Mac 335 McCulloch Chainsaw Oil Pump Servicing.

My trusty Mac 335 chainsaw that I purchased second-hand on eBay for $100 stopped sending oil to the chain. Rather than abandon her, I decided to fix the fault.
I understand the same pump system is used in the Mac 338, 435, 436, 438, 440 and 442 chainsaws.
Here is how to get the pump and download the Parts List and Assembly diagrams in PDF format:
crazytom.com/a/...