Just picked up a 2003 Ferris 32" hydrocut off craigslist. Low hours, residential use only, looks new, completely serviced for the season and great price to boot. This is my first experience with a "baby big boy mower"! The manual doesn't address a service schedule for the hydro drive. Anyone out there have experience in this area or have any tips for how to continue the TLC for this beauty? Thanks in advance for suggestions!