4.17
ELECTRONIC FUEL INJECTION
4
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
Fuel Injector Replacement
1. Remove the cargo box access panel.
2. Be sure the engine has cooled enough to work on.
3. Remove the driver’s seat and disconnect the negative
ba
ttery cable.
4. Thoroughly clean the fuel injector area if all dirt and
d
ebris.
5. Disconnect the fuel injector harness lead.
6. Hold a shop towel over the fuel line fittings and remove
the
fuel supply line from the fuel rail.
7. Remove the (2) screws that mount
the fuel rail 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 it can
be removed from the 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 in stallation o f the new fuel injector,
lightly
lubricate the injector O-rings to aid installation.
11. Install the new inje ct
or into the fuel rail. Be sure to
align boss in the injector with the slot in the fuel rail.
12. Thoroughly clean the area around the fuel injector port
o
n the cylinder head.
13. Lightly lubricate the injector O-
rings and reinstall the
fuel rail / injector assembly into the cylinder head.
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