OK Roger, here is exactly what to do:

Go to this Sears parts website:
http://www3.sears.com/
Enter in your number 315.34160 for your electric chainsaw in field number 2
entitled "Type in your model number. Click on "go". Then click on
"Continue" on the next screen which verifies that you are looking at the
right machine. On the next page click on the View Diagram radio button,
then continue, and another window opens with every part on your machine
shown with a part number in an exploded view. Now back on the original
window click on the View Part List radio button, then continue, and you see
the name for each one of those parts. Now just switch back and forth
between these two windows and you can identify every single part on your
electric chainsaw.

Easy as cake.
(I have been doing this recently as I have been fixing up our Kenmore
washer, dryer and fridge...)
Hope this helps,
Tomes

"Roger" wrote in message
...
I bought an old Sears 14" electric chainsaw model 315.34160 at a garage
sale and cannot locate and online source for an instruction manual for it.
I have used it several times after installing a new chain, and it cuts
great, but cannot figure what one of the controls is. There are three
knobs: One is a silver pushbutton that seems to manually pump oil onto the
chain. A knob just next to it has to be the filler cap for the bar oil, and
I have filled it. Right next to the filler cap is a black knob mounted on a
threaded machine screw, that just moves up and down when unscrewed/screwed.
What is that for? I was guessing it might set the rate of the oil flow
with each button push, but that was just a guess. Also, how often does one
need to manually push the button, in a typical cutting session? I pushed it
every couple of minutes, and it overoiled the chain, causing sprayback.
Also, any hitnts about where to find a manual would be welcome.