Yamaha EF1000 Service Manual page 69

(R
x
1)
A
B
GENERATOTR SYSTEM
I
ELEC
I
u
I
4-11
DC coil resistance
1. Disconnect the DC coil coupler G).
2. Connect the pocket tester as shown.
DC coil resistance:
0.4330±10%
Out of
specification~Replace
stator assem-
bly.
DC rectifier continuitys
1. Remove the DC rectifier.
2. Connect the pocket tester as shown.
Continuity~Correct.
No
continuity~Replace
DC rectifier.
3. Connect the pocket tester as shown.
No
continuity~Correct.
Continuity~Replace
DC rectifier.
~:
Normal direction.
[ID:
Reverse direction.
Rotor remagnetized
1. Assembl the generator.
2. Start and turn the engine with no load.
3. Connect the battery (12V) to the con-
denser terminal at the moment and the
rotor will be magnetized instantly.
CAUTION:
Do not connect the battery more than a few
seconds. This may cause deteriorate the bat-
tery.