for
more than
3D-seconds without
allowing
the motor to cool for at least three
minutes.
Actually,
this time
can be spent
in making
preliminary
checks
to
determine
why the
engine fails to start.
Most starter
motors operate
in much the
same manner
and the service
work involved
in restor ing a defective
unit
to service
is
almost
identical.
Therefore,
the
informa-
tion in this chapter
is grouped together
for
the major components
of the
starter
under
separate
headings.
Differences,
where they
occur,
between
the
various
manufacturers,
are clearly indicated.
Theory of Operation
Power
is transmitted
from
the
starter
motor
to
the
engine
flywheel
through
a
Bendix dr ive,
This drive has a pinion gear
mounted on screw threads.
When the motor
is operated,
the
pinion gear
moves up into
mesh
with the
teeth
on the
flywheel
ring
gear.
When the engine starts,
the
pinion gear
is driven
faster
than
the
shaft,
and
as a
result,
it screws
out of mesh with the
fly-
wheel.
A rubber
cushion
is built
into the
Bendix dr ive to absorb the shock when the
pinion meshes
with the flywheel
ring gear.
The parts
of the
drive
MUST be properly
assembled
for
efficient
operation.
If the
drive is removed
for cleaning,
TAKE CARE
to assemble
the
parts
as shown in the
ac-
companying
illustration.
If the screw shaft
assembly is reversed,
it will strike the splin-
es and the rubber cushion will not absorb the
shock.
STARTER MOTOR
6-23
The sound of the motor
during cranking
is a good indication
of whether
the
starter
motor is operating
properly or not.
Natural-
ly, temperature
conditions
will affect
the
speed at which the starter
motor is able to
crank the engine.
The speed of cranking
a
cold engine
will be much slower than when
cranking
a warm
engine.
An experienced
operator
will learn
to recognize
the favor-
able
sounds of the
cranking
engine
under
var ious conditions.
Faulty Symptoms
If the starter
spins, but fails to crank the
engine,
the
cause
is usually
a corroded
or
gummy
Bendix drive.
The drive
should be
removed,
cleaned,
and given an inspection.
If the starter
motor cranks the engine to
slowly, the following are possible causes and
the corrective
actions that may be taken:
a- Battery
charge
is low.
Charge
the
battery
to full capacity.
b-
High
resistance
connections
at
the
battery,
solenoid,
or motor.
Clean and
tighten
all connections.
c-
Undersize
battery
cables.
Replace
cables with sufficient
size.
d-
Battery
cables
too
long.
Relocate
the
battery
to shorten
the
run
to the
starter
solenoid.
Maintenance
The starter
motor does not require
peri-
odic
maintenance
or
lubrication
EXCEPT
just a drop of light-weight
oil on the starter
shaft to ease movement
of the Bendix drive.
If the motor
fails to perform
properly,
the
STARTER
GROUND
SAFETY SWITCH
Functional
diagram
to
show current
flow
when the key switch
is
turned
to
the START position.
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...