My son found an old Stihl SH85 hand held blower/vacuum at the curb in his neighborhood a couple days ago and gave it to me. It started good but wouldn’t take gas it just bogged down when applying even slight throttle. I’m thinking new carb at first but then thought the spark arrestor might be gummed up so I pulled the spark arrestor and sure enough, it was caked with old unburnt oil. Used my torch to burn the gunk off and it starts, idles and runs at WOT like new. It doesn’t have the bag or the vac connector attachment and tube so I’ll just use it as a back up to blow the sidewalks and driveway. I might suggest he stop at the house where he picked it up and ask if they might have the vacuum attachments…….