BCR Vacuum Fuel Tap for Aprilia Scarabeo 50-100, Malaguti Madison, MBK Skyliner, Yamaha Majesty 125-150

The BCR vacuum fuel tap is the replacement for the fuel tank of many Aprilia, Malaguti, MBK and Yamaha scooters from the late 1990s and 2000s. It works by vacuum: it opens when the engine draws and lets fuel flow to the carburettor. It has two side fittings for the hoses, an upper fitting and a mounting tab with a hole. The fittings are 7 mm.

Features

• Vacuum fuel tap, BCR brand
• 7 mm fittings, according to retailers
• Mounting tab with hole
• For Aprilia Scarabeo 50 and 100, Malaguti Madison 125 and 150, MBK Skyliner 125 and 150, Yamaha Majesty 125 and 150
• Original references quoted by retailers: 860176 (Scarabeo), 09305900 (Madison), 5DSF45000000 (Skyliner and Majesty)

Compatibility

For the models in the applications table. Catalogue applications vary by year and version and retailers do not quote the same list: check the model, year and original part number of your tap before ordering.

When to replace it

Replace the tap when it leaks, when it does not open and the engine stalls or runs unevenly for lack of fuel, or when the diaphragm no longer holds the vacuum and the carburettor floods.

Fitting and tips

Shut off the flow, disconnect the hoses and note the position of each fitting before removing. Use hoses in good condition and new clamps, check for leaks with a full tank and make sure nothing drips before riding off. Petrol is flammable: work on a cold engine in a ventilated place.

Frequently asked questions

Which scooters is the 407050395 tap for?

Aprilia Scarabeo 50 and 100, Malaguti Madison 125 and 150, MBK YP Skyliner 125 and 150 and Yamaha YP Majesty 125 and 150, as per the applications table.

What fittings does it have?

The hose fittings are 7 mm, according to retailers.

What does vacuum-operated mean?

That the tap opens thanks to the vacuum created by the engine and lets fuel through only while the engine is running.

How do I check it is the right one?

Compare your tap with the photo and check the original part number, if readable.