1 - filter
2 - spring
3 - tapered tip = top of the filter
3.4.3 Cleaning the suction filter
The condition of the filter at the end of the suction hose should be checked each
time the spray can is changed. To remove it, unscrew it from the suction hose and
rinse it in a solution of warm soapy water or spirit - depending on the spray
material used (see details in the previous section).
3.4.4 Cleaning after working with petroleum-based materials