Chainsaw Repair

The local saw shop has a frontier a pioneer a skil  and a husqvarna same body with the one piece handle tank cover all of the part numbers are 507 which is pioneer they are a odd little saw Tom

That's a Frontier/Quadra/EMAB built saw.  Sold under the Skil, Husqvarna, and many other brand names.  There were many variants of them.  Some with AV.  Some with manual oilers.  Some with a weird ventilated clutch cover/exhaust duct setup (with a 'fan' setup on the clutch like what you'd see on a flywheel).  I don't like any of them.  Have had about 10 pass through my shop and have not kept any of 'em.  Gimme a Poulan Micro series saw over them any day of the week (and twice on Sunday)...

There has been a commercially available R/C version of the little Quadra engine available since about 1980 or so.  That was one of the first OPE based large scale engines on the market.  As the large scale market has grown, the list of gas engine mfgs has grown with it.  OPE based and purpose built large scale and giant scale engines abound.  There's also many folks out there (and here on this board) that covert various OPE engines for RC use.

Fixed the minor issue by changing four letters.