SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 124 / 377

POWR
Power unit
5-11
6P23H11
10. Check the valve clearances to the follow-
ing steps.
NOTE:
Note the measurement data.
11. Check the intake and exhaust valve
clearance for cylinder #4.
12. Turn the flywheel magnet an additional
120 ° clockwise and align the “ 2TDC ”
mark
g
on the flywheel magnet with the
pointer
b
.
13. Check the intake and exhaust valve
clearances for cylinder #5.
14. Turn the flywheel magnet an additional
120 ° clockwise and align the “ 3TDC ”
mark
h
on the flywheel magnet with the
pointer
b
.
15. Check the intake and exhaust valve
clearances for cylinder #6.
16. Similarly, check the valve clearances for
cylinders #1, #2, and #3 in order, and be
sure to turn the flywheel magnet 120
°
clockwise each time. Adjust the valve
clearances if out of specification.
Adjusting the valve clearance
CAUTION:
Do not turn the flywheel magnet or the
driven sprockets when the timing belt is
not installed. Otherwise the pistons and
valves or intake and exhaust valves will
collide with each other and be damaged.
1. Turn the flywheel magnet clockwise and
align the
“ 1TDC ” mark
a
on the flywheel
magnet with the pointer
b
.
2. Check that the “ II ” marks
c
on the port
driven sprockets are aligned, and check
that the
“ I ” marks
d
on the starboard
driven sprockets are aligned.
Valve clearance (cold):
Intake
e
:
0.20
±
0.03 mm (0.008
±
0.001 in)
Exhaust
f
:
0.34
±
0.03 mm (0.013
±
0.001 in)
S6P25110
#1
#3
#5
#2
#4
#6
PORT STBD
UP
EX IN EX IN
S6P25120
e
e
f
f
PORT STBD