Polaris 850 PRO-RMK 155 2.6" QD 2021, Manual

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9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
E-VES-II REMOVAL
The EV Actuator Learn Procedure is a Service Procedure
performed with Digital Wrench. The procedure erases
the full-closed and full-open cable travel settings in the
ECU, and then sweeps the actuator to “learn” the stop
positions.
Prior to completing the procedure, the software conducts
a fault check to ensure the system is operating correctly.
The EV Actuator Learn Procedure must be performed
whenever the following occurs:
• EV actuator is replaced
• EV actuator cable is replaced or removed from the tie
bar
• Any exhaust valve (upper or lower) is replaced
• Cylinder is replaced
The EV Actuator Learn Procedure does not need to be
performed if the actuator cable is removed from the
actuator and actuator jam nut bracket.
NOTICE
The EV Actuator Learn Procedure will not work if the
battery cannot supply the required voltage to the
actuator. Do not perform this procedure with a partially-
charged battery. Verify the battery provides a minimum
of 12.5 volts before attempting procedure.
Verify all wires are in good condition and connectors
are connected to the actuator, and ECU.
1. Remove the four exhaust valve base fasteners
q
.
2. Remove the exhaust valve base/guillotine valves
assembly
w
from the cylinder.
NOTICE
Refer to page 8.7 as needed to gain clearance for
removal.
NOTICE
Use caution to prevent the exhaust valve springs and
upper guillotine valves from separating when removing
the exhaust valve base/guillotine valves assembly.
3. Inspect and if damaged discard the base to cylinder
seals
e
. If no damage is present reuse the seals.
ENGINE / COOLING / EXHAUST