Service Manual
Toro battery tester. Set the
VOM
to
DC
Volts.
If
more
than one scale is available, set
it
to the first larger than
14
volts.
The battery should show a voltage between
12
and
14
volts. See Figures
113
and
114.
Figure
113
Figure
114
NOTE: Keep
in
mind that a dead battery can occur
due to a number of different causes.
Ignition Switch Testing:
Pull the connector
off
the back of the ignition switch
and test switch operation with a volt/ohmmeter
(VOM)
or
test
light.
The switch should be closed (very low
resistance)
in
the 'start' position and open (very high
resistance)
in
the
'off'
position. See Figure
115.
Wire Harness Testing:
Disconnect the wire harness from the ignition switch
and the starter motor. Check wires
A,
B,
and C (Figure
116)
for continuity by connecting a
VOM
or
test light to
Vacu-Power Mower
65
either end of each wire.
All
should be continuous.
If
not,
repair
or
replace the wire harness.
Figure
115
OF
WIRING
HARNESS
Figure
116
Check for short circuits by checking continuity
between each of the wires. None should be continuous
with the others unless attached to the same connector.
Finally, check each wire
for
continuity to ground by
attaching one test lead to ground (engine block) and
the other lead to one of the wires
in
the wire harness.
There should be no continuity between the wires and
ground unless the wire is
a
ground wire.
Starter Motor Testing:
Using a Key-Lectric starting battery that
is
known to
be
good, touch the connector directly to the connector on
the starter motor. See Figure
11 7.
The motor should
turn.
If
the mower doesn't turn,
it
is malfunctioning. Remove
the end cap
from
the motor and check for stuck
brushes
or
loose wires. Repair any problems found.
If
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