The fuel system circuit consists of:
The plastic mounting shown in the figure and mounted in the tank contains the electric fuel pump (centre), the fuel filter (2) and the pressure regulator (3).
The image shows the housing at the bottom of the fuel tank in which the plastic mounting containing the electric pump, fuel filter and pressure regulator is installed.
The two pipes of the fuel circuit are connected to the bottom of the tank with quick connectors. The connector (1) on the right is for the fuel delivery line (out), the connector (2) on the left is for the fuel return line (in). Always check carefully that the connectors are fitted correctly and that there are no leaks.
The electric connection for the fuel pump is located under the housing for the plastic mounting for the fuel pump, fuel filter and pressure regulator.
Each cylinder is fed by a single injector with a 12-hole atomiser nozzle. These injectors are installed downstream of the throttle valve.
The drawing shows the layout for the fuel system circuit. The pipes (4) with grey arrows are the delivery lines of the electric pump, which carry fuel to the injectors. The pipe (3) with black arrows is the fuel return line. The fuel return line is connected to the pressure regulator, which is submerged in the tank with the pump and the filter. As a result, the pressure in the fuel delivery and return lines is the same.
The image shows the pipes in the fuel supply circuit.
Checking regulated fuel pressure and fuel flow rate
The pressure regulator, submerged in the fuel tank together with the pump and the filter, maintains the same pressure of 3 bar in both the delivery and the return lines. This pressure may be checked by connecting a pressure gauge to a t union connected to one of the two connectors on the tank. To measure this value, the engine must be running or the pump activated from the dds. The t union means that the both injectors and the fuel gauge receive fuel pressure simultaneously. The regulated fuel pressure is 3 bar.
To measure the fuel flow rate, disconnect the return line from the tank, place the free end of the line in a graduated container and start the engine or activate the electric pump from the dds.
Warning
When checking fuel pressure and flow rate by activating the pump from the dds, check that the battery is fully charged to ensure correct operation of the pump itself.
An incorrect fuel flow rate and/or pressure may cause engine malfunction, resulting in variation in the self-adaptive parameters defined by the engine control unit. Fuel flow rate and/or pressure values deviating substantially from the rated values will result in an incorrectly generated fuel-air mixture that is too rich or too lean and, as a result, compromise the measurements made by the oxygen sensors. After changing the fuel pump and/or fuel pressure regulator, always reset the self-adaptive parameters with the dds and then use the motorcycle (even by simply running at idle speed) to allow the parameters themselves to recalibrate correctly.
Rear wheel
Right-hand wheel nut
Washer
Spacer
Valve
Wheel
Circlip
Spare parts catalogue
Diavel abs front and rear wheels
Diavel carbon
abs
front and rear wheels
Important
Bold reference numbers in this section identify parts not shown in the
figures alongside the text, but which can ...
Hands free system key-on and key-off
Key-on consists in turning on the hands free system and all
of its electronic devices.
Key-off consists in turning off the hands free system and all
electronic devices, and makes sure the engine is turned off.
Key-on is done using the button (6) on the handlebar on the
right switch or using ...
Passive key
Introduction
The passive key (1) is used when the active key is not working correctly or
is not available.
The passive key works as a transponder, and must therefore be placed physically
onto the antenna to work.
The mechanical part (2) of the key is used to open the seat or the tank plug ...