How do I clean the filters and how often should I do it?

The interval depends on factors like herbicide used and water properties like hardness etc. Wear protective equipment. For cleaning the main filter, unscrew the filter lid and open, remove the filter and rinse with running water. there is a magnet inside to capture metallic particles, it can be wiped of. For cleaning of the filters in the spray modules, dissconnect both hoses of the spray module, then open the filter housing, and wash with running water. The filters can also be cleaned with soap or fat removing chemicals like ammonia solution if needed. Usually the machine sends a notification that the system pressure or pump power is outside specified range if the filters are clogged during spraying.