3-65
3
Installing Piston Rings
1. Install the expander spring making sure the ends are
aligned on the wire; then install the oil ring with the
ring gap 90° from the spring gap and the marking “E
TOP” directed toward the top of the piston.
GZ168
GZ169A
2. Install the second compression ring with the marking
“E TOP” directed toward the top of the piston.
GZ167
3. Install the first (unmarked) compression ring; then
rotate the rings so the ring gaps are approximately
180° apart and oriented to the piston pin.
GZ187A
CYLINDER/CYLINDER HEAD
ASSEMBLY
NOTE: If the cylinder/cylinder head cannot be trued,
they must be replaced as an assembly.
Cleaning/Inspecting Cylinder Head
1. Using a non-metallic carbon removal tool, remove
any carbon buildup from the combustion chamber
being careful not to nick, scrape, or damage the com-
bustion chamber or the sealing surface.
2. Inspect the spark plug hole for any damaged threads.
Repair damaged threads using a “heli-coil” insert.
3. Place the cylinder head on the surface plate covered
with #400 grit wet-or-dry sandpaper. Using light
pressure, move the cylinder head in a figure eight
motion. Inspect the sealing surface for any indication
of high spots. A high spot can be noted by a bright
metallic finish. Correct any high spots before assem-
bly by continuing to move the cylinder head in a fig-
ure eight motion until a uniform bright metallic
finish is attained.
Measuring Cylinder Head
Distortion
1. Remove any carbon buildup in the combustion
chamber.
2. Lay a straightedge across the cylinder head; then
using a feeler gauge, check the distortion between
the head and the straightedge.
3. Maximum distortion must not exceed specifications.
CAUTION
Incorrect installation of the piston rings will result in
engine damage.
CAUTION
The cylinder head studs must be removed for this pro-
cedure.
CAUTION
Water or parts-cleaning solvent must be used in con-
junction with the wet-or-dry sandpaper or damage to
the sealing surface may result.
Summary of Contents for 2013 Prowler XT
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Page 233: ... Printed in U S A Trademarks of Arctic Cat Inc Thief River Falls MN 56701 p n 2259 530 ...