Evinrude 4906B 4HP 1969 Owner's Manual page 206

5- Remove the end cap from the gener-
ator. After the cap has been removed, take
notice of the small dowel in the end of the
generator. This dowel ensures the cap will
be installed correctly
indexed in a matching hole in the cap.
the armature and upper cap out of the
frame.
ARMATURE TESTING
Testing for a Short
6- Position the armature
then hold a hacksaw blade over the arma-
ture core. Turn the growler switch to the
ON position. Slowly rotate the armature.
the hacksaw blade vibrates, the armature
commutator has a short.
when the dowel is
Pull
on a growler,
If
or
Clean the grooves
CHARGING CIRCUIT
between the commutator
ture. Perform the test again.
saw blade still vibrates during the test, the
armature has a short and MUST be replaced.
Testing for a Ground
7- Obtain a test lamp or continuity met-
er. Make contact with one probe lead on
the armature core and the other probe lead
on the commutator bar.
or the meter indicates continuity, the arma-
ture is grounded and MUST be replaced.
Checking the Commutator
8- Check between
as shown in the accompanying
The test light should light, or the meter
should indicate continuity.
tor fails the test, the armature
replaced.
Field Coil Test for Ground
9- Check to be sure the free end of the
field wire is not grounded to the frame and
6-17
bars on the arma-
If the hack-
If the lamp lights,
Bar
or check bar-to-bar
illustration.
If the commuta-
MUST be