Evinrude 4906B 4HP 1969, Руководство пользователя

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STARTER
Functional diagram
of
a typical two-cycle outboard
engine starter motor solenoid. Notice that the right-
hand small terminal is connected
to
ground
or a
safety
switch. The unit is NOT grounded through the mounting
bracket.
with the most common and easily corrected
areas listed first in each problem area.
The
connection number refers to the numbered
positions in the accompanying illustrations.
Perform the following quick checks and
corrective actions for following problems:
TESTING
FIRST THESE WORDS
The starter solenoid is actually nothing
more than a switch between the battery and
the starter motor. Several types of sole-
noids are used and many appear similar.
NEVER attempt to use an automotive-type
solenoid in a marine installation. Such prac-
tice will lead to more problems than can be
imagined. An automotive-type solenoid has
a completely different internal wiring cir-
cuit. If such a solenoid is connected into
the starter system, and the system is acti-
vated, current will be directed to ground.
The wires will be burned and the cut-out
switch will be burned and rendered useless.
Therefore, when installing replacement
parts in the starter or other circuits on a
marine installation, always take time to
obtain parts from a MARINE outlet to en-
sure proper service and to prevent damage
to other expensive components.
SAFETY WORD
Before making any test of the cranking
system, disconnect the spark plug leads at
the spark plugs to prevent the engine from
possibly starting during the test and causing
personal injury.
The following tests are to be performed
according to the faulty condition described.
The numbers referenced in the steps are
STARTER MOTOR 6-25
correlated with numbers on the accompany
circuit diagram on Page 26, to identify
exactly where the connection or test is to
made.
Starter Motor Turns Slowly
a- Battery charge is low. Charge the
battery to full capacity.
b-
Electrical connections corroded or
loose. Clean and tighten.
c-
Defective starter motor. Perform an
amp draw test. Lay an amp draw-gauge on
the cable leading to the starter motor No.5.
Turn the key to the START position and
attempt to crank the engine. If the gauge
indicates an excessive amperage draw, the
starter motor MUST be replaced or rebuilt.
Starter Motor Fails To Turn Over
Voltage Check
a- Check the voltage at No.2, the bat-
tery and ground.
b- If satisfactory voltage is indicated at
the battery, check the voltage at No.3, the
positive side of the starter solenoid. Weak,
or no voltage at this point indicates corrod-
ed battery terminals, poor connection at the
solenoid, or defective wiring between the
battery and the solenoid.
c- Test the voltage at No. 4-, the key. A
full l2-volt reading should be registered at
the key. Weak or no voltage at the key
indicates a poor connection at the solenoid,
or a broken wire between the starter sole-
noid and the key.
d- If satisfactory voltage is indicated
during Steps a, b, and c, connect a volt
meter at No.5 and ground, and then turn
the key switch to the START position. If
12-volts is registered at No.5 and the start-
er still fails to operate, the starter is defec-
tive and requires service. If voltage is NOT
present at No.5, proceed to the next sec-
tion, Testing Starter Solenoid.
Testing Starter Solenoid
a- Remove the heavy starter cable at
No.5, at the starter. This cable MUST be
disconnected prior to performing this test to
prevent the starter motor from turning and
cranking the engine. Connect a voltmeter
to No.6 (the starter solenoid), and ground.
Turn the key to the START position. The
meter should indicate 12-volts. If voltage is
not present at No.6, the key switch is
defective, or the wire is broken between the
key switch and the starter solenoid.