I've got a John Deere z810A with a Kawasaki FH661V-BS06-R motor with less than 600 hours. Mower is in very good shape.
It started running rough and took it to a local shop. Was initially told it was an electrical issue, now they are saying that the motor is shot. Said the compression test and...
Bought mower used. After about 45 minutes, hydro oil starts coming out of hydro reservoir filler cap. Within about 5 minutes, I'll lose right side hydraulics. After it sits and cools it's ok for a little while.
Hydro oil DOES look milky and starts coming out after running about 30-45 minutes...