The Electrotap
The Morini V-Twins have two fuel taps.
The main one located at the front left hand side of the tank
is electrically operated. No need to remember to turn the fuel
off when you stop the bike, it does it for you.
Your bike should make that reassuring 'Morini click' when you turn the ignition on. If you have ever wondered why, there's no need to pull your tap apart to find out, I've already done it for you.
1.Securing nut
2.Electric coil
3.Tube
4.Spring
5.Plunger
6.Rubber Diaphragm
7.Fuel tap body
8.Fibre sealing washer
9.Plastic gauze filter
10. Plastic tube
The Tube (3) is open at the tap body end and closed at the other
end. The plunger (5) fits inside the tube and the small spring
(4) pushes against the closed end of the tube and pushes the
plunger against the diaphragm (6) in the tap body. The tube,
spring and plunger assembly fit inside the coil (2), and the
tube is screwed into the tap body
When the ignition is turned on, the coil is energised and the
magnetic field created pulls the plunger away from the diaphragm,
allowing fuel to flow (the 'click' is caused by the plunger hitting
the closed end of the tube) .
With the ignition off, the spring pushes the plunger against
the diaphragm and stops the fuel flow.
The plastic tube (10) fits into the top of the tap body and is
positioned inside the fuel tank with the gauze filter (9) surrounding
it. The height of the plastic tube above the bottom of the tank
governs the amount of fuel left in reserve. When the fuel level
drops below the tube, the manual reserve tap should be turned
on.
The tap body with diaphragm removed.
Fuel flows in through the central hole and out through the two bottom holes. When the ignition is off,
the plunger pushes the rubber diaphragm against the central hole so sealing it.
The small diameter of the holes in the tap body can restrict fuel flow when the throttles are wide open
and the head of fuel above the tap is low. Opening the reserve tap is a cheap and
cheerful tuning tip for high speed running.