Remington SL9

[Timing pulleyguy]

I recently purchased a used SL9 in excellent condition....except for the auto bar oiler....it is pulling bar oil in to the cylinder & smoking badly...I cleaned all the lines...ranit without bar oil and does not smoke...I read in your files about these "duck bill" valves....how do I fix it...? I don't see how to get to the fitting in the tank? Do you have to crack the case?

This is a real classic saw and would like to restore it to fully operational...thanks for any expertise on this issue from you experienced arborists..