3-28
POWERHEAD
marks, chatter
marks,
uneven wear or over-
heating.
Clean the crankshaft
surfaces
with
crocus cloth.
Clean
the
crankshaft
and
crankshaft
bearing
with
solvent.
Dry the
parts,
but
NOT
the
bearing,
with
compressed
air.
Check
the
crankshaft
surfaces
a
second
time.
Replace
the
crankshaft
if the
sur-
faces
cannot
be cleaned
properly
for satis-
factory
service.
If the crankshaft
is to be
installed
for service,
lubricate
the surfaces
with light
oil.
The top and lower bearing
may be easily
removed
from
the
crankshaft.
The center
main bearing
has a spring steel
wire secur-
ing the
two halves
together.
Remove
the
wire,
and
then
the
outer
sleeve,
then
the
needle
bearings.
TAKE CARE
not
to lose
any
of
the
needles.
The outer
shell
is a
fractured
break
type
unit.
Therefore,
the
two halves of the shell
MUST
absolutely
be
kept as a set.
Check the crankshaft
bearing surfaces
to
be sure they are not pitted
or show any signs
of rust or corrosion.
If the bearing
surfaces
are
pitted
or
rusted,
the
crankshaft
and
bear ings must be replaced.
During an engine overhaul
to this degree,
it
is a good
practice
to
remove
the
seal
A crankshaft
cleaned and ready for installation.
Crankshaft
with
a
badly
corroded
"throw".
This
crankshaft
is unfit
for further
service.
from the top main bearing.
If the same type
of seal
is
used in the bottom
main bear ing,
remove that seal also.
ASSEMBLING
Insert
the proper number of needle bear-
ings
into
the
center
main
bearing
cage.
Install
the
outer
sleeve
over
the
bearing
cage.
Check
to be sure the
two halves
of
the outer
sleeve
are matched.
Again, these
two halves are manufactured
as a single unit
and then
broken.
Therefore,
the
hills and
valleys of the break absolutely
MUST
match
during installation.
Snap the retaining
ring into place around
the
bearing.
Slide the
upper
bearing
onto
the crankshaft
journal
at the upper end and
the lower
bearing
onto the lower end.
Ro-
tate
the installed
bearings
to be sure there
is no evidence
of binding
or
rough
spots.
The crankshaft
is now ready for installation.
INST ALLA TION
Installation
procedures
are given in Sec-
tion
3-15,
Cylinder
Block
Service,
under
Crankshaft
Installation.
3-15
CYLINDER
BLOCK
SERVICE
Inspect
the
cylinder
block
and cylinder
bores for cracks
or other
damage.
Remove
Crankshaft
with
the
upper,
center,
and
lower
main
bearings
installed.
Check
to be
sure the snap ring
on
the center
main bearing is installed.
Содержание 4906B 4HP 1969
Страница 5: ......
Страница 85: ...3 44 POWERHEAD EXHAUST COVER I LEVER Exploded drawing of a 5 5 hp powerhead 1956 60 principle parts identified...
Страница 87: ...3 46 POWERHEAD Exploded drawing of a 7 5 hp powerhead 1956 58 with principle parts identified...
Страница 88: ...CYLINDER BLOCK 3 47 HEAD GASKET RING...
Страница 89: ...3 48 POWERHEAD HEAD BYPASS COVER Exploded drawing of a 10 hp powerhead 1956 63 with principle parts identified...
Страница 90: ...CYLINDER BLOCK 3 49 THERMOSTAT EXHAUST COVER The...
Страница 137: ...4 46 FUEL LEVER AND LOW SPEED...
Страница 153: ...4 62 FUEL Exploded view of a pressure tyoe fuel tank with major parts identified...
Страница 157: ...4 66 fUEL...
Страница 177: ...5 18 IGNITION FLYWHEEL Exploded drawing of a typical magneto system Only one coil and set of points is shown...
Страница 271: ...8 12 LOWER UNIT PROPELLER Exploded drawing of the Weedless lower unit gear case with major parts identified...
Страница 285: ...8 26 LOWER UNIT Exploded drawing of a lower unit with a window for access to the shift connector...
Страница 412: ...A 16 APPENDIX Wire Identification 33 hp with Generator 1965 67...
Страница 413: ...APPENDIX A 17 o C...
Страница 414: ...Wire Identification 33 hp with Generator 1969 70...
Страница 415: ...APPENDIX A 19 Wire Identification 35 hp 1957 59...
Страница 416: ...A 20 APPENDIX Wire Identification 40 hp Standard Shift with Generator 1960 66...
Страница 417: ...APPENDIX A 21 UJ cc b Wire Identification 40 hp Standard Shift with Generator 1967 68...
Страница 418: ...A 22 APPENDIX ee I U Vl Z Z o U I I Wire Identification 40 hp Standard Shift With Generator 1969 10...
Страница 419: ...APPENDIX Wire Identification 40 hp Electric Shift with Generator 1961 66 A 23...
Страница 420: ...A 24 APPENDIX C 00 Wire Identification 40 hp Electric Shift with Generator 1967 68...
Страница 421: ...Wire Identification 40 hp Electric Shift with Generator 1969 70...
Страница 422: ...NOTES NUMBERS...