5-9. VALVES MAINTENANCE INSTRUCTIONS - Continued
Inspect valves (2 and 9) for scoring on the 45°
Inspect stems of valves (2 and 9) and valve
guides (14) as follows:
Install exhaust valve (2) in cylinder head with
stem extending fully through the valve guide
Using a dial indicator set at measuring point
on valve stem as indicated, shift the valve
stem laterally and note the amount of move-
ment. If movement exceeds 0 0059 in (0.15
mm). both the valve and the valve guide must
Repeat steps a. and b. with the intake valve.
With valves (2 and 9) installed in cylinder head,
measure distance from bottom face of cylinder
head to bottom face of valves. If distance ex-
ceeds 0.0236 in. (0.600 mm), replace the valve.
Inspect valve springs (4 and 11) for cracks or bro-
Inspect exhaust roto cap (5), by spinning the cap.
Binding movement or presence of a rattling
sound indicate a defective roto cap.