Evinrude 4906B 4HP 1969 Owner's Manual page 78

Rod and cap with the alignment
CRANKSHAFT INSTALLATION
SMALL HORSEPOWER
BABBIT MAIN BEARINGS
BABBITT ROD BEARINGS
ALL 3.0 HP, 4.0 HP, AND 7.5 HP ENGINES
This section provides
tions to install a small horsepower
shaft with babbi tt upper, lower, and center
main bearings, and with babbitt rod bearings
on the engines listed in the heading.
The procedures
the piston/s have been installed, as describ-
ed earlier in this section.
Lower the crankshaft
cylinder block with the long threaded shank
end at the top of the cylinder block. (It is a
known fact, in more than just a few shops
around the country,
crankshaft installation
with the short end at the top.)
Pull the rod up to the crankshaft
Position the rod cap over the crankshaft
journal. Install the rod cap bolts and lock-
washers. Bring the bolts up fingertight,
then just a bit more.
Tighten the rod cap bolts alternately
evenly in three rounds to the torque value
Tightening the rod cap bolts
value.
marks visible.
ENGINES
AND
detailed instruc-
crank-
pickup the work after
into place in the
because of haste, the
work has proceeded
journal.
and
and
to
the proper torque
CYLINDER
Using two hammers
crankshaft.
given in the Torque Table in the Appendix.
Tighten the bolts to 1/2 the torque value on
the first round, to 3/4 the torque value on
the second round, and to the full torque
value on the third and final round. On each
round, check wi th the pick to be sure the
cap remains seated squarely.
Repeat the procedure for the other rod
and cap.
After the other rod cap has been install-
ed and the bolts tightened
torque value, hold one hammer on one side
of the rod and cap, and at the same time tap
the other side of the rod and cap with the
other hammer. Tap lightly on the top of the
cap. Reverse the hammer positions and tap
the opposite sides of the rod and cap.
procedure will "fit" the rod and cap to the
crankshaft journal.
Checking movement
with the flywheel temporarily
BLOCK
to to
fit the rod cap
to the proper
This
of the pistons and crankshaft
installed.
3-37
the