3
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
3.33
500CC SOHC ENGINE
ENGINE DETAIL, TORQUES /
SEQUENCES
ENGINE SPECIFICATIONS, 500
CAMSHAFT / CYLINDER HEAD / CYLINDER (IN. / MM)
Camshaft
Cam Lobe Height - Intake 2.0327" ± 0.0038" (51.63 ± 0.097 mm)
Cam Lobe Height - Exhaust 2.0657" ± 0.0038" (52.47 ± 0.097 mm)
Camshaft Journal O.D. - All (Standard)
MAG
1.374" - 1.375 " (34.899 - 34.920 mm)
PTO
1.256" - 1.257" (31.907 - 31.928 mm)
Camshaft Journal O.D. - All (Service Limit)
MAG
1.374" (34.889 mm)
PTO
1.256" (31.897 mm)
Camshaft Journal Bore I.D. - All (Standard)
MAG
1.3780" - 1.3788" (35.000 - 35.021 mm)
PTO
1.2600" - 1.2607" (32.000 - 32.021 mm)
Camshaft Journal Bore I.D. - All (Service Limit)
MAG
1.3802" (35.056 mm)
PTO
1.2619" (32.053 mm)
Camshaft Oil Clearance (Standard)
MAG
0.0031" - 0.0048" (0.080 - 0.122 mm)
PTO
0.0028" - 0.0045" (0.072 - 0.114 mm)
Camshaft Oil Clearance (Service Limit)
MAG
0.0066" (0.167 mm)
PTO
0.0061" (0.156 mm)
Camshaft End Play (Standard) 0.0069" - 0.0128" (0.175 - 0.325 mm)
Camshaft End Play (Service Limit) 0.0157" (0.4 mm)
Cylinder Head
Cylinder Head - Surface Warp Limit 0.0024" (0.060 mm)
Cylinder Head - Standard Height 4.745" ± 0.0020" (120.53 ± 0.05 mm)
Valve Seat
Contacting Width - Intake (Standard) .0591" ± 0.0039" (1.5 ± 0.10 mm)
Contacting Width - Intake (Service Limit) 0.0748" (1.9 mm)
Contacting Width - Exhaust (Standard) 0.0787" ± 0.0039" (2.0 ± 0.10 mm)
Contacting Width - Exhaust (Service Limit) 0.0945" (2.4 mm)
Valve Seat Angles
30.0° ± 1.5° / 45.0° ± 0.5° / 60.0° ± 1.5°
Valve Guide Valve Guide Inner Diameter
0.2741" - 0.2747" (6.963 - 6.978 mm)
Valve
Valve Lash (Cold) - Intake 0.006" ± 0.002" (0.152 ± 0.050 mm)
Valve Lash (Cold) - Exhaust 0.010" ± 0.002" (0.25 ± 0.050 mm)
Valve Stem Diameter - Intake
0.2731" - 0.2737" (6.938 - 6.953mm)
Valve Stem Diameter - Exhaust
0.2724" - 0.2730" (6.918 - 6.933 mm)
Valve Stem Oil Clearance - Intake
0.0003" - 0.0015" (0.010 - 0.040 mm)
Valve Stem Oil Clearance - Exhaust
0.0011" - 0.0023" (0.030 - 0.060 mm)
Valve Stem Overall Length - Intake 4.0256" (102.25 mm)
Valve Stem Overall Length - Exhaust 4.0280" (102.31 mm)
Valve Spring Free Length (Standard) 1.8756” (47.64 mm)
Cylinder
Cylinder - Surface Warp Limit
(mating with cylinder head)
0.00098" (0.025 mm)
Cylinder Bore - Standard 3.6614" ± 0.0003" (93.0 mm ± 0.008 mm)
Cylinder Out of Round Limit 0.001" (0.025 mm)
Cylinder Taper Limit 0.001" (0.025 mm)
Cylinder to Piston Clearance 0.00138" - 0.00256" (.035 - .065 mm)
ENGINE / COOLING SYSTEM
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