It Runs!
I had a bit of spare time today, so I had a bit of a play with my new toy.
I lifter the cylinder and found that the rings were gummed up, but they free up easily, and the crank looked ok, so I squirted some oil into the main bearing oil holes, and onto the big end and put the engine back together. I gave it a kick and compression felt good, well for a 100cc 2 stoke, it definitely is easier to kick than my normal 500 Yamaha single. Alas there was no spark. I ended up having to drop the engine out of the frame to clean out the mouse nest from inside the frame and pull out the chewed up remains of the wiring loom. A quick bit of wiring and I had spark. With a bit 0f 50:1 mix in the tank, courtesy of my brush cutter, it was making all the right noises and trying to start, but wouldn't quite catch. Then I noticed that there was no signs of anything coming out of the muffler. A quick check revealed that the baffle was totally clogged, surprising in itself that a 40 year old 2 stroke still had it baffle fitted. Anyway with the baffle out is started after a few kicks and promptly filled my shed with blue smoke haze. Ah, the joys of 2 strokes.
I have a sneaky suspicion, that this little Yamaha is going to jump the restoration cue and become the next project on to the bench, well truth be know, it is already on the bench, but I need to finish the SL125 Honda first. So once the little Honda is done, this will be back onto the bench for a good clean and fettle.
I don't intend doing a full on restoration, just throw in a new wiring loom and piston /and rings, replace the seat and polish it as best as I can.
CJ