inheriting a McColloch Pro Mac 10-10 Automatic -- doesnt run, but good compression

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strad

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It's a saw that's been in our family since we lived in Boring, Oregon 30+ years ago. I've used it some -- brought it back to life about 15 years ago and used it quite a bit, then moved away from home and since then it's decided not to run. I'm inheriting it and I've got some ideas to fix the non-running issue (new fuel, new spark plug, check spark, clean filters, etc). To my memory, it did have an bar oil leak -- manual oiling worked, but not sure if automatic oiling did. Actually I did not know it had automatic oiling until a few hours ago lol.

Question is, how much trouble could I be in with the oil leak? To my memory the oil leak was from somewhere near the outlet (where it oils the chain) but I'm not sure and I don't have the saw in front of me. What is a common cause of that? This is a saw that's seen light occasional use over its lifetime -- not one that's been bashed around or run into the ground, so I'd like to resurrect it once again! I expect that it will see light occasional use again, provided I can get it running lol. I've worked quite a bit on my BMWs but small two-cycle engines are new to me. Help is appreciated!
 
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I would first clean the saw up good and try to pinpoint the oil leak. A lot of the 10 series saws leak oil from the front oil tank cover. I always make a new gasket from cork material which seals the tank better. Here is a pic of one of the gaskets I made recently.

IMG_20110616_164220.jpg
 
Nice! Keep that piece of family history going. The oil leak could just be crap between the drivecase, bar, bar plates, clutch cover, etc. Take the clutch cover off and clean off all the mating surfaces. Otherwise, I'd say it's the oil tank front cover gasket as already mentioned. Put a carb kit in that saw. Should be a Walbro SDC, and would take a K10-SDC kit. They're available everywhere....
 
Thanks for the info guys. I pick the saw up next week. When I say "inheriting" perhaps I should have said "being given." My parents now have some sort of an electric chain saw which is a whole lot lighter and quieter and suits their needs better. So I talked them out of the McCulloch -- yay.
 
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Strad -
Welcome to AS! In keeping with the spirit of the forum, what will your NEXT saw be? That Yellow Fever is contagious! :hmm3grin2orange:
 
Well, I have a dirty habit of collecting things lol. Make some suggestions!
 
Seeing that you're in Vegas, I can't immagine your local CL will be full of old chainsaws (not that much timber there). You never know though. Keep an eye out for the all metal McCulloch, Homelite, and Poulan saws. Better start making shelf space now, as you're a willing victom for the Yellow Fever!:laugh:
 

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