Generac 6485 Scheduled Maintenance Kit for 20kW and 22kW Standby Generators with 999cc Engine Scheduled maintenance kit is for standby home generators For use with the 20kW and 22kW air cooled standby generators from 2013 or later (999cc engine) Maintenance is recommended every 200-hours or 2-years Includes a pre-cleaner, air filter, oil filter, oil funnel, (2) spark plugs, blue cloth, instruction manual and maintenance sticker Oil must be purchased separately