MAINTENANCE AND ADJUSTMENT
Valve and valve seat wear decreases
valve clearance, upsetting valve timing.
If valve clearance is left un-
adjusted, wear will eventually
cause the valves to remain
partly open; which lowers per-
formance, burns the valves and
valve seats, and may cause seri-
ous engine damage.
Valve clearance for each valve
should be checked and adjusted in
accordance with the Periodic Mainte-
Inspection and adjustment should be
carried out only by a competent me-
chanic following the instructions in the