Troubleshooting; Starting Problems - Toro Groundsmaster 455-D Service Manual

Troubleshooting

CAUTION
Remove all jewelry,
watches, before doing any electrical trou ­
bleshooting or testing. Disconnect the bat ­
tery cables unless the test requires battery
voltage.
For effective troubleshooting and repairs, you MUST
have a good understanding of the electrical circuits and
components used on this machine. (See Electrical
Schematics and Diagrams section of this chapter.)

Starting Problems

Condition
___________________________________________________________________________________________
Starter solenoid clicks, but starter
will not crank. (If solenoid clicks,
problem is not in interlock
system.)
®
Groundsmaster 455-D
especially rings and
Possible Cause
Low battery charge
Loose or corroded battery cables.
Loose or corroded ground.
Faulty wiring at starter.
Loose starter mounting bolts.
Faulty starter.
Faulty starter solenoid.
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Study the operating characteristics preceding the elec­
trical failure to help identify the area of difficulty. Try to
isolate the failure to a specific functional system; then
check that area, repairing one component at a time.
Attempting to repair more than one system at one time
will lead to confusion.
Possible Causes and Corrections in the troubleshooting
charts should be checked in the order in which they are
listed.
If the machine being repaired has any interlock switches
by-passed, they must be reconnected for proper trou­
bleshooting and safety.
Correction
Charge battery. Replace battery if
it will not hold a charge.
Clean and tighten, or repair as
necessary.
Repair wiring.
Clean mounting surface and
tighten bolts.
Repair or replace starter.
Replace starter solenoid.
Troubleshooting