Reply To: Neptune 500 Mighty Mite carb

[Dave Morrison]

Final Update

The large screen in the carb kit is not for this application ( even though it’s a perfect fit). Beneath the diaphragm on the fuel pump side there is a tiny mesh filter screen at the opening of the passage that delivers the fuel to the intake side. There is actually one of these tiny filter discs included in the kit.
This is not too practical an idea since to clean it requires removal of the diaphragm.
Better idea : After redoing the carb just use an in-line fuel filter, since these models have rubber gas lines anyway