Evaluating Electric Clutches - MTD Garden Tractors User Manual

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tion. If there is no voltage, replace relay
one. See Figure 3-48.
Figure 3-48.
b. If voltage is present in relay one, check for
voltage on the red wire of relay two. See
Figure 3-49.
Figure 3-49.
c. If voltage is present, replace relay two.
4. If no voltabe is present at relay two, check for
voltage at the red wire on the ignition switch. If
there is no voltage, replace the ignition switch.
See Figure 3-50.
Figure 3-50.
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EVALUATING ELECTRIC CLUTCHES

This section will cover how to evaluate electric
clutches. You will need a multi meter to per-
form these tests.
1. To measure the clutch coil resistance, turn off
the engine and the PTO switch.
a. Disconnect the clutch wire connection.
b. Set the meter to check ohms.
c. Connect the meter lead wires to the wires
in the clutch connector.
Figure 3-51.
(1) If the meter reads below 2.40 ohms or
above 3.40 ohms, the clutch has failed
and needs to be replaced.
(2) If the meter reads between 2.40 and
3.40 ohms, proceed to measuring
clutch current draw. See Figure 3-51.
2. Set the meter to check amps using the 10 amp
scale.
a. Connect one meter lead wire to one wire in
the clutch connector and the other lead
wire to the corresponding wire in the mat-
ing connector.
b. Connect a short wire to the second wire in
both connectors.
3-23
3