49
FI622A
C. Cylinder Head/Camshaft
D. Cylinder Head Cover/Rocker
Arms
NOTE: Steps 1-4 in the preceding sub-section must
precede this procedure.
5. While keeping tension on the cam chain, place the
front cam chain guide into the cylinder.
FI621
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.
MD1347
7. Install the four cylinder head cap screws with wash-
ers. Note that the two cap screws on the right side of
the cylinder head nearest the cam sprocket are longer
than the two cap screws on the left (spark plug) side.
Tighten only until snug.
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.
11. While holding the cam chain sprocket to the side,
install the rear cam chain tensioner guide into the
cylinder head. Install the pivot cap screw and washer.
Tighten to 11 ft-lb.
CD383
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 cylinder head
cover mating surface.
CAUTION
Care should be taken that the bottom of the chain guide
is secured in the crankcase boss.
CAUTION
Keep tension on the cam chain to avoid damaging the
crankcase boss.
