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Tool Talk Discussion Forum

Old McColloch Mac250 chainsaw engine

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John Bowhan

05-14-2004 20:33:18




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I have the engine out of an old McColloch "Mac250" chainsaw and I can't find anyone who has specifications for that saw. I build Giant scale remotely controlled aircraft that are powered by small two stroke cycle gasoline engines (they are considered very large in this hobby!) and I need to find out how many cubic centimeters (CC's) this engine is so that I can fit the right size propellor to it and how large of a model airplane it will fly. If anyone out there knows of someone that still has an owners manual or a shop that kept their books or microfiche on the older McColloch chainsaw's I would appreciate it tremendously if they could E-mail me with this information.

Thank you.

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Gene Davis (Ga.)

05-16-2004 20:34:53




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 Re: Old McColloch Mac250 chainsaw engine in reply to John Bowhan, 05-14-2004 20:33:18  
TheMcCulloch 250 chain saw engine is a 4.9 cubic inch displacement engine.



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jeff

05-15-2004 06:36:51




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 Re: Old McColloch Mac250 chainsaw engine in reply to John Bowhan, 05-14-2004 20:33:18  
What do you want to know? I have the parts books and shop books for most of these saws. Under stand that the 250 is a heavy engine and only runs at 8000 rpm with a little over 4hp. A much better choice would be a latter 610 saw. You get a GOOOD strong 4 hp with less weight and they run at about 11,000 rpm. Let me know Jeff



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Greg C.

05-14-2004 21:48:04




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 Re: Old McColloch Mac250 chainsaw engine in reply to John Bowhan, 05-14-2004 20:33:18  
Here should be all the info you need, good luck!

http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/62d31fcbe77bee1b88256b610015c209?OpenDocument



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