SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 138 / 377

POWR
Power unit
5-25
6P23H11
5. Turn the timing belt tensioner gradually
clockwise using a hexagon wrench, and
then insert a
ø 5.0 mm (0.2 in) pin
3
into
the hole
n
.
NOTE:
Leave the pin inserted into the timing belt
tensioner until the timing belt is installed
again.
6. Remove the timing belt from the driven
sprockets, then from the drive sprocket.
7. Align the “ ” mark
a
on the drive
sprocket with the mating surface of the
crankcase and cylinder block by turning
the crankshaft counterclockwise 60
°
gradually.
CAUTION:
Do not turn the crankshaft counterclock-
wise more than 60
° . Otherwise the piston
and valves will collide with each other and
be damaged.
8. Align the “ I ” marks
p
on the port driven
sprockets by turning them clockwise 60 °
gradually.
CAUTION:
Do not turn the driven sprockets clock-
wise more than 60
° , and do not turn the
starboard driven sprockets. Otherwise the
intake and exhaust valves will collide with
each other and be damaged.
9. Hold the intake driven sprocket using the
special service tool, and then remove the
variable camshaft timing cap
4
.
S6P25470E
3
n
S6P25200
S6P25480 S6P25480
a
S6P25480
PORT STBD
S6P25490
p
PORT
4
4
5
S6P25500