Fuel Rail / Fuel Injector Installation - Polaris 850 MATRYX INDY XC 129 2021 Manual

FUEL RAIL / FUEL INJECTOR
INSTALLATION
IMPORTANT
Use Digital Wrench to reset the fuel injector break-in
timer when new fuel injectors are installed on the
engine, see Fuel Injector Break-In Timer Reset page
1.55.
WARNING
Gasoline is extremely flammable and explosive under
certain conditions. Do not smoke or allow open flames
or sparks in or near the fuel tank / fuel system.
NOTICE
The fuel rail, micro-dampers, and fuel hoses attached to
the rail are not serviceable.
IMPORTANT
Do not touch fuel injector inlets / outlets. Leave
protective caps in place while handling.
NOTICE
Fuel rail fasteners must be replaced each time they are
removed or loosened.
1. To reassemble fuel injectors, install a new blue O-ring
q w
, new green O-ring , and new rubber bushing
on each fuel injector. Apply a light film of engine oil on
the rubber bushings and O-rings.
NOTICE
Note the rubber bushings are installed cone-side into
bore.
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
2. Carefully pass the MAG fuel injector harness lead
between the fuel supply and return fittings.
Note that the fuel injector harness is secured to the
throttle body at the white tape marks with routing clips /
3. Install both fuel injectors / harness and fuel rail
assembly.
Do not damage the rubber bushings during injector
4. Install new fuel rail mounting fasteners
e
tighten the fasteners evenly. Once both fasteners are
seated, torque to specification.
Fuel Rail Fasteners:
First Pass: 5 ft-lbs (6.5 N·m)
Second Pass: 15 ft-lbs (20 N·m)
FUEL SYSTEM
NOTICE
cable ties.
IMPORTANT
installation.
o
. Hand-
TORQUE
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5
5.21