16" gas craftsman chainsaw needs tune up

Being a 2 stoke there isn't much to tune up. the MOST IMPORTANT THING TO REMEMBER IN A 2 STROKE IS GAS AND OIL MIXTURE,too much oil will foul plug no big deal. replace plug. too little oil in gas will wash the crome lining in the cylinder off and you won't have the compression need to burn the gas any more. once you get that straight crank the saw and run it wide open, it should be quick to react to the trigger, that is no stumbling until it finally turns up. if it don't have a small screw driver handy and turn down the screw for the run mixture until it runs as fast as it can. also let idle. it should run on idle as long as you don't turn switch off. if it loads up and quits turn in idle screw until it does idle right . that's about it. also always make sure chain on bar isn't sagging too much when not running. a loose chanin will cause uneven wear on bar and make a crooked cut.keep chain sharp. they dull quick.NEVER leave gas in tank for long periods of time. after each use drain tank and start until motor runs itself dry.