9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
1.57
ENGINE SPECIFICATIONS
Engine Type
Patriot Liquid-Cooled /
Case Reed Induction
Model Number S6185-8444-LO8R
Displacement
840 cc
Number of Cylinders
2
Bore & Stroke 85 x 74 mm
Operating RPM ± 150
8250
Idle RPM ± 200 1800
Engagement RPM ± 200
3800
Thermostat Opening
Temperature
80-87 ° F / 29.7-30.6 ° C
FUEL SYSTEM
Type - Number of Fuel
Injectors
DC-CFI - 2
Throttle Body Marking
1205875
Throttle Body Bore
50 mm
TPS Voltage @ Idle
(Using Digital Wrench)
0.86 +/- 0.05 VDC
Fuel Pressure 58-60 PSI / 4.0-4.1 bar
Fuel Octane (R+M/2)
10% Ethanol Mode
Premium Mode
<91 Octane
(Non-Oxygenated)
OR
87/89/91+
(Up to 10% Oxygenated)
91+
(Non-Oxygenated)
TRACK
Width 15 in / 38 cm
Length
174 in / 441.96 cm
Pitch 3.0 in. / 7.62 cm
Lug Height 3.0 in. / 7.62 cm (Series 7)
Track Tension 0.625 - 0.75 in / 1.6 - 1.9 cm
Stud Protection
Maximum Stud Length
N/A
ELECTRICAL
Alternator Output
Operating Voltage
Watts @ 13.5 VDC (Total)
13.5-14.5 VDC
500
Idle Ignition Timing
(Variable - Based on RPM,
Pressure, and Temp.)
2° – 20°
Spark Plug
NGK BPR9ES
Spark Plug Gap
.027 in / .70 mm
FRONT SUSPENSION
Front Suspension Type
AXYS RMK React
Front Shock
Walker Evans Impact-
Extruded Monotube*
or
Walker Evans Comp. Adj.
Piggyback
Front Travel 9.0 in / 22.9 cm
Ski Type Gripper
Ski Center Distance
Setup Width
36 - 37 - 38 in / 91.4 - 93.9 -
96.5 cm
36.85 in / 93.6 cm
Overall Toe Out 1/8 - 1/4 in / 3 - 6 cm
* = Reference Steering / Suspension chapter for shock
settings.
REAR SUSPENSION
Rear Suspension Type
AXYS RMK
Front Track Shock (FTS)
Walker Evans Impact-
Extruded Monotube*
Rear Track Shock (RTS)
Walker Evans Impact-
Extruded Monotube*
or
Walker Evans Comp. Adj.
Piggyback
Rear Travel 16.0 in / 40.6 cm
* = Reference Steering / Suspension chapter for shock
settings.
For clutch settings; See 850 PRO-RMK / RMK Khaos
(155/163/174) 3.0 Track Clutch Settings page 1.61 later
in this chapter.
GENERAL INFORMATION
1
To Next Page
Loading...
Need help?
General
