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9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
Camshaft Sprocket Inspection
NOTE: Camshaft sprocket removal is not necessary
unless the replacement of the sprockets is required.
Inspect cam sprocket teeth for wear or damage. Replace
timing chain and sprockets as a set if worn or damaged.
NOTE:
Replace intake camshaft sprocket bolt if
loosened or removed.
Intake Camshaft Sprocket Bolt:
33 ft-lb (45 Nm)
Camshaft Inspection
Inspect all main journals and cam lobes as described
below and compare to specifications. Replace camshafts
or cylinder head if worn beyond service limit or if any
surface is pitted or damaged.
1.
Visually inspect each cam lobe for wear or damage.
2.
Measure the height of each cam lobe from the base
circle to highest point on the lobe using a
micrometer. Compare to specification.
NOTE: Replace camshafts if damaged or if any
part is worn past the service limit.
Camshaft Lobe Height:
Intake: 1.5704" ± 0.0038" (39.89 ± 0.097 mm)
Exhaust: 1.5405" ± 0.0038" (39.13 ± 0.097 mm)
ENGINE
