Polaris 850 MATRYX INDY XC 129 2021 Manual page 327

3. Remove the oil tank mounting fasteners
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washers securing the oil tank to the clutch guard.
Pull the oil tank away from the clutch guard just
enough to access the intake tube screw.
IMPORTANT
Do not damage the oil supply hose when moving the oil
tank.
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4. Remove the fastener securing the intake tube to
the air box and remove the side intake tube.
5. Disconnect the two connectors
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
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and 6. Remove the fasteners
ECU INSTALLATION
If installing a new service ECU, Digital Wrench must be
Digital Wrench will transfer the original ECU's data files
to the new ECU using the ECU replacement procedure.
1. Reinstall the fasteners securing the ECU to the intake
2. Verify the ECU wire harness connectors are clean
3. Reinstall the intake tube. Torque mounting fastener to
r
from the ECU.
4. Reinstall the oil tank. Torque oil tank fasteners to
5. Reconnect Digital Wrench to the vehicle and finish
6. Reinstall hood and side panels.
ENGINE ELECTRICAL
t
securing the ECU to the
intake plenum. Remove the ECU
NOTICE
used after completing the ECU installation process.
plenum. Torque fasteners to specification.
TORQUE
ECU Mounting Fasteners:
5 ft-lbs (7 N·m)
and dry. Reconnect the two ECU connectors. Verify
an audible "click" is heard as each connector is
seated into the ECU.
specification. Verify the tube fits into the plenum tube.
TORQUE
Lower Intake Tube Air Box Fastener:
36 in-lbs (4 N·m)
specification.
TORQUE
Oil Tank Mounting Fasteners:
7 ft-lbs (9 N·m)
the ECU replacement procedure.
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from the vehicle.
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