Main Bearing Bolt And Crankcase; Side Bolt Installation; Bottom Seal Installation; Hp To 40 Hp Engines - Evinrude 4906B 4HP 1969 Owner's Manual

SPECIAL NOTE
Some model powerheads
"spaghetti" seal. If the engine being ser-
viced does not use the seal, apply a coating
of 1000 Sealer to the mating surface
cylinder block and the crankcase
remaining installation
all powerheads.
After the seal
cylinder block have been installed,
apply a light coating of 1000 Sealer to the
outside edge of the "spaghetti"
Next, lower the
place on the cylinder block.
guide centering pins through the cover and
into the block. The centering
tapered. Therefore,
and notice which side has the large hole and
which has the small hole.
inserted into the large hole first.
is installed into the small hole first,
crankcase cover or the cylinder
break.
MAIN BEARING BOLT AND
CRANKCASE SIDE BOLT INST ALLA TION
Apply a coating
threads of the main bearing bolts.
and tighten the main bearing
tight and then just a bit more.
Tighten the main bearing
nately and evenly in three
torque value given in the Torque Table in
the Appendix. Be sure to check the Specifi-
cations in the Appendix for the engine being
serviced.
Installing the main bearing bol
case cover into the cylinder block.
do not use the
of the
cover. The
instructions apply to
on both sides of the
if used,
seal.
crankcase cover into
Install the two
pins are
check the crankcase
The pin must be
If the pin
the
block will
of 1000 Sealer to the
Install
bolts finger-
bolts alter-
rounds to the
ts
through the crank-
CYLINDER
Tighten the bolts to 1/2 the total torque
value on the first round, to 3/4 the total
torque value on the second round, and to the
full torque value on the
round.
As an example:
specified is 200 t-Ibs, the bolts should be
f
tightened to 100 ft-Ibs
around; to 150 ft-Ibs on the second round;
and to the full 200 ft-lbs on the third round.
Install and tighten
bolts to the torque
pendix.
Install the Woodruff key in the crank-
shaft. Slide the flywheel
shaft. Rotate the flywheel through several
revolutions and check to be sure all moving
parts indicate smooth operation
idence of binding or "rough" spots.
Remove the flywheel
key.
BOTTOM SEAL INSTALLATION

15 HP TO 40 HP ENGINES

This type of seal
crankshaft on the 15 and 40 hp engines.
the smaller engines,
crankshaft with a spring, O-ring, and gasket.
These items push up against
the power head to affect the seal.
Install the quadrant
quadrant seal holder with the lip of the seal
facing toward the BOTTOM of the cylinder
block.
Apply a small amount of light-weight
onto the quadrant O-ring, and then slide the
ring onto the crankshaft.
washer, spring, and small washer, onto the
crankshaft, and secure them in place with
the truarc snap ring.
Installing the lower
crankshaft.
BLOCK
third and final
If the total torque value
on the first go-
the crankcase side
value given in the Ap-
onto the crank-
without ev-
and the Woodruff
is attached to the
a seal is used on the
the bottom of
O-seal into the
Slide the large
main seal assembly to
3-39
On
oil
the