any electricians thin shafted flat slot screwdriver of 3" long or more - you can take the top cover off your saw and look at the carb, the adjustment screws and the rubber shrouding from cover to carb to give you an idea of what you need.
No magic tool - just a simple thin shafted screwdriver that fits in the adjustment holes freely.
Steve
March 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix chainsaws.