Page 132 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ENGINE / COOLING SYSTEM

PISTON / RINGS / CONNECTING ROD / CRANKSHAFT / BALANCE SHAFT / OIL PUMP
ITEM STANDARD SERVICE LIMIT
O.D. - Measured 90° to pin (9.5 mm) up from
piston skirt 3.068–3.07 in. / 77.946 - 77.984 mm

Piston Pin Bore I.D. .724–.740 in. / 18.4 - 18.8 mm .7100 in. / 18.036 mm
Piston
Piston Pin O.D. .708–.7086 in. / 17.995 - 18.00 mm .708 in. / 17.985 mm
Degree of fit Push fit (by hand) 68ºF / 20ºC
Top Ring .0074 - .0177 in. / 0.19–0.45 mm
Piston Installed
Rings Gap Second Ring .0074 - .0177 in.. /0.19–0.45 mm
Oil Control Rails .029 - 0.155 in. / 0.76–3.94 mm
Connecting Rod Small End I.D. .7086–.709 in. / 18.000 - 18.018 mm
Connecting rod small end radial clearance .0007-.0009 in. / 0.018 - 0.023 mm
Connecting
Rod
Connecting rod big end side clearance .0059–.0177 in. / 0.15 - 0.45 mm
Connecting rod big end radial clearance .0009–.0014 in. / 0.023 - 0.038 mm
Crankshaft Runout Limit (PTO and MAG) .002 in / 0.05 mm
Runout Limit (PTO and MAG) .002 in / 0.05 mm
Balance Bearing Journal O.D. (Water Pump End) Inspect by feel and fit. Replace
Shaft
bearings and / or carrier assembly if
Bearing Journal O.D. (Oil Pump End) damage or wear is found.
Rotor tip clearance .0059 in. / 0.150 mm

3.10 9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual
© Copyright Polaris Industries Inc.