61/65/70/75 Series Horizontal Shaft Engines
82
Stop switch
NOTE: On snow engines, test the remote (ignition)
stop switch first.All MTD horizontal engines
that are in use in North America have a stop
switch built into the throttle lever assembly.
MTD engines used on snow blowers have
an additional stop (ignition) switch in the
engine shroud.
Test the stop switch (throttle) by:
1. Remove the fuel tank by following the steps
described in Chapter 4: The Fuel System And Gov-
ernor.
2. Remove the engine shroud (snow engines) by fol-
lowing the steps described in Chapter 3: Air Intake
Systems.
3. Remove the blower housing.
4. Disconnect the lead that runs from the module to
the stop switch. See Figure 7.2.
5. Connect one lead of a digital multimeter to the lead
going to the stop switch. Connect the other lead of
the digital multimeter to a good ground.
6. Set the multimeter to the ohms (Ω) scale.
7. Operate the throttle lever while watching the multi-
meter.
• When the throttle is all the way to the right
(stop), the multimeter should read at or near
0.0Ω, indicating continuity. See Figure 7.3.
• When the throttle is all the way to the left (full
throttle), the multimeter should not show conti-
nuity. See Figure 7.4.
Figure 7.2
Disconnect switch
Figure 7.3
Ground
Switch lead
Continuity
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