I'm not sure where you landed on this topic, but I purchased the same machine, or close (I have the 211U566), and I've been reading through the manual and it does have a pump - however, I believe it's just for the hook lubrication. Did you ever find the oil fill hole? I think it's the same hole that the oil gauge goes in. All the other oil holes lead to some kind of wick that lubricates a bearing or something like that.
Have you ever looked into touchup paint or Decals for this machine? Yours looks like it's in great shape - whereas mine could use a little more work.