Adjust the valve clearance as follows:
Loosen the lock nut (Item 1) [Figure 70-70-39].
Turn the adjustment screw (Item 2) [Figure 70-70-39] until the correct clearance is obtained.
NOTE: The clearance is measured between the rocker arm and valve stem tip (Item 3) [Figure 70-70-39].
Use the following sequence to set the valves [Figure 70-70-40] & [Figure 70-70-41]:
a. With the rocker arm rocking (valves 7 & 8) on No. 4 cylinder set clearance at No. 1 cylinder (valves 1 & 2).
b. With the rocker arm rocking (valves 3 & 4) on No. 2 cylinder set clearance at No. 3 cylinder (valves 5 & 6).
c. With the rocker arm rocking (valves 1 & 2) on No. 1 cylinder set clearance at No. 4 cylinder (valves 7 & 8).
d. With the rocker arm rocking (valves 5 & 6) on No. 3 cylinder set clearance at No. 2 cylinder (valves 3 & 4).
