8.5
Section 8
Electrical System and Components
8
Problem Test Conclusion
6. Set an ohmmeter to the Rx1K or Rx10K scale
and zero. Connect one ohmmeter lead to the
kill lead (black/white) terminal and connect
the other lead into the spark plug cap.
a. Remove the cap from the spark plug lead
and test the resistance of the cap alone.
b. If resistances are other than specified,
remove the blower housing and remove
the ignition module. With the kill lead
and spark plug cap removed, test
resistance from the small spade terminal
to the core of the spark plug lead wire.
6. Resistance of the ignition module should be
13.5-18.0 K ohms.
a. Resistance of the cap should be
4-6 K ohms.
b. Resistance should be 9.5-12.9 K ohms . If
resistance is not in this range, replace the
module.
Engine Will
Not Start
7. Set an ohmmeter to the Rx1 scale and zero the
meter. Test the ignition/key switch as follows.
a. On manual start engines, trace the two
black leads from the on/off switch and
separate them from any connections.
Connect the ohmmeter leads to the switch
leads, and check for continuity in both
switch positions.
b. On electric start engines, trace the four
leads (red, red/white, black, black/white)
from the key switch and separate them
from any connections. Connect the
ohmmeter leads to the black and
black/white leads and check for continuity
in all three switch positions. Then connect
the ohmmeter leads to the red and
red/white leads and test again in all three
switch positions.
a. Continuity should be indicated when and
only when switch is in the ‘‘off’’ position.
Replace switch for any other results.
b. Continuity should be indicated between the
black and black/white leads only when the
key switch is in the off position. There
should be continuity between the red and
red/white leads only in the start position.
Replace switch for any other results.
Continuity No Continuity
Figure 8-3.
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