Assembling The Power Unit - SELVA MARINE Blue Whale 250 EFI Service Manual

POWR

Assembling the power unit

NOTE:
See the exploded diagram (5-55).
1. Assemble the piston 1, connecting rod
2, piston pin 3, and new piston pin clips
4.
NOTE:
• Face the mark a on the connecting rod in
the same direction as the "UP" mark b on
the piston.
• Always use new piston pin clips, and do not
allow the piston pin clip end to align with the
piston pin slot c.
2. Install the oil rings 5, second ring 6,
and top ring 7 to the piston with the "2R"
mark d of the second ring and the "R"
mark d of the top ring facing upward.
3. Offset the piston ring end gaps as
shown.
5-67
Power unit
5
#5
#4
#3
E
CAUTION:
Do not scratch the pistons or break the
piston rings.
NOTE:
After installing the piston rings, check that
they move smoothly.
4. Install the upper bearing into the con-
necting rod 2 and the lower bearing into
the connecting rod cap 8.
NOTE:
• Install the connecting rod bearings in their
original positions.
• Insert the projection e of the bearing into
the slots on the connecting rod cap and
connecting rod.
5. Install half of the main bearings 9 into
the cylinder block 0.
d
45˚ 45˚
#3
UP
#1,#4
6
#2
7
#1
d
R
S6P25A70
6P23H11
#2
#5