Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Hi
Craftsman  536.886440
I have this as my backup blower. Well I bought an Ariens since this thing performed so poorly.
I had it tuned up to the tune of $150 or so in 3/ 07 and it didnt work well with the last storm of the year then (4" of  slush). SO I got the Ariens then.
I would like to sell it but its not  performing right....Starts and idles well, drives good. Today a buyer tried to throw snow (12-15")  off the edge of the driveway and it
threw about 5 feet but it seemed to just bog down and stumble on its own feet, for lack of a better description.
It seems at first like it's going to be fine, but as soon as it advances a couple feet it just dies.
Could the engine be worn out? Could it be a simple adjustment?
The buyer felt like it didnt slip or anything, the motor just  gave up.
Any ideas to tinker with?
Thanks so much.
Tony