

Youtube.com/watch?v=rYdXQ9P4PzU