Page 190 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ENGINE / COOLING SYSTEM

VALVE CLEARANCE ADJUSTMENT 4. Reference the valve clearance measurement
recorded for that valve, along with the 3 digit tappet
The Valve Clearance Adjustment Procedure only outlines
how to disassemble the camshaft / carrier assembly and number.
tappet replacement. To measure the valve clearance, 5. Reference the Intake and Exhaust Valve Lash –
reference the Valve Clearance Inspection Procedure. Tappet Selection Tables. See Intake Valve Lash -
Tappet Selection Matrix, page 3.70 or Exhaust Valve
NOTE Lash - Tappet Selection Matrix, page 3.71.
Always inspect valve clearance prior to camshaft 6. Install the correct tappet.
installation or final engine assembly. The following
procedure assumes the camshaft / carrier assembly is NOTE
already installed on the engine. If the camshaft / carrier
assembly is already removed from the cylinder head, it Lubricate the new tappet with a light film of engine oil
must be installed using the specified nut and screw prior to installation.
torque values to obtain accurate valve clearance
measurements. 7. Repeat steps 2-6 until all required valves have been
adjusted.
1. Remove the valve cover and camshaft / carrier 8. Reinstall the camshaft / carrier and valve cover.
assembly from the engine. See: Camshaft / Carrier
Removal , page 3.42. 9. If previously removed, reinstall the spark plug.
Torque spark plug to specification.
2. Remove the valve tappet(s) that require replacement
as a result of the valve clearance inspection. TORQUE
Spark Plug:
9 ft-lbs (12 Nm)Do Not Apply Anti-seize

10. Inspect the valve cover seal and replace if
necessary.
11. Install NEW isolators on the valve cover bolts. Install
the valve cover and the four T40 bolts. Torque bolts
to specification.
TORQUE

Valve Cover Bolts:
7 ft-lbs (10 Nm)

3. Record the 3 digit number on the bottom of each
tappet.

NOTE
This engine features one-piece tappets / shims. The
shims are not removable from the tappets.

3.68 9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual
© Copyright Polaris Industries Inc.