Toro Multi Pro 1750 - Page 181

Multi Pro 1750 Page 6 − 7 Spray System
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Problem
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Possible Cause
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Spray pump doesn’t rotate
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Spray pump switch is OFF or is faulty.
Accelerator pedal not actuating throttle home switch − Operator
advisory “Pump Start Prevented−High Engine RPM”
Accelerator pedal is not properly adjusted
(see Chapter 3 − Kohler gasoline Engine).
Throttle home switch is dirty, corroded or damaged
(see Chapter 5 − Electrical System).
Spray pump drive belt is damaged or missing.
Spray pump drive electric clutch is not engaged or is faulty (see
Chapter 5 − Electrical System).
NOTE: To avoid damaging the spray pump drive, the spray pump switch
will only engage when the engine is at low idle and either the master boom
(spray enable) switch is disengaged or the master boom switch is en-
gaged but none of the boom spray switches are engaged.
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Erratic spray operation from booms
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Suction screen in spray tank is plugged.
Pressure filter is plugged (machine serial number above 315000000)
Spray nozzle(s) are clogged or damaged.
Boom bypass valves are not adjusted correctly.
Spray nozzles are different sizes.
Console boom switch(es) are dirty, corroded or damaged.
Boom valve actuator is worn or damaged.
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No spray output from one spray boom
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Hoses on boom are pinched or kinked.
Fuse for affected boom valve actuator is faulty (machine serial number
below 315000000).
Circuit breaker for affected boom valve actuator is faulty (machine
serial number above 315000000). Remove power from circuit for 20
seconds to reset circuit breaker.
Boom valve for affected boom is not opening.
Console boom switch for affected boom valve is dirty, corroded or
damaged.
NOTE: Check for 12 VDC at affected boom valve motor in both
directions (ON and OFF).
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Low spray rate from one boom nozzle
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Spray nozzle(s) are clogged or damaged on affected boom.
Spray nozzles are different sizes on affected boom.
Spray
System