SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 164 / 377

POWR
Power unit
5-51
6P23H11
5. Tighten the knock sensor to the specified
torque, and then fasten the knock sensor
lead
1
and flushing hose
2
as shown.
NOTE:
Fasten the knock sensor lead so that it is
taut.
Installing the cylinder head
1. Install the grommets and collars into the
cylinder block.
NOTE:
See the exploded diagram (5-41).
2. Install the new gaskets and cylinder
heads, and then tighten the bolts to the
specified torques in the sequence
shown.
CAUTION:
Do not reuse the cylinder head gaskets,
always replace them with new ones.
NOTE:
• Apply engine oil to the cylinder head bolts
before installation.
• Tighten the M10 bolts to the specified
torques in 6 stages first, and then tighten
the M8 bolts to the specified torques in 2
stages.
• Make a mark
a
on the M10 bolts and the
cylinder heads, and then tighten the bolts
90
° from the mark.
3. Install the new filters and oil control valve
assemblies.
T
R
.
.
Knock sensor:
32 N · m (3.2 kgf · m, 23.6 ft · lb)
S6P25900
1
2
1
2
T
R
.
.
Cylinder head bolt (M10):
1st: 23 N · m (2.3 kgf · m, 17.0 ft · lb)
2nd: 45 N · m (4.5 kgf · m, 33.2 ft · lb)
3rd: Loosen completely
4th: 23 N
· m (2.3 kgf · m, 17.0 ft · lb)
5th: 45 N · m (4.5 kgf · m, 33.2 ft · lb)
6th: 90 °
Cylinder head bolt (M8):
1st: 14 N · m (1.4 kgf · m, 10.3 ft · lb)
2nd: 28 N · m (2.8 kgf · m, 20.7 ft · lb)
90˚ a
S6P25910E
PORT UP STBD
(T55)
1
5
4
8
A
0
9
7
3
2
6
2
6
3
7
8
4
1
5
9
0 A