Not sure of model etc, as only info is on air intake cover--- FR44" , Factory Reconditioned, Direct Drive, McCulloch. Resembles picture of the models shown above. I have cleaned carb, gas tank etc, checked spark and gas cap has 40:1 mixture on it.Can you advise as to the settings for the high and low speed needles(starting from the full seat shut off position.) It will run but dies out and I would like to have base settings to fine tune from. Thanks for any suggestions.