Adjusting The Valve Clearance - SELVA MARINE Blue Whale 250 EFI Service Manual

POWR
10. Check the valve clearances to the follow-
ing steps.
IN EX
#2
#4
#6
PORT
f
e
STBD
NOTE:
Note the measurement data.
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)
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.
5-11
Power unit
UP
EX IN
#1
#3
#5
STBD
S6P25110
f
PORT
S6P25120
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°
e
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.
6P23H11