3.68
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
VALVE CLEARANCE ADJUSTMENT
The Valve Clearance Adjustment Procedure only outlines
how to disassemble the camshaft / carrier assembly and
tappet replacement. To measure the valve clearance,
reference the Valve Clearance Inspection Procedure.
NOTE
Always inspect valve clearance prior to camshaft
installation or final engine assembly. The following
procedure assumes the camshaft / carrier assembly is
already installed on the engine. If the camshaft / carrier
assembly is already removed from the cylinder head, it
must be installed using the specified nut and screw
torque values to obtain accurate valve clearance
measurements.
1. Remove the valve cover and camshaft / carrier
assembly from the engine. See: Camshaft / Carrier
Removal , page 3.44.
2. Remove the valve tappet(s) that require replacement
as a result of the valve clearance inspection.
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.
4. Reference the valve clearance measurement
recorded for that valve, along with the 3 digit tappet
number.
5. Reference the Intake and Exhaust Valve Lash –
Tappet Selection Tables. See Intake Valve Lash -
Tappet Selection Matrix, page 3.70 or Exhaust Valve
Lash - Tappet Selection Matrix, page 3.71.
6. Install the correct tappet.
NOTE
Lubricate the new tappet with a light film of engine oil
prior to installation.
7. Repeat steps 2-6 until all required valves have been
adjusted.
8. Reinstall the camshaft / carrier and valve cover.
9. If previously removed, reinstall the spark plug.
Torque spark plug to specification.
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)
ENGINE / COOLING SYSTEM
To Next Page
Loading...
Need help?
General
