Yanmar 4TNV98 Service Manual page 101

2. Measure the distance (Figure 6-65, (1)) from the
cylinder head to the valve stem seal to ensure
proper clearance (Figure 6-65, (2)) between the
guide and seal. See Intake/Exhaust Valve and
Guide on page 67.
Figure 6-65
3. Place the cylinder head assembly on its exhaust
port side.
4. Place all the valves (Figure 6-66, (5)) in their
proper location in the cylinder head.
4TNV98 Engine
4TNV98 & 4TNE98 Diesel Engine
4TNE98 Engine
5. Place the cylinder head on the workbench with
the combustion side down. Install the valve spring
(Figure 6-66, (3)) and spring retainer (Figure 6-66,
(2)).
6. Using the valve spring compressor tool, compress
the valve spring.
7. Insert the valve keepers (Figure 6-66, (1)) and
slowly release the tension in the valve spring.
Repeat the steps on all the remaining valves.
99
Figure 6-66
Section 3. Engine