Service Manual

CONTROLS/LOCATION AND OPERATION
3 - 4 Single Stage Snowthrower Service Manual
CHECKING THE IGNITION SWITCH
The tools used to check for defective switches are a
continuity tester/light or an ohmmeter (Figure 15). A
continuity tester or ohmmeter, as the names imply, are
used to test for a completed current flow in an electrical
circuit. To test the ignition switch on your snowthrower:
Figure 15 0217-011
1. Remove the upper shroud.
2. Slide the terminal connector off the ignition switch
(Figure 16). With the key in the OFF position,
place the continuity light or ohmmeter leads, one
to each terminal on the ignition switch (Figure 17);
the light or meter, depending on the instrument
used, should show continuity. (The continuity light
should be on or the ohmmeter needle should
move to a zero ohms reading.) If not, the switch is
defective and needs to be replaced.
Figure 16 0217-012
CONTINUITY CHART FOR SWITCHING
Figure 17 0217-013
Now, turn the key to the ON position, the meter or
light from the tester should not indicate continuity
(Figure 18). (The continuity light, if being used,
should be OFF. An ohmmeter should move close
to ∞.) If not, replace the switch.
Figure 18 0217-015
Switch
ON
OFF
Continuity Light
light off
light on
Ohm Meter
Ohms
Zero Ohms
∞