For Hsb Models Made Before 2013, Use The Generac 5665 Air Cooled, 999Cc Kit.

Scheduled maintenance is a necessity for all standby generators. The Air-Cooled Scheduled Maintenance Kits offer all the components necessary to perform a complete maintenance on Generac air-cooled generators. Maintenance is recommended at every 200 hours or 2 years. If running in a dusty environment, more frequent maintenance may be required.