New to me it runs but needs help. Smokes at low idle clears wide open I have read old posts (what I could find ) I need to look for check valve in one of the elbows ?
Duck bill ? Witch elbow ?I found Lombard with AV only one pic on google.
Going to run Vac/Pressure this week P/C look good 2 big rings .
Smoke is from bar oil being sucked in crank ?
I don't know that model specifically. Remington used a similar setup, whereby through a 90 elbow fitted on the tank , it was pressurized through a duckbill receiving a pulse from the bottom of the cylinder. Flywheel and ignition had to come off though to access the fitting. The likely fix is a Poulan duckbill in that fitting with bill facing toward the oil tank. You may need to manufacture something to hold the bill?
http://www.arboristsite.com/community/threads/lombard-chainsaws.232298/#post-4231750
Good repair video giving a general idea of how these setups work.
Good luck. That is a sweet looking machine.