fuel tap

There was no flow at all through the fuel tap. It was easily removed although it does have a peculiar mounting nut. The screws onto the yank in an anticlockwise direction whilst the tap body screws into the other side in a clockwise direction.

There was no flow even after sonicating so I was forced to dismantle it... gripping it in a vice.

I coukd then use a pair of internal circlip pliers (90 deg) to locate in the slots and unscrew the face plate under the tap lever.

The faceplate lifted off revealing thesegmented washer that determines the tap lever position beneath. There was also the remnant of a red sealing ring but I couldn't tell what it was made of and it wasn't clear if it should go above or below the segmented washer.

These components lifted out

The washer was removed. The gasket plate visible beneath was also clogged and appeared damaged. This is a cork plate although most taps I've worked with are rubber. I'll try both to make a replacement.

Or possibly this off-the-shelf plate would do. I'll try it and let you know.

I found this diagram of a very similar tap as fitted to the Raleigh Wisp. I think this confirms that the plate was originally cork and that there is an additional sealing ring below the segmented washer. I cant tell if this is a rubber o ring or a fibre washer.

Suzuki fuel tap seal fitted very nicely... a little large around the outlets but should seal OK. The seal is probably a little thicker than the cork as I couldnt install a slip washer between the retaining g screw cap and the moving tap plate but I think it will work OK and if not I can cut a new plate out if the Viton sheet that has now arrived.