Yanmar 3TNV82A-B Service Manual page 194

ENGINE
Figure 6-67
2. Measure the distance (Figure 6-68, (1)) from
the cylinder head to the valve stem seal to
ensure proper clearance (Figure 6-68, (2))
between the guide and seal. See
Intake / Exhaust Valve and Guide on page 6-7.
(2)
(1)
Figure 6-68
3. Place the cylinder head assembly on its
exhaust port side.
4. Place all the valves (Figure 6-69, (5)) in their
proper location in the cylinder head.
6-62
(1)
(2)
(3)
0001873
0001874
(7)
(6)
Figure 6-69
5. Place the cylinder head on the workbench with
the combustion side down. Install the valve
spring (Figure 6-69, (3)) and spring retainer
(Figure 6-69, (2)).
6. Using the valve spring compressor tool,
compress the valve spring.
7. Insert the valve keepers (Figure 6-69, (1)) and
slowly release the tension in the valve spring.
Repeat the steps on all the remaining valves.
Reassembly of Cylinder Head
1. Carefully clean both the combustion surface of
the cylinder head and the top surface of the
cylinder block. Then place a new cylinder head
gasket (Figure 6-70, (2)) on the cylinder block.
2. Position the cylinder head on the on the cylinder
head gasket.
TNV DI Service Manual
4-Valve Cylinder Head
(1)
(2)
(3)
(4)
(5)
0001867