Toro 91764SL User Manual
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Troubleshooting
Remove all jewelry, especially rings and
watches, before doing any electrical trou
bleshooting or testing. Disconnect the bat
tery cables unless the test requires battery
voltage.
watches, before doing any electrical trou
bleshooting or testing. Disconnect the bat
tery cables unless the test requires battery
voltage.
CAUTION
For effective troubleshooting and repairs, you MUST
have a good understanding of the electrical circuits and
components used on this machine. (See Electrical
Schematic.)
have a good understanding of the electrical circuits and
components used on this machine. (See Electrical
Schematic.)
Starting Problems
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.
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.
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.
by-passed, they must be reconnected for proper trou
bleshooting and safety.
Condition
Possible Cause
Correction
Engine fails to crank, regardless
Loose or corroded battery connec-
Clean and tighten connections.
of traction bail position.
tions.
Low battery charge.
Charge battery. Replace battery if
it will not hold a charge (also see
Battery does not charge under
General Run and Transport Prob
lems).
it will not hold a charge (also see
Battery does not charge under
General Run and Transport Prob
lems).
Circuit breaker open.
Reset circuit breaker. Find cause
for open circuit breaker and cor
rect. Replace circuit breaker if
faulty.
for open circuit breaker and cor
rect. Replace circuit breaker if
faulty.
Ignition key switch faulty.
Test switch and replace if faulty.
Neutral switch faulty.
Make sure switch is properly in
stalled and adjusted. Test switch
and replace if faulty.
stalled and adjusted. Test switch
and replace if faulty.
Start relay faulty.
Test relay and replace if faulty.
Starter solenoid faulty.
Test starter solenoid and replace
if faulty.
if faulty.
Starter is faulty.
Test starter and repair replace if
faulty.
faulty.
Engine is seized.
Repair engine.
Loose or damaged wiring.
Check connections. Repair wiring.
HydroJect
™
3000
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Troubleshooting