Craftsman chainsaw runs wide open all the time

remove the plug, hold the throttle wide open and pull about 10 times
replace the plug and hold the throttle wide open, pull to start
the stihl floods very easy and will not start until the excess in the crankcase is removed

allways use full throttel when you insert the chainsaw

if your saying your saw runs full speed as soon as it starts , one of two things is happening :
(1) your low speed carb jet is too far open
(2) your throttle trigger has disconnected or become stuck from your carburetor and now the throttle blade inside carb is full open

takr the muffler off and try it if ok open the muffler and clean the screen inside

Clean the air filter and the spark arrestor and muffler; if the saw cannot exhale it cannot inhale. If no better post back below. Please include the model number.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Here is a suggestion to your idle problem on your poulan chain saw,turn the saw on its side so the carb adjustments faces you, you will notice two fuel adjustment needles, one with an h beside it an another with an l beside it, the i is the idle circut, the h is the high speed circut,turn both needles clockwise to the right until they bottom out,turn both needles out 1 turn each,start the saw, run it until it warms up,turn your curb idle screw to the right, until the saw will idle on its own,this screw is the big screw above the two main high& low jets,go to your low speed screw the one with the i beside it, turn the screw out until the saw starts to stall,then turn the screw in until the idle picks up& until the saw starts to stumble mid way between these two points is the correct idle with the saw idiling on its own,once you get this problem solved, your saw may be idiling to fast in this case just turn your curb idle screw back until the chain just starts to rotate around the bar.The procedure is the same for your high speed circut,open the throttle wide open turn the high speed needle counterclockwise until the saw starts to lug,then clock wise until the engine picks up, you should get a booging sound or two strokin sound, this is a sign of ample fuel delivery, anything less can lock up your saw, due to a lien fuel mixture,remember your running a two stroke mix of gas& oil you have to have the proper lubrication, i hope you can make heads or tails of this, hopes this helps your problem.p.s.when you perform this proceedure, there may be idle limiter caps over your adjustments,just take a pair of pliers & pull off these plastic caps,, you can reinstall these caps or leave them off the choice is yours

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.

You don't want to tighten them down just turn them in until the are just snug and then turn them out.
Start with the low at 2 full turns out and the high at about 1 full turn out. Start the saw and let it idle adjust the low idle to where it runs smooth. Adjust the high until the saw runs as much rpm as you can get at w.o.t. (Wide Open Throttle).