Polaris 850 MATRYX INDY XC 129 2021

3
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
3.49
850 ENGINE
ENGINE MODEL NUMBER MATRIX - 2021
MODEL YEAR VEHICLE ENGINE MODEL NUMBER
2021
850 Indy XC Launch Edition 129 / 137
S6186-8444-LO8R850 Indy VR1 129 / 137
850 Switchback Assault 146
ENGINE SPECIFICATIONS
ENGINE MODEL
NUMBER
RANGE
HEAD SQUISH
MM (INCHES)
PISTON-TO-
CYLINDER
CLEARANCE
MM (INCHES)
PISTON RING
END GAP
MM (INCHES)
TRIGGER-TO-
FLYWHEEL
GAP
MM (INCHES)
ALL ENGINES
MINIMUM
1.290 (0.051”) 0.145 (0.0057”) 0.40 (0.016”) 0.36 (0.014”)
NOMINAL
0.9 (0.035”)
MAXIMUM
1.630 (0.064”) 0.155 (0.0061”) 0.50 (0.020”) 1.34 (0.052”)
ENGINE / COOLING / EXHAUST