Operation /6 - Where do I begin? Fix it or yank it?

Thanks for all of the info. I really appreciate those part numbers too!

I'm going to replace the chain and the "top" sprocket this weekend. It is my understanding that the bottom sprocket requires a puller.

As far as the timing marks go, is there any way to explain to a "noob" on what I should be looking for (I.E; both marks should be at 6 o' clock)?

I am going to put the chain on, seal on the cover, and then crank her over without the radiator being in there (but just for a second). I'm trying to get a feel on whether the motor has any life left in it.

Thanks again or helping a newbie.