two hole in gas tank. one for carborator fuel line. don't know what the other hole is for. gas licks out of this hole.

Chuck, February 2012

If there is a primer bulb on the saw, which I suspect is the case, this other hole is for the return from the primer bulb. Need to put a hose on the primer bulb or on the return from the carburetor to the tank.
If there is no primer bulb then this is a vent hole that has lost its vent tube.

Luggnutt, February 2012