Installing The Cylinder Head - SELVA MARINE Blue Whale 250 EFI Service Manual

POWR
5. Tighten the knock sensor to the specified
torque, and then fasten the knock sensor
lead 1 and flushing hose 2 as shown.
1
2
NOTE:
Fasten the knock sensor lead so that it is
taut.
Knock sensor:
32 N·m (3.2 kgf·m, 23.6 ft·lb)

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
shown.
5-51
Power unit
1
2
S6P25900
in the sequence
PORT
6
5
2
1
4 3
8
7
9
0
A
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.
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)
3. Install the new filters and oil control valve
assemblies.
UP STBD
5
6
1
2
4
3
7
8
9
0 A
a 90˚
(T55)
S6P25910E
6P23H11