Home Use McCulloch

[gmax]

My 2-10 has a Walbro carb, which is good if ever I need a kit for it.

 

[Tzed250]

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This is what a Pro Mac 700 sounds like...


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I like old McCullochs...


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[Chainsaws928]

I have a few right hand starts 10-10, 4-10 ,2-10. I just learned through trial and error that the flywheel on a 2-10 will work on a 4-10 they are 4.2" diameter. left hand start have 4.4" diameter. but the timing is factory advanced by approximately 3 degrees on the 2-10 which makes sense because the 4-10 is difficult to start, so they retarded the timing.. i did this swap because the 4-10 (70CC) had broken fins on the flywheel. I inadvertently created a powerful 4-10 similar to my pro mac 700 by accident. I put a truing steel through the key ways to prove to myself this is correct. My point is if one wants to advance the timing on a vintage 70cc Mac, just buy a flywheel from a 1-10 or 2-10. hope this helps in the timing discussion.