Polaris RANGER 570 2020

3
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
3.1
ENGINE / COOLING SYSTEM
CHAPTER 3
ENGINE / COOLING SYSTEM
GENERAL ENGINE INFORMATION . . . . ............. .. . ............. . . . . . ............. .. .. ............. 3.5
GENERAL INFORMATION.. . . . ............. . . . . . ............. .. .. ............. . . . . . ............ . . . . . . . 3.5
SPECIAL TOOLS .. ........... .. . ............. . . . . . ............. .. .. ............ . . . . . ............. 3.5
ENGINE LUBRICATION SPECIFICATIONS ....... .............. .............. .. . ........... .. . . .. 3.5
OIL PRESSURE TEST........ .. . ............. . . . . . ............. .. .. ............. . . . . . ............ 3.6
ENGINE OIL FLOW CHART ........ . . . . . ............. ... ........... .. . ............. . . . . . ......... 3.7
ENGINE SPECIFICATIONS.......... ... ............. . . . . . ............. .............. .. . . ......... 3.8
ENGINE SERVICE ............ .............. .............. .. . ........... .. . . ............. . . . . . .......3.10
ACCESSIBLE ENGINE COMPONENTS ...... . . . . . . ............ .. .. ............. . . . . . ...........3.10
TOP-END SERVICE (ENGINE IN CHASSIS) ............. .............. .............. .. . .........3.10
ENGINE REMOVAL .. . . .. ........... ... ............. . . . . . ............. .............. ... .........3.10
ENGINE INSTALLATION.. ........... .. . . ............ . . . . . ............. .. .. ............. . . . . . ....3.13
ENGINE BREAK-IN PERIOD ....... . . . . . ............. ... ........... .. . . ............. . . . . . .......3.16
ENGINE LUBRICATION SPECIFICATIONS ....... .............. .............. .. . ........... .. . . .3.16
ENGINE MOUNTING AND TORQUE VALUES .. . . . ............. .. .............. . . . . . ............3.17
SETTING TDC (TOP-DEAD-CENTER) . . . . .. ............. .. .............. . . . . . ............. . . . . . .3.18
COOLING SYSTEM . . .. ........... .. . ........... .. . . .. ........... . . . . . .............. . . . . . ............3.20
COOLING SYSTEM ASSEMBLY VIEW AND COOLANT FLOW DIAGRAM........ . . . . . ...........3.20
COOLING SYSTEM SPECIFICATIONS . ............. . . . . . ............. .. .............. . . . . . .....3.21
COOLING SYSTEM PRESSURE TEST ..... ... ............. . . . . . ............. ... ........... .. . ..3.21
PRESSURE CAP TEST.......... .............. ... ........... .. . ............. . . . . . ............. ..3.21
RADIATOR .......... . . . . . ............. . . . . . ............. .. .. ............. . . . . . ............. . . . . .3.22
COOLANT DRAIN / RADIATOR REMOVAL ... . . . . . ............. .............. ... ........... .. . . .3.22
THERMOSTAT REPLACEMENT ... . . . .. ............. . . . . . ............. .............. ... .........3.23
COOLING SYSTEM BLEEDING PROCEDURE ............. . . . . . ............. .. . ............. . . .3.24
WATER PUMP COVER AND IMPELLER SERVICE (STATOR COVER REMAINS ON ENGINE) ...3.25
WATER PUMP MECHANICAL SEAL / OIL SEAL REPLACEMENT ..... .............. .. . . ........3.25
TROUBLESHOOTING ..... . . . . . ............. .............. .. . . ............. . . . . . .............. . . . . . ..3.31
ENGINE ....... . . . . . ............. .. .. ............. . . . . . ............. . . . . . .............. . . . . . .....3.31
COOLING SYSTEM . . . . .. ........... ... ............. . . . . . ............. .............. .. . . ........3.32
500CC SOHC ENGINE. ............. . . . . . ............. . . . . . .............. . . . . . ............. . . . . . ........3.33
ENGINE DETAIL, TORQUES / SEQUENCES ... . . . . . .. ........... ... ........... ... ............. . . . . . .3.33
ENGINE SPECIFICATIONS, 500. . ............. ... ........... ... ........... ... ............. . . . . . .3.33
ENGINE TORQUE SEQUENCES .... .. . ............. . . . . . ............. .. .............. . . . . . .....3.35
CRANKCASE SEALANT PATH .. .............. ... ........... .. . . ............ . . . . . . ............ ..3.37
CRANKCASE / TIMING CHAIN GUIDES / OIL PICKUP / REGULATOR VALVE........ ... .........3.38
CYLINDER / OIL FILTER / OIL PUMP / BREATHER ............. .. .. ............ . . . . . . ...........3.39
CAMSHAFTS / CYLINDER HEAD / FLYWHEEL / IDLER GEARS / STATOR COVER ......... . . . . .3.41
SPARK PLUGS / STARTER / THROTTLE BODY / VALVE COVER ... ... ............. . . . . . ........3.43
PISTON / CRANKSHAFT / BALANCE SHAFT ........ . . . . . ............. .............. ... .........3.45
ENGINE DISASSEMBLY / INSPECTION - TOP END . . . . . ............ .. .. ............. . . . . . ...........3.48