where and what oil?

[jdtm]

I have just gone through and installed a pro action skid and new track new chain in the chain case and gears on my 94. I filled the chain case to the overflow bolt in the cover with 80w90 gear oil, what else needs oil changed and what oil? Pics would be nice I understand that the pto uses 10-15w40 but where is the drain plug and fill plug wish I had a manual any other oil need changing?

 

[Ted]

Drain and fill plugs are in the center of engine between the exhaust. I use synthetic gear oil. 80w