Have just nursed the old stihl fs120 through the last 12 months, replaced piston /coil/ carby/and other bits and pieces.
Recently it has started playing up again by not reving up after start up I have spent a few hours fiddling with it but no matter how much I adjust the carby no joy .
I have removed the muffler and hey presto the motor revs just fine . before I go and buy a new muffler my question is, do you think that the problem is the muffler or perhaps something else and by removing the muffler it eases pressure off some other faulty part and allows the motor to run just fine? Any advise would be appreciated.
cheers Bill
