A 25:1 petrol to oil mix will suit things fine - use a quality semi synthetic two stroke oil such as Oregon. Its bright red colour makes it easy to see when its mixed in the can.
John
April 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix chainsaws.