ENGINE
5-18
6LPA Service Manual
Cylinder Head
© 2007 Yanmar Marine International
13. Remove the camshaft bearing cap bolts and
rocker arm bolts. Remove 7 bolts
(Figure 5-11, (A)) and loosen 14 bolts
uniformly in sequence as shown in Figure 5-11.
Figure 5-11
Figure 5-11
14. Remove the 7 bearing caps, 12 rocker arms, 6
holder clamps, rocker shaft assembly and the 7
upper camshaft bearings.
Note: Keep the bearings with the caps and the
rocker arms and nozzle holder clamps
installed with the rocker shaft, to ensure
reassembly in the same order.
15. Remove the camshaft, thrust plate and 7 lower
camshaft bearings.
Note: Keep the bearings together and in order
as disassembled, to ensure reassembly
in the same order.
16. Loosen and remove the 26 cylinder head bolts
uniformly in sequence as shown in Figure 5-12.
NOTICE: NEVER remove the bolts at random
or the head may warp or crack.
Figure 5-12
Figure 5-12
17. Lift the cylinder head from the cylinder block. If
needed use a suitable tool to insert between the
cylinder head and block to pry loose
(Figure 5-13, (1)). NOTICE: AVOID damaging
the cylinder block and head surfaces when
removing the cylinder head.
Figure 5-13
Figure 5-13
A
A
A
A
A
A
A
(4)
(
8
)
(12)
(14)
(10)
(6)
(2)
(
3
)
(7)
(11)
(1
3
)
(9)
(5)
(1)
00049
33
(2)
(4)
(6)
(14)
(20)
(22)
(25)
(2
3
)
(17)
(15)
(9)
(7)
(1)
(12)
(
8
)
(10)
(16)
(1
8
)
(26)
(19)
(11)
(24)
(21)
(1
3
)
(
3
)
(5)
00049
3
4
(1)
00049
3
5
