Arctic Cat HDX 500 2017, Service Manual

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6. Place a new gasket into position on the cylinder.
Place the alignment pins into position; then place the
head assembly into position on the cylinder making
sure the cam chain is routed through the chain cavity.
FI714
7. Install the four cylinder head cap screws with wash-
ers. Tighten only until snug.
FI725A
8. Install the two lower nuts securing the cylinder head
to the cylinder, one in front and one in rear.
9. In a crisscross pattern, tighten the four cylinder head
cap screws (from step 7) to 28 ft-lb. Tighten the two
lower cylinder head nuts (from step 8) to 20 ft-lb and
the cylinder-to-crankcase nuts (from step 4) to 8 ft-
lb.
10. With the timing inspection plug removed and the
cam chain held tight, rotate the crankshaft until the
piston is at top-dead-center. Aligning the “I” mark-
ing on the rotor to the marking on the magneto cover.
FI709
11. While holding the cam chain to the front, install the
rear cam chain tensioner guide into the cylinder
head. Install the pivot cap screw and washer. Tighten
to 11 ft-lb.
FI716
12. With the alignment pin installed in the camshaft and
the cam lobes directed down (toward the piston),
place the camshaft in position and verify that the tim-
ing mark on the magneto is visible through the
inspection plug and that the timing marks on the
camshaft sprocket are parallel with the valve cover
mating surface.
FI717

NOTE: When the camshaft assembly is seated,
make sure the alignment pin in the camshaft aligns
with the smallest hole in the sprocket.
13. With the alignment pin installed in the camshaft,
loosely place the cam sprocket (with the recessed
side facing the camshaft lobes) onto the camshaft
and place it into position with the cam chain over the
sprocket.
CAUTION
Keep tension on the cam chain to avoid damaging the
crankcase boss.