Page 184 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ENGINE / COOLING SYSTEM

6. Install the valve spring with tightly spaced coils CYLINDER HEAD INSTALLATION
facing down toward the cylinder head.
NOTE
Head gasket and surfaces must be DRY and oil free.
Use care during assembly to keep oil and finger prints
off of gasket.

1. The four cylinder studs cannot be re-used after the
cylinder head cap nuts are removed. Install new
studs using commercially available stud installation
tool prior to cylinder head installation. Torque new
studs to specification.
NOTE
Stud Thread Pitch: M8 x 1.25

TORQUE
NOTE Cylinder Head Studs:
13 ft-lbs (17 Nm) (Replacement required)
Valve springs to be installed with the loosely spaced
coils q facing up.
2. Prepare cylinder head gasket sealing surfaces by
cleaning thoroughly to remove all residue. The new
7. Place the valve retainer w on the spring.
head gasket must be installed clean and dry, free
8. Compress the valve spring with valve spring from oil or grease.
compressor (PV-1253) and valve spring compressor
adapter (PU-51038). Compress spring only enough
to allow split keeper installation.
NOTE
To prevent damage to the valve seals, do not compress
the valve spring more than necessary to install the
keepers.

9. Install split keepers e with gap even on both sides.
10. Repeat this procedure for remaining valves.
11. Exercise each valve through its travel to ensure the
valve keepers are seated correctly.
12. Lubricate and install the valve tappet for each valve
in the order they were removed.
NOTE
NOTE Install head gasket with “Down” facing cylinder. The
gasket will not fit around the alignment pins if installed
If any valve train components were replaced, refer to
incorrectly.
“Valve Clearance Adjustment”, page 3.68
procedure prior to “Camshaft Installation / Timing”,
page 3.64 procedure. 3. Guide cam chain through a new head gasket r and
install the gasket on the cylinder, locating it on the
alignment pins.
4. Carefully set the cylinder head e in place on cylinder
studs and alignment pins.
5. Install and finger tighten the new cylinder head bolts
q evenly.
6. Install and finger tighten the cylinder head nuts w
evenly.

3.62 9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual
© Copyright Polaris Industries Inc.