
4.16
9924874 R02 - 2014
RZR
XP / XP 4 1000 Service Manual
© Copyright 2013 Polaris Industries Inc.
Seat Base Frame fasteners
8 ft-lbs (11 Nm)
6. Install regulator and fuse box to the block-off panel.
Torque fasteners to specification.
Regulator/Fuse Box fasteners
5 ft-lb (7 Nm)
7. Install fuel tank strap screw. Torque screw to
specification.
Fuel Tank Strap Screw
8 ft-lbs (11 Nm)
8. Reinstall rear and front center console, shift knob and
screws.
9. Reinstall seat belt mechanism. Torque bolt to
specification.
Seat Belt Mechanism Bolt:
40 ft-lbs (54 Nm)
10. Reinstall right rocker panel and all previously
removed fasteners.
11. Reconnect the fuel line and fuel pump electrical
harness. Verify connections are secure.
12. Reinstall the battery and battery bracket. Torque
fastener to specification.
Battery Bracket:
8 ft-lbs (11 Nm)
13. Install seats and test the fuel pump by turning the
ignition key on and listening for the pump to activate.
Check the fuel line fittings for leaks.
ELECTRONIC FUEL INJECTION
Principal Components
The Electronic Fuel Injection (EFI) system is a complete
engine fuel and ignition management design. This
system includes the following principal components:
• Check Engine Light
• Crankshaft Position Sensor (CPS)
• Dual Throttle Body / lntake Adapter
• Engine Control Unit (ECU)
• Engine Coolant Temperature Sensor (ECT)
• Fuel Filter(s)
• Fuel Injectors
• Fuel Pressure Regulators
• Fuel Pump
• Fuel Rail
• Fuel Supply/Return Lines
• Idle Air Control Valve (IAC)
• Ignition Coil
• Manifold Air Quality Sensor (MAQS)
• Wire Harness Assembly
EFI Operation Overview
The EFI system is designed to provide peak engine
performance with optimum fuel efficiency and lowest
possible emissions. The ignition and injection functions
are electronically controlled, monitored and continually
corrected
during
operation
to
maintain
peak
performance.
The central component of the system is the Bosch ME17
Electronic Control Unit (ECU) which manages system
operation, determining the best combination of fuel
mixture and ignition timing for the current operating
conditions.
An electric fuel pump is used to move fuel from the tank,
through the fuel supply line, to the fuel rail. Fuel pressure
regulators located in the tank and on the end of the fuel
rail, maintain system operating pressure and return
excess fuel back into the fuel tank. At the engine, fuel fed
through the fuel rail supplies fuel to the injectors, which
inject into the intake ports. The ECU controls the amount
of fuel by varying the length of time that the injectors are
"on."
This
range
can
vary
depending
on
fuel
requirements. The controlled injection of the fuel occurs
every other crankshaft revolution, or once for each 4-
stroke cycle. When the intake valve opens, the fuel/air
mixture is drawn into the combustion chamber, ignited
and burned.
ELECTRONIC FUEL INJECTION
Summary of Contents for 2014 RZR XP 1000
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