Chainsaw Repair

Besides the oiler hole locations (which I could drill on the D276) and 8.2mm v/s 8mm slot. Any other differences in these bars? Tail mounts basically the same?

The slots on both the D176 and D276 are both actually around 5/16".  Studs on saws intended for both saws are 5/16".

Biggest differences are the oiler holes and the tail width.  Tail width may or may not always be an issue.  Depends on the individual bar.  I have some D276 mount bars with very narrow tails.  They're like a K095 or K041 in width.  MUCH narrower than a D176.  That could cause the chain to be pinched between the bar plates and/or chain damage to the clutch cover and drivecase.   Could also leave the oil channel on the bar pad partially uncovered (which would let oil just ooze over the chain rather than pump into the groove where it's needed).  Same thing happens when running a D096/D196 on a F014 mount large Homelite mount saw (such as a C-5).  That's another topic though...

The D276 is like an A041/K041 in that it oils through the adjuster holes.  You'd have to drill oiler holes for use on a D176 mount saw.

Thanks for info Aaron

D176

Just seen a D276 skinny like you said.  Least I know to watch for that now too. Thanks.

116DL is listed for that bar on Echo's site.  Your bar is an Echo branded/stamped Oregon.