IGNITION SYSTEM
52
Test for ignition that won’t turn off
MTD engines are turned off by removing the spark
from the engine. This is accomplished by shorting the
primary windings of the coil to ground.
If the engine does not stop when the key is
removed and/or the throttle is moved to the stop posi
-
tion:
1. Test the stop switch and the remote ignition
switch by following the procedures described in
the previous sections of this chapter.
NOTE: If the switches are working properly,
leave the front engine shroud off.
2. Remove the blower housing.
3. Move the throttle to the wide open throttle (rab-
bit) position.
4. Connect one lead of the multimeter to one of the
wires that goes to the remote switch.
NOTE: One wire will go to one of the module
screws to provide a ground path. The other wire
goes to the primary winding of the coil.
5. Set the multimeter to the ohms (Ω) scale.
6. Connect the other lead of the multimeter to a
good ground.
See Figure 7.8.
7. Repeat steps 6 - 8 on the other wire.
See Figure 7.9.
• The ground wire should have a resistance read-
ing of 0.2 Ω or less. If the reading is > 0.2 Ω,
check the ground at the module and check the
wire for a fault.
• The wire that goes to the primary windings of the
coil should have a resistance reading of approxi-
mately 1.0 Ω. If the reading is >1.2 Ω, replace
the coil.
Figure 7.8
One of the
Coil reading
wires
Figure 7.9
Blue wire
Ground reading
Ground wire
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