Husqvarna 254. When I was at GTG there was a 20" chain that package said was for a 254 at the "can you use it table". I snatched it up and it is time to get another chain. The chain was a PowerCare B78. What I am looking at is an Oregon H78. Pitch, drive, size and everything else looks the same. What does the B and H stand for?
I’m not certain either. I do believe that saw was running .325 .050 gauge. And a 20” bar would normally be 78DL.
From a couple sources I just looked at, H 78 appears to be Oregon BPX. Semi chisel cutter and I believe they have a small safety bumper. Very common chain