49
MD1270
8. Install the two lower nuts securing the cylinder
head to the cylinder, one in front and one in rear.
MD1192
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.
CD383
12. With the alignment pin installed in the camshaft
and the cam lobes directed down (toward the pis-
ton), place the camshaft in position and verify that
the timing 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.
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.
MD1359
14. Place the C-ring into position in its groove in the
cylinder head.
MD1131
NOTE: At this point, oil the camshaft bearings,
cam lobes, and the three seating journals on the
cylinder head.
NOTE: Note the position of the alignment marks
on the end of the camshaft. They must be parallel
with the valve cover mating surface. If rotating the
camshaft is necessary for alignment, do not allow
the chain and sprocket to rotate and be sure the
cam lobes end up in the down position.
15. When the camshaft assembly is seated, ensure the
following.
A. Piston still at top-dead-center.
