I have seen factory saws with 8mm to 9mm spacers and I have also seen those thin spacers smashed and busted up from normal use. Partner P100's for one used them.
If this is for your Poulan, I would suggest your spacers be for 5/16 to 3/8 and then file the bar slot out to fit. Something no one else mentions is that by putting a D009 bar on your Poulan you more then likely will end up with a odd drive link chain as the D009 bars seem to like 1 less drive link when put on other saws like a Poulan.
If this is for your Poulan, I would suggest your spacers be for 5/16 to 3/8 and then file the bar slot out to fit. Something no one else mentions is that by putting a D009 bar on your Poulan you more then likely will end up with a odd drive link chain as the D009 bars seem to like 1 less drive link when put on other saws like a Poulan.