43
ATV1027
16. Install the first cap screw (threads coated with red
Loctite #271) securing the sprocket and tab-washer to
the camshaft. Tighten only until snug.
GZ195
17. Keeping tension on the opposite cam chain, rotate the
crankshaft until the second cap screw securing the
sprocket to the camshaft can be installed; then install the
cap screw (threads coated with red Loctite #271) and
tighten to 11 ft-lb. Bend the tab to secure the cap screw.
GZ193
18. Rotate the crankshaft until the first cap screw (from
step 16) can be tightened; then tighten to 11 ft-lb.
Bend the tab to secure the cap screw.
19. Keeping tension on the rear cam chain, rotate the
engine forward 270° until rear piston is at TDC indi-
cated by timing mark R.
GZ060
20. With the cam lobes directed down (toward the piston),
maneuver the camshaft/sprocket assembly through the
chain and towards its seating position; then loop the
chain over the sprocket.
NOTE: Note the position of the alignment marks on
the end of the camshaft. They must slightly favor the
exhaust side of the cylinder. If rotating the camshaft
is necessary for alignment, rotate the sprocket inside
the chain until the alignment pin can be engaged in
the sprocket with the camshaft properly aligned to
the head.
H2-011
GZ190B
CAUTION
Care must be taken that the tab-washer is installed cor-
rectly to cover the alignment hole on the sprocket. If the
alignment pin falls out, severe engine damage will result.
CAUTION
Failure to keep tension on any loose cam chain may
cause severe engine damage.
AT THIS POINT
Return the engine to TDC on the front cylinder making
sure the cam lobes are directed downward to ensure
correct starting point for step 19.