3.7
ENGINE
3
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
Engine Service Data
KEY - Std: Standard; OS: Oversize; ID: Inner Diameter; OD: Outer Diameter; Mag: Magneto Side;
PTO: Power Take Off
Cylinder Head / Valvetrain ES35C
Rocker Arm/Shaft
Rocker arm ID .3936 - .4007" (10.00 - 10.18 mm)
Rocker shaft OD .3925 - .3931" (9.972 - 9.987 mm)
Camshaft Cam lobe height
In
Std 1.1730" (29.795 mm)
Limit 1.1574" (29.40 mm)
Ex
Std 1.1637" (29.56 mm)
Limit 1.1480" (29.16 mm)
Cylinder Head Surface warpage limit .002” (.05 mm)
Valve Clearance
In Std .003" (.07 mm)
Ex Std .003" (.07 mm)
Valve Seat Angle Contacting width
In
Std .039" (1.0 mm)
Limit .063" (1.6 mm)
Ex
Std .039" (1.0 mm)
Limit .063" (1.6 mm)
Valve Stem diameter
In .1958 - .1960" (4.975 - 4.980 mm)
Ex .1950 - .1956" (4.955 - 4.970 mm)
Limit .1921" (4.9 mm)
Valve Guide Inner Diameter
In .1968 - .1973" (5.0 - 5.012 mm)
Ex .1968 - .1973" (5.0 - 5.012 mm)
Limit .1980" (5.03 mm)
Valve Spring
Free Length
Inner 1.275" (32.4 mm)
Outer 1.385" (35.2 mm)
Squareness
0.075” (1.9 mm)
Cam Chain
Install new as a part of any crankshaft
removal
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