Stop Switch - MTD 61Series Professional Shop Manual

For Discount White Outdoor Parts Call 606-678-9623 or 606-561-4983
IGNITION SYSTEM

Stop switch

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:
NOTE: On snow engines, test the remote (igni-
tion) stop switch first.
1. Remove the fuel tank by following the steps
described in Chapter 4: The Fuel System And
Governor.
2. Remove the engine shroud (snow engines) by
following 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.
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
multimeter.
Disconnect switch
51
www.mymowerparts.com
• 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.
Throttle lever
Switch lead
continuity
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.
no continuity
Figure 7.4
Ground