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2.
Install the NGK B8EV plug in the MAG side
cylinder. Attach plug wire with metal con-
nector. Make sure the PTO side plug wire is
attached to a spark plug and is properly
grounded.
II
NOTE: Damage to the coils and COl unit
may result if the engine is cranked over
when the spark plugs are not properly grounded.
Fig. 8-13
,~----~
C
1\,1.
"ION HSlfR
0725-140
3.
Connect the yellow lead of the COl tester to
the MM-1 secondary adapter. Connect the
adapter to the MAG side high tension lead.
Connect the red tester lead to ground. Set the
tester on 70 HIGH and crank engine over
quickly. If the red light of the tester illumin-
ates. the high voltage output is satisfactory.
Charge Coil Output Test
1.
Disconnect the triple plug from the COl unit
to the magneto; then disconnect the single
red and black wire outside the triple plug.
Fig. 8-12
0725-189
Fig. 8·14
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100
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To Ground
0725-069
2.
Connect the red lead of the tester to the black
and red wire in the triple plug. Connect the
yellow lead of the tester to the single red and
black wire.
Repeat the test three times for conclusive
results. If the red light on the tester did not
illuminate. proceed to COl Unit Output test.
II
NOTE: If tester readings seem somewhat
erratic, reverse the tester leads. The leads
may be reversed without causing any damage to
the tester.
3.
Set the tester dial on 55 HIGH. Grasp recoil
and crank engine over quickly. If the light
illuminates. repeat the test three more times
for conclusive results; then proceed to
Trigger Coil Output Test. If the light does not
illuminate. replace the charge coil and
trigger coil as a set.
Fig. 8-15
COl Unit Output Test
1.
Disconnect the two wires connecting the COl
unit to the external coil.
2.
Connect the red tester lead to the black wire
coming from the COl unit.
3.
Connect the yellow lead of the tester to the
remaining white and blue wire coming from
the COl unit. Set the tester dial on 70 HIGH
and crank engine over quickly. If the tester
light illuminates. the external coil is bad.
Repeat the test three times for conclusive
results. If the light does not illuminate.
proceed to the Charge and Trigger Output
Tests.
135
=
D IGNITiON TESTER
0725-142
Trigger Coil Output Test
1.
Disconnect the triple plug connecting the
magneto to the COl unit; then disconnect the
single red and black wire located along side
the triple connector plug.
Ii..;
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