Page 225 - Manual Oficina Polaris RZR XP 1000 17-18

FUEL SYSTEM

FUEL PUMP

OPERATION OVERVIEW • If the key switch is not promptly turned to the "start"
An electric fuel pump assembly is used to transfer fuel to position.
the EFI system from inside the fuel tank. This assembly • If the engine fails to start.
includes the fuel pump, fuel filters, regulator and fuel
gauge sender. The pump is rated for a minimum output • If the engine is stopped with the key switch "on" (as in
of 25 liters per hour at 58 ± 2 psi (400 ± 14 kPa) and has the case of an accident).
two non-serviceable fuel filters.
In these situations, the “check engine” light will go on, but
will turn off after 4 cranking revolutions if system function
is OK. Once the engine is running, the fuel pump remains
on.

FUEL SENDER TEST
4
1. Remove the fuel pump assembly from the fuel tank.
Refer to Fuel Pump Replacement procedure.
2. Using an Ohm meter, measure the resistance of the
fuel sender as shown below.

# POSITION READING
q EMPTY position 450 Ω ± 5%
w FULL position 100 Ω ± 3%
q Fuel Line Connection r Pump / Sending Unit
Electrical Connection Measure between
e the two pins —
w Fuel Pump t Regulator
e Fuel Pick-up Filter 3. Allow the sender float to sit in the EMPTY position
and compare to specification.
When the key switch is turned to "ON", the ECU 4. Slowly move the sender float to the FULL position
activates the fuel pump, which pressurizes the system for and compare to specification.
start-up.
5. If the readings are out of specification, or if the
The ECU switches off the pump preventing the continued reading is erratic or LCD display “sticks”, check the
delivery of fuel in these instances: following before replacing the fuel pump assembly:
• Loose float

• Float contact with tank
• Bent float rod

9928492 R06 - 2017-2018 RZR XP 1000 / XP4 1000 Service Manual 4.31
© Copyright Polaris Industries Inc.