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

Page: 205 / 747

3
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
3.5
ENGINE
ITEM TORQUE
Water Pump Driven Shaft
Nut
(M8 x 1.25)
9 ft-lbs (12 N·m)
EV Valve Push / Pull
Cable
9 ft-lbs (12 N·m)
Exhaust Valve Tiebar
Fasteners
(M6 x 1.0 x 16)
14 ft-lbs (19 N·m)
EV Valve Push / Pull
Cable Fastener
(M6 x 1.0 x 12)
9 ft-lbs (12 N·m)
Exhaust Valve Base
Fasteners
(M6 x 1.0 x 30)
9 ft-lbs (12 N·m)
Exhaust Valve Base
Fasteners
(M6 x 1.0 x 50)
9 ft-lbs (12 N·m)
EV Actuator Mounting
Fasteners
(M6 x 1.0 x 15)
9 ft-lbs (12 N·m)
EV Actuator Push / Pull
Cable Jam Nut
13 ft-lbs (18 N·m)
Engine Mounting
Fasteners
(M10 x 1.5 x 40)
Excluding Front MAG
Engine Mount
48 ft-lbs (65 N·m)
Apply Loctite 262
Front MAG Engine
Mounting Fasteners
(M8 x 1.25 x 25)
22 ft-lbs (30 N·m)
Exhaust Manifold
Fasteners
First Pass: 11 ft-lbs
(15 N·m)
Second Pass: 22 ft-
lbs (30 N·m)
Fuel Rail Fasteners
(M7 x 1.0 x 63)
First Pass: 5 ft-lbs
(6.5 N·m)
Second Pass: 15 ft-
lbs (20 N·m)
Always discard fasteners
and replace with new.
Reed / Throttle Body
Adapter Fasteners
12 ft-lbs (16 N·m)
SERVICE SPECIFICATIONS
ENGINE
DESCRIPTION SPECIFICATION
Cylinder Head Warp Limit 0.006 in (.015 mm)
Cylinder Taper Limit 0.002 in (0.051 mm)
Cylinder Out-of-Round
Limit
0.002 in (0.051 mm)
Piston Measuring Point 0.98 in (25 mm)
Piston to Cylinder Service
Limit
0.0079 in (.200 mm)
Reed Valve Air Gap 0.015 in (.381 mm)
Connecting Rod Side
Clearance
0.030 in (0.762 mm)
Crankshaft Runout Limit
0.0025 in (0.030 mm)
ENGINE / COOLING / EXHAUST