How do I get to the oil pump?

i find that the pump cover screw vibrate loose behind the clutch

try and run it with the muffler off the build up with carbon and restricted the exhaust flow as for the oil leak mine the screws became loose behind the clutch for the oil pump

The oil pump has a worm gear that strips easily if the oil line clogs. You will likely need to replace it.

If the ports where the oil comes out aren't clogged, you will have to order a oil pump and then take apart the saw from right underneath the bar. The oil pump is run by a worm gear that strips easily.

Go to this LINK and find the part/diagram that can help you.

Please thumbs or post back,thanks

Remove the clutch (left hand thread) and sprocket, undoe the screws for the pump and you will prob find the plastic pump gear stripped due to lack of cleaning and greasing...cost about $110 AU$

Hello JK; I am hesitant to answer this, these are all Poulan electric chainsaws that appear when the parts source is searched for Poulan Electric Chain Saws:
400E Poulan Pro Electric Saw
http://www.ordertree.com/modelinfo/PWE/400E-Poulan-Pro-Electric-Saw/75.400E-Poulan-Pro-Electric-Saw.1.59.1.html
400EX Poulan Pro Electric Saw
http://www.ordertree.com/modelinfo/PWE/400EX-Poulan-Pro-Electric-Saw/75.400EX-Poulan-Pro-Electric-Saw.1.59.1.html
ES400 Electric Saw
http://www.ordertree.com/modelinfo/PWE/ES400-Electric-Saw/75.ES400-Electric-Saw.1.59.1.html
PP250E Electric Saw
http://www.ordertree.com/modelinfo/PWE/PP250E-Electric-Saw/75.PP250E-Electric-Saw.1.59.1.html
PP300E Electric Saw
http://www.ordertree.com/modelinfo/PWE/PP300E-Electric-Saw/75.PP300E-Electric-Saw.1.59.1.html

All are plumbed the same to my eye. I assume you cleaned and tested the oil pick-up within the tank. If everything you say is true if the pump is driven it should oil.
1. What causes the pump to pump? I cannot tell from the IPLs. If gas and not gear driven, an impulse line (pressure/vacuum) from the crankcase drives it. There can be no impulse line on an electric and I see no gear. Does it rotate to pump oil? What imparts the rotation?
2. What purpose does item 27 (pinion) serve? Is it supposed to drive the pump? Is it missing teeth?
3. What is the purpose of item 44 (check valve). If it is an oil tank vent, and not opening, you are creating a vacuum in the tank if the pump is operating. Loosen the oil cap and see if it oils. If yes replace the check valve.

I think Joe Schmoe is saying Poulan redesigned the oil system to eliminate all the hose couplings. It makes sense, one hose from oil pickup (filter on hose end in tank) to bar is much less likely to leak, also no restrictions for any particles in the hose to form a clot on. I see nothing on my research to support Poulan doing that. There are a couple of new models that I cannot find an IPL for so it is possible. I have headache JK. If this does not solve it is not because I did not give it my all. Please post back (below) with success or failure. If successful what was the cause. TIA

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

oil pump itself is probabley clogged or u.s youdoit

Common problem with Poulan and Craftsman gas saws. Take off the chain and chain guide and clean out all the saw dust etc. Start saw without chain and look for port where there are signs of oil. If port is clear of sawdust, then it is likely the pump which is located behind the chain break assembly. you can get the diagram on Poulan website and the replacement pump will cost about $15 - $20 to replace yours.

We can see no more detail than can you.
This is a collection of chainsaw enthusiasts that may provide a better answer. Be prepared for a little grief because you a Poulan.
ArboristSite.com Chainsaw thread
http://www.arboristsite.com/forumdisplay.php?f=9
GL
Lou