So i was asked several weeks ago if not longer if id be willing to work on a sp81 chainsaw. Of course i said yes. I was asked by a pal from new zealand for a gentleman who lives in new york state. The saw was shipped to my house from iowa. It arrived as most do a very dirty saw. But it was complete. I got the chance to start on it and took it apart. There was a large score on the piston i could see so the engine was torn down. Turned out it was just the piston. Shweeeew. So the cylinder is in good shape. Very lucky there. So i gathered a list of parts and called the ol mac guy bob j. He sent me a new piston for the B cylinder(lucky there too). A new bottom brace cause this one was missing a lot of it, new seals, exhaust gasket, and a couple other little things. Waiting on parts, its time to clean this mess up. Likely took 1/2 pound of oily sawdust out of it and gave it a good scrubbing. Every ounce of it!! Cleaned and waiting parts. It had a spur sprocket on it, cant have that. So a new old rim drum i had went on it. Got a few new allen screws for the engine block, a few other fasteners from my hoard and waited......fast forward to a week ago and the parts showed up. I was excited for this cause it was in really good shape. I had to work all week but was off friday. I got home thursday evening and got started. Took my time but 2.5 hrs later i had a complete engine sitting on the bench. Including flywheel and points, av mounts, and rear shroud. Carb boot as well. The next morning (friday) i got busy again. My goal was a running saw by lunch. My goal was met. After a few more hours i had a complete, clean, sp81 to look at and put fuel in. The owner sent me a nos sdc37 carb for it. Original was the 51a(fixed jet). They are good but the 37 is a snappy carb. Outside i go to add fuel. Put in some 32:1 fuel....no leaks!! Great so lets set it on the ground and see how we did i thought. 8 pulls later its running!!!!! And idling on its own but wont rev up??? Someone forgot t attach the linkage to the trigger!! Guilty. After a short fix i tried it again and boy oh boy we have a runner!!!! I mean a good runner. I was happy with that. Fast forward the owner says to try it out....but its soooo clean. So today i try it out. What a great runner and with a 20" bar a very strong cutter. So now a guy whos been wanting one for awhile im told now has a great classic strong running mcculloch muscle saw. I was very glad to be asked and trusted. Ive yet to even speak to the owner. Just emails and texting. So, Edju1958....thankyou for the opportunity. And mr. Boorer of course. Heres some pictures. I hope you enjoy your new saw!!!
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