Figure 5-13. Engine Crankcase Breather Sieve
5-20. Engine Tappet Clearance Adjustment (Figure 5-
14). To check tappet and adjust tappet clearance,
proceed as follows:
NOTE
Tappet clearance check and adjustment
shall be performed for both valves on
each cylinder when the engine is cold.
a.
Unscrew and remove glow plug frond cylinder
head cover. Using a six mm allen wrench,
iunscrew six 8 x 60 mm screws attaching
cylinder head cover to cylinder heads. Remove
cover.
b.
Using START switch turn engine until both
valves of cylinder one are closed.
c.
Disconnect negative battery cable.
d.
Using a feeler gauge, check for 0.004 inch (0.10
1m1) clearance between both valve stems and
rocker arms.
e.
If gap clearance is incorrect, loosen jam nut and
adjust adjusting screw until feeler gauge can be
pulled between valve stem and rocker arm with
just noticeable resistance. Tighten nut.
Figure 5-14. Engine Tappet Adjustment
Figure 5-15. Engine Compression Adjustment
5-13
