Fuel Injector Test; Injector Replacement - Polaris Sportsman 850 Service Manual

ITEM PART
COLOR
NUMBER
q
1500198 Blue
w
5415066 Brown
IMPORTANT
Always install NEW o-rings when removing the fuel rail
or injectors.
IMPORTANT
Verify that the new top and bottom o-rings are installed
in the correct position and are lubricated with clean,
silicone-free oil.

FUEL INJECTOR TEST

If an injector is not operating, it can indicate either a bad
injector, or a wiring/electrical connection problem. Check
as follows:
• Remove the seat, left-hand side panel, and disconnect
the fuel injector(s).
• Using an ohmmeter, test for continuity by placing the
test leads on each pin of the injector.
• Resistance specification is 12Ω ± 5% (20°C, 68°F)
Fuel Injector Resistance Specification:
12Ω ± 5% (20°C, 68°F)

INJECTOR REPLACEMENT

1. Remove the intake/plenum. , page 3.25
2. Thoroughly clean the area on top of the throttle body
and around the injectors.
i
3. Disconnect the fuel line
disconnect clips.
POSITION
TOP OF
INJECTOR
BOTTOM OF
INJECTOR
by disengaging the quick
CAUTION
Ensure you have a shop rag to clean up the fuel that will
spill when removing this line.
4. Remove the two fasteners
5. Gently pull/pry up to disengage the fuel injectors from
their ports.
6. Carefully spread the injector to rail retaining clips just
enough to remove the injector.
7. Install is the reverse of removal.
8. Ensure to torque bolts to spec on install.
TORQUE
Fuel Rail Mounting Screws:
44 in. lbs (5 Nm)
TORQUE
Plenum to Throttle Body Fasteners:
7 ft-lbs (10 Nm)
FUEL SYSTEM
o
that retain the fuel rail.
4.29
4