4.18
ELECTRONIC FUEL INJECTION
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
14. Install th e fu el rail mo unting screws and torque to
specification.
15. Reinstall the fuel line to the fuel rail.
16. Connect the harness lead to the fuel injector.
17. Reconnect the negative battery cable and reinstall the
driver’s
seat.
18. Start the engine briefly and inspect the fuel rail and
injector for fuel leaks.
19. Reinstall the cargo box access panel.
FUEL PUMP
Operation Overview
An electric fuel pump assembly is used to transfer fuel to
the EFI system from inside the fuel tank. This assembly
includes th e fue l pu mp, fuel filters, r egulator a nd fu el
gauge sender. The pump is rated for a minimum output of
25 liter s pe r ho ur at 43 - 48 p si an d ha s two non-
serviceable fuel filters.
When the key switch is turned
to "ON", the ECU activates
the fuel pump, which pressurizes the system for start-up.
Fuel Rail Mounting Screws:
7 ft. lbs. (10 Nm)
Located in Fuel Tank
Fuel Pump
Regulator
Pump / Sending Unit
Preliminary Filter
Fuel Line
Connection
Connection
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