McCulloch SP80
E-bay purchase, didn't go too high. Advertised as an SP80, certainly the lable says SP80 and it does have a few details that lead me to believe it is/was an SP80 such as the style/design of the fuel cap, roller fairlead on the starter, the muffler is right, it has the spring on the boot rather than the ground wire on the front anti-vibe mount.
The clutch is a typical 10/600 Series two shoe affair and the regulation three shoe SP80 clutch does not fit the crankshaft. I don't know if that means this one has been rebuilt using other parts or if some SP80's came from the factory with the other crankshaft.
This one arrived with a broken rear handle (happened in shipping). I contacted the seller and we agreed to a small refund amount. I haven't seen the refund appear in my PayPal yet so we shall see...
I did not bother taking a bunch of photos during the process but it was pretty straight forward tearing it down, cleaning it up, and getting it back together. Just a few small items here and there were needed to make it quite servicable again.
I was pleased and surprised at the condition of the piston and cylinder. I measured the bore and the piston and they were in remarkably good condition. In fact, within my capability to measure, they were like new according the McCulloch piston/ring/cylinder list I have. Since I had a set of rings on hand I went ahead and put the new rings in. I used a brace (bottom/rear handle piece) from another project I have underway so now I will have to substitute the one Ron has so graciously offered on that saw.
Anti-vibe parts were in great condition, boot was very good, I did replace the impulse line and the metering diaphragm and gasket in the carburetor and the fuel line. Oh yeah, the coil was loose on the laminations. Looked like the retainer clip was broken allowing the coil to flow around and drag on flywheel. For this project I decided to use a coil I worked on a few week ago with Ray and Moody were here with a new spark plug wire attached. I had to adjust the length of the spark plug wire and repair the ground lead but in the end using the original points and condenser I had a nice hot spark. It came with a 20" McCulloch bar like you'd find on a 600 saw but I've never seen any bar as badly chipped as this one so I added a 24" sprocket nose (Echo) bar I had on hand. I think that one actually came out the the big box!
Got it all together in the afternoon and surprise, surprise, it starts, idles, accelerates, oils, even the stop swith works! All in all a very fun project. You will notice in the photos that the original black parts have been repainted rather sloppily with a grey that is reminescent of the PM4200/8200 color scheme. I will leave it as is for now but this one might just get a full restoration as some point in the future. Sure wish the crankshaft was original, I would like to have one SP80 with the three shoe clutch in it.
Mark