Chainsaw Repair

I have the fs38  It's a pita to start and once started needs the choke on a small amount to keep running this thing has less than 25 hours run time today couldn't start it at all, I have a powerhead from an older 38 think I will switch out the carbs I was given the powerhead when the old fellow that owned it couldnt reassemble the pull start and it was cheaper to buy a new one than pay for the dealer to fix it.