Service Manual

Mid-Size Walk Behind Service Manual 8 - 13
ELECTRICAL
Location
On the control panel, just below the T-bar.
Figure 236
mvc-886x
Testing
Disconnect the wires from the switch. Attach an
ohmmeter to the switch terminals. Continuity should
only be present when the switch button is depressed.
Bridge Rectifier
Purpose
A bridge rectifier changes alternating current to direct
current.
Location
Under the control panel at the upper handle.
Testing
A bridge rectifier is a box containing 4 diodes. The
easiest way to test a bridge rectifier is to disconnect all
wires and use an ohmmeter. Select any two terminals
that are side by side. Attach the ohmmeter probes and
note if continuity is present or not. Now switch the
probes. Continuity should be present one way and not
the other. Repeat the process for each pair of
terminals. If any two terminals register the same when
you switch the test probes the bridge rectifier must be
replaced.
Figure 237
mvc-078