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4.18
ELECTRONIC FUEL INJECTION
9923142 - 2011 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2010 Polaris Sales Inc.
Fuel Injector Replacement
1. Be sure the engine has cooled enough to work on.
2. Remove the seats and rear service panel: (see chapter 5)
• RZR / RZR S: Remove both driver and passenger seats
• RZR 4: Remove both rear passenger seats
3. Remove the rear cargo box (see chapter 5).
4. Place a suitable container below the quick connect plug at
the end of the fuel rail. Hold a shop rag over the plug and
remove it to depressurize the fuel system.
5. Disconnect the harness for the fuel injector(s) located next
to the ignition coil. Cut the plastic tie strap and push the
harness for the fuel injector(s) up over the air box to allow
fuel injector removal.
IMPORTANT: Take note of PTO and MAG fuel injector
harness connectors before disconnecting them. The
harnesses are different and can not
be connected
incorrectly (PTO - Gray; MAG - Black).
NOTE: The harness connector and locking spring is
bonded to the fuel injectors with an epoxy. DO NOT
attempt to disconnect the Bosch connector from the
fuel injectors. Damage will occur to the injector and/
or harness if attempting to separate at that location.
Separate the fuel injector from the vehicle harness
as shown in the illustration below.
6. Thoroughly clean the area around the fuel injectors
including the throttle body manifold.
7. Using a 6 mm hex wrench, loosen the fuel rail mounting
screw from the cylinder head. Carefully pull the rail away
from the injectors and remove the injector(s) from the
cylinder head along with the harness.
8. Reverse the previous steps to install the new injector(s) and
reassemble.
9. Lubricate O-rings lightly with oil to aid installation. Torque
the fuel rail mounting screw to specification.
Fuel Rail
Quick Connect
Plug
Fuel Injector
Harnesses
= T
Fuel Rail Mounting Screw
216 +/- 24 in. lbs. (24 Nm)
Disconnect Here
DO NOT
Disconnect Here
Fuel
Injector
Harness
Fuel Injectors
Fuel Rail
Mounting
Screw