cleaning out the garage today and came across my husky trimmer (22l)? the head broke last fall , the specs on the cover say 22.5cc , will this make a good conversion? ryobi/poulon/homelite/echo have an abundance of info , the huskys have very little , i will appreciate any and all info , I have already stripped it down and shaved some weight off , its much smaller and lighter than my ryobi 31cc , I have a few questions mostly about the carb (walbro) return spring removal? no adjustments other than idle screw? only has a feed line , the stock tank is vented , here are a few pics

Lawndarts, the engine would make a nice conversion. Put EI on it and save the weight of the flywheel and mag. You want to leave the spring on the shaft but disconnect the hook and clip it off. Your servo will hold the throttle position. The spring acts kind of like a spacer so you want to have it there for that only. Are you saying there is only one needle? You want a 9mm carb or so on it with a high and low needle. One line is fine. You will vent the tank anyway.

Tim