Lotus Elise S1 Service Notes page 353

I Lotus Service Notes
Section JH
engine, from which it returns to the inlet connection on the top plate and spills into the canister to supplement
the primary pump output and keep the canister fully filled. An umbrella valve in the bottom of the canister
allows fuel to flow into the canister whenever the tank level is higher than the canister level. This feature also
permits a continued fuel supply to the secondary pump stage in the event of a blocked primary stainer.
A removeable panel in the chassis behind the LH seat provides access to the fuel pipe connections, and
harness connector, but if the fuel pump or gauge sender unit require attention, it is necessary to remove the
fuel tank from the chassis.
Electrical socket
Outlet to fuel filter
Return from regulator valve
Telescopic legs
Canister overflow
Reservoir canister
3rd stage turbine
Fuel level float
Fuel tank
Fuel return
Pump motor
2nd stage impellor
1st stage impellor
2nd stage
strainer
Umbrella valves
To Remove Pump/Sender Assembly
1. Remove the fuel tank (see sub-section LH.5).
2. Release the 8 x M5 fixing nuts, noting that the unit is lightly spring loaded, and remove the clamp ring
retaining the pump assembly to the tank. Withdraw the pump/sender unit and sealing 'O' ring. Cap the
tank aperture to prevent dirt ingress and to reduce the fume hazard.
3. To release the fuel gauge sender unit, unclip the black foot from the base of the canister, and disengage
the sender mounting bracket from the canister. Disconnect the electrical cables from the unit and with-
draw. Take care not to damage the float arm.
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