Polaris 850 MATRYX INDY XC 129 2021

3
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
3.1
ENGINE / COOLING / EXHAUST
CHAPTER 3
ENGINE / COOLING / EXHAUST
GENERAL INFORMATION. . . .. . . ... . ... . . .. . . .. . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . 3.5
SERVICE SPECIFICATIONS . ... . . .. . .... . .. . . ... . . .. . .... . .. . . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . 3.5
IMPORTANT ENGINE SERVICE NOTES . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . 3.5
SPECIAL TOOLS ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . . .. . . ... . .. . . ... . . .. . . ... . ... . . 3.6
ELECTRONIC OIL PUMP ... . . .. . . ... . .. . . ... . . .. . . ... . .. . . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... 3.8
ELECTRONIC OIL PUMP MOUNTING .... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . 3.8
ELECTRONIC OIL PUMP - FLOW OFFSET IDENTIFICATION. . . .. . . ... . . .. . .... . .. . . ... . . .. . .... . .. . . . 3.8
OIL PUMP LINE CONNECTIONS . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. .3.10
OIL CHECK VALVE FITTING HOSE CLAMP POSITION . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ...3.12
OIL SUPPLY HOSE ROUTING. . . .. . . ... . . .. . .... . .. . . ... . . .. . .... . .. . . ... . . .. . . ... . .. . . ... . . .. . . ... . .3.13
OIL INJECTOR CHECK VALVES. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. .3.14
EXTERNAL OIL INJECTOR CHECK VALVE REPLACEMENT . . ... . ... . . .. . . .. . . ... . ... . . .. . . .. . . ... . .3.14
CROSS SHAFT OIL GALLERY OUTLET CHECK VALVE . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ..3.15
CROSS SHAFT OIL GALLERY OUTLET CHECK VALVE TESTING . . . .. . . .. . . ... . ... . . .. . . ... . ... . ... .3.16
CROSS SHAFT OIL GALLERY OUTLET CHECK VALVE REPLACEMENT. . . ... . ... . ... . . .. . . ... . ... . .3.16
ELECTRONIC OIL PUMP - RESISTANCE CHECK .. . ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . ..3.22
ELECTRONIC OIL PUMP PRIME PROCEDURE . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . ... . . .. . . .3.22
ELECTRONIC OIL PUMP MANUAL PRIME PROCEDURE . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... .3.24
DIGITAL WRENCH - ELECTRONIC OIL PUMP FLOW OFFSET . . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . ..3.25
ELECTRONIC OIL PUMP – TROUBLE CODES / PROTECTION MODE . . ... . ... . . .. . . ... . ... . ... . . .. .3.27
CRANKCASE WEEP HOLE. ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . . .. . ... . . .. . . ... . . .. . ..3.27
OIL TANK . . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . . .. . .... . .. . . ... . . .. . .... . .. . .3.28
OIL TANK ASSEMBLY VIEW . . . .. . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ...3.28
OIL TANK REMOVAL .. . . ... . .. . . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . .3.29
OIL TANK INSTALLATION . . ... . . .. . . ... . . .. . .... . .. . . ... . . .. . .... . .. . . ... . . .. . . ... . .. . . ... . . .. . . ... . .3.30
ENGINE SERVICE . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . . .. . . ... . .. . . ... . . .. . . ... . ... .3.31
ENGINE REMOVAL .. . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ..3.31
ENGINE INSTALLATION... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . . .. . ..3.39
650 / 850 ENGINE . . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . ... . . .. . . .. . . ... . ... . . .. . . ... . ... . ... . . .. . . ...3.48
GENERAL INFORMATION. . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . . .. . ... . . .. . . ... . . .. . ..3.48
650 ENGINE. ... . . .. . . ... . ... . . .. . . .. . . ... . . .. . . .. . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . ..3.48
ENGINE MODEL NUMBER MATRIX - 2021 .. . ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ...3.48
ENGINE SPECIFICATIONS. ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . ... .3.48
850 ENGINE. ... . . .. . . ... . ... . . .. . . .. . . ... . . .. . . .. . . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . ..3.49
ENGINE MODEL NUMBER MATRIX - 2021 .. . ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . .. . . ...3.49
ENGINE SPECIFICATIONS. ... . . .. . . ... . ... . ... . . .. . . ... . ... . . .. . . ... . ... . . .. . . .. . . ... . ... .3.49
COMPONENT TORQUE SEQUENCES . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ..3.50
COMPONENT ORIENTATION VIEWS .. . . ... . . .. . .... . .. . . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... .3.54
CRANKCASE SEALANT PATH . . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... .3.55
ENGINE ASSEMBLY VIEWS . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . . .. . ... . . .. . . ... . . .. . ... . . .. . .3.57
CYLINDER ASSEMBLY VIEW .. . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . . ... . ... . ... . . .. . .3.57