John Deere 997 ztrak oil leak

[Fastrac]

I have a oil leak on the shaft that comes out the gearbox to drive the cutting deck !
Does anyone know if this a easy seal replacement or a John Deere main dealer
Any advice you have would be great
Many thanks

 

[mechanic mark]

http://manuals.deere.com/cceomview/OMDMU21029_I5/Output/Index.html?tM= this is all I could find, removal of deck is opposite of installation. Scroll down left side of page to installing deck.