ENGINE
6LPA Service Manual
5-19
Cylinder Head
12/05
© 2007 Yanmar Marine International
Cylinder Head Disassembly
1. Remove the valve bridge (Figure 5-14).
Note: Keep the valve bridges together and in
order by identifying and marking them by
the cylinder number and intake or
exhaust side.
Figure 5-14
Figure 5-14
2. Compress the valve spring using special tool
P/N 119770-02000 (Figure 5-15, (1)) and
remove 2 cotters. Perform for all valves.
3. Remove the spring retainer, valve spring, valve,
and spring seat. Perform for all valves.
Note: Keep the valve, valve spring, spring seat
and spring retainer together and in the
order as disassembled, to ensure
reassembly into their original positions.
Figure 5-15
Figure 5-15
4. Remove the all stem seals using needle nose
pliers (Figure 5-16).
Figure 5-16
Figure 5-16
00049
3
9
(1)
0004940
0004941