2006 Ski Doo REV Service Shop Manual, Page 245Get this manual
Section 06 ENGINE MANAGEMENT (SDI) Subsection 01 (OVERVIEW)
FUEL DELIVERY SYSTEM
Diaphragm Fuel Pump
A conventional diaphragm fuel pump is used to supply fuel to the electric fuel pump reservoir located inside fuel tankThis reservoir is the fuel supply for the electric fuel pumpThis system allows more consistent fuel delivery under extreme riding angles and when the fuel tank level is low, which increases the fuel range per tankNOTE: bypass hole in the upper section of the pump reservoir allows fuel to enter or exit the reservoir depending of the conditionsA33C5PA
The fuel pressure regulator controls the pressure in the system and allows the excess of fuel to return to the fuel tankThe fuel pressure regulator regulates the fuel pressure at 400 kPa (58 PSI)
Fuel Rail
The fuel rail is small tube on which the four injectors are mountedIt ensures at all times that enough fuel at the right pressure can be delivered to the fuel injectorsThe fuel rail is fed by the fuel pump module