40:1 (We just bought a used one and had to look this up on the Internet.) Also, haven't found a manual yet, but there's a listing on eBay Express for a complete parts breakdown, with some other good info. Try a search...
L. Palmer
September 2007
I can answer this question...
what is my oil mixture for McCulloch pro mac 610 chain saw?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix chainsaws.