Time Savers - Toro 315-8 User Manual

TIME SAVERS

The components are listed
alphabetically by noun, followed
The starter solenoid is located under the rear fender
by any adjectives. If you have
assembly to the right of the battery (Figure 8).
trouble finding a component, use
the Table of Contents at the front
of the Glossary section.
These three sections should be
all you need to diagnose
problems on individual
components.
The solenoid's purpose is simply to connect the
battery to the starter motor when the ignition switch
is turned to "START". The solenoid is used to protect
the ignition switch from the high current drawn by the
starter motor.
The solenoid has two primary parts. One is a coil of
wire wrapped around an iron core. Whenever 12 volts
is applied to the coil, it becomes a magnet. The other
part is a bar type switch (Figure 9). Because it has a
large contact area with the contact terminals it can
easily handle the high current loads required by the
starter motor.
When 12 volts is applied to the coil, it becomes an
electromagnet. This quickly pulls the bar toward
contacts and closes the switch. When power is
removed from the coil, the spring loaded bar returns
to its "normally open" position. The solenoid closes
and opens the switch very quickly. This minimizes the
"arcing" that can damage other types of switches.
The ignition switch is protected because only a small
amount of current is needed to activate the coil.
Demysti
The Glossary contains
information on virtually every
electrical part used on Toro
riding products.
C
A
1. Disconnect the solenoid from the wiring harness.
2. With a multimeter (ohms setting), check to ensure
that terminals "c" and "d" are open (no continuity)
(Figure 10).
solloc
3. Apply +12 VDC to terminal "a" and ground mounting
tab "b". Terminals "c" and "d" should now be closed
(continuity) (Figure 10).
4. You should be able to hear the solenoid switch
"click" when you make the connection.
C
(A) & (B) Coil Terminals
GLOSSARY
D
B
start sol
D
B
A
start sol
(C) & (D) Contact Terminals