most saws and equipment that I know of are either 50:1 or 32:1 mix ratios. I cant recall anything offhand that was 16:1, I would go with 32:1 as that and 50:1 are the most common. If you use to rich a mxture you risk gumming up the spark arrestor and if that happens the saw will not run properly. If you know your model number you may be able to locate an owners manual with this link http://www.poulan.com/customer_service/manuals_search.asp

or conatact Poulan:
Customer Service
Electrolux Home Products
1 Poulan Drive
Nashville, AR. 71852
(800) 554-6723

[This message has been edited by Hero of the Day (edited 03 June 2002).]