Chainsaw Repair

Jon is the slot in the black bar 3/8" or 5/16"?  If it's 3/8", then that's one of those 'slim line' bars that Mac sold for both the 10-series (when used with a stud spacer) and the large frame Macs (with no spacer, but with those special bar plates).

Aaron,

They are both 5/16(8.2mm). Both type of bars are 404 063, though I have changed out a couple of the 28" to 3/8 pitch tips.

Interesting.  I'm surprised they made the D276 bars with tails that wide........although it would more closely match the diameter of the .404-7 rim.  I've seen some long (36"-ish) D276 bars with wide profiles like that.  Fraser has 'em.  Logging veterans.  A fellow could open up those slots to 3/8" and run them on large frame Macs (with the 'slimline' bar plates we've talked about before).

LMK if you need any more 3/8" Windsor 3-rivet tips for those bars.  I still have a bunch, and would gladly trade them for the .404 tips.