Valve Lash Adjustment
Whenever cylinder heads have been replaced or cylinder head bolts re-torqued, adjust valve lash before starting
Before adjusting valve lash, be sure valve bridges have been adjusted.
All valves can be adjusted quickly and accurately. Do not crank engine six times to position piston of each cylinder
on TDC. All valves are adjusted by cranking engine only twice.
1. Remove cover and gasket from both cylinder heads.
Be sure that No. 1 piston is on compression stroke by turning both push rods by hand to
determine that both intake and exhaust valves are closed. Valves are closed when push
rods are loose and can be turned easily.
2. Turn crankshaft until No. 1 piston is on compression stroke and timing pointer (Figure 33, Item 1) on front cover
is in line with TDC mark on vibration damper (Figure 33, Item 2). Figure 34 shows the numbering sequence of
Figure 34. Valve Arrangement.