Polaris RANGER 500 2018 Service Manual page 330

FUEL SYSTEM
CAUTION
It is possible for pressurized fuel to be present when
disconnecting the fuel line.
It is recommended to allow the vehicle to sit for a period
of one hour after shutting off the engine before
servicing the fuel pump. This allows the exhaust to cool
and fuel pressure to drop.
1. Tilt the cargo box.
2. Be sure the engine has cooled enough to work on.
3. Remove the seat and disconnect the negative battery
cable.
4. Thoroughly clean the fuel injector area if all dirt and
debris.
5. Hold a shop towel over the fuel line fittings and
remove the fuel supply line from the fuel rail.
6. Disconnect the harness from the fuel injector
7. Remove the two screws
to the cylinder head.
8. Carefully pull up on the fuel rail and injector to remove
them from the engine as an assembly. If the injector
stays in the cylinder head, grab the injector with your
fingers and gently pull and twist the injector unit to
remove from cylinder head. Take care not to damage
the fuel injector ends during removal.
9. Gently pull and twist to free the injector from the fuel
rail.
10. Upon installation of the new fuel injector, lightly
lubricate the injector O-rings to aid installation.
11. Install the new injector into the fuel rail. Be sure to
align boss in the injector with the slot in the fuel rail.
4.30
q
.
e
that mount the fuel rail
12. Thoroughly clean the area around the fuel injector
port on the cylinder head.
13. Lightly lubricate the injector O-rings and reinstall the
fuel rail / injector assembly into the cylinder head.
14. Install the fuel rail mounting screws and torque to
specification
Fuel Rail Mounting Screws:
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. Cycle key ON several times to pressurize the fuel
system, and inspect the fuel rail and injector for fuel
leaks.
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19. Reinstall the cargo box access panel.
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
TORQUE
7 ft-lbs (10 Nm)
© Copyright Polaris Industries Inc.