Benelli ZAFFERAN 250, Service Manual

Page: 171 / 187

171
Cautions for Fuel Pump Assembly Usage
Matters Reasons
Do not: break the fuel pump may lead to internal breakdown of the fuel pump
Do not: fuel pump "Dry Running" (No fuel in the may lead to internal breakdown of the fuel pump
33. installation torque of screws: 3
～
4Nm. The fuel assembly shall be fixed with specific
bolts and installed according to the specific orders and torques required. The wrong
torques and orders would cause deformation and leakage at the washers.
●
install the fuel tank onto the motorcycle;
●
connect the fuel hoses and tighten with appropriate clamps;
●
connect the fuel pump harness connecter;
● check for leakage in compliance with the chapter of "Fuel Leakage Inspection
Procedures" before running the engine.
17.2.9.9 Replacing the Pressure Regulator
● remove the fitting seat of the pressure regulator;
● remove the installation clamp of the pressure regulator with tools and prevent any
damages in the procedures;
●
take off the pressure regulator;
●
to avoid damaging the exterior of the adjuster;
●
put on lubricant around the O-ring of the new pressure regulator for the convenience of
installation;
● make sure that both O-rings are installed on the pressure regulator (one with larger
diameter and the other smaller);
● install the pressure regulator onto the seat of the fuel pump assembly bracket;
●
it is strictly prohibited to strike the pressure regulator (which would damage the device);
●
install the fuel pressure regulator clamp;
● replace with a new fuel pump assembly seal.
17.2.9.10 Fuel Leakage Inspection Procedures
Notice: do not go through this procedure on a hot engine.
Make sure the engine is cold and go through the following procedures:
●
the transmission is in neutral,
●
disconnect the connecter between the fuel pump assembly harness and motorcycle harness;
●
start the engine until it fires off automatically. Switch on and off the ignition key for 2 to
3 times continuously with an interval of 3 seconds.
●
with the above procedures finished, connect the connector of the fuel pump assembly
harness.
17.2.9.11 Fuel Leakage Inspection Procedures:
Finish maintenance of fuel system and make sure to go through the following fuel leakage inspection
● fill the fuel tank with enough fuel;
● turn on the ignition key for 3 seconds and turn it off for 15 seconds, and repeat this action for 3 to 4
times to build up the required fuel pressure within the fuel lines;
● check whether there is leakage on any parts of the fuel system (fuel tank, connection fuel pipe and
pipe joints, etc.)
17.2.9.12 Cautions for Fuel Pump Assembly Usage