Toro 41394 Operator's Manual page 96

Troubleshooting the Spray System
Problem
A spray section does not spray.
A spray section does not turn off.
A spray section valve is leaking.
The pressure drops when you turn on a
spray section.
The spray nozzle(s) drip when the section
switch(es) is shut off
The sprayer pressure drops while
spraying.
Possible Cause
1. The electrical connection on the
section valve is dirty or disconnected.
2. There is a blown (open) fuse.
3. There is a pinched hose.
4. A section bypass is improperly
adjusted.
5. There section valve is damaged.
6. The electrical system is damaged.
1. The valve is damaged.
1. An O-ring is deteriorated.
2. A valve seat is worn or damaged.
1. The section-bypass valve is improperly
adjusted.
2. There is an obstruction in the
section-valve body.
3. A nozzle filter is damaged or clogged.
1. Debris has accumulated between
the nozzle body and the check-valve
diaphragm.
1. The suction filter screen is clogging or
clogged.
96
Corrective Action
1. Turn the valve off manually. Disconnect
the electrical connector on the valve
and clean all leads, then connect it.
2. Check the fuses and replace them as
necessary.
3. Repair or replace the hose.
4. Adjust the section bypass.
5. Contact your authorized Toro
distributor.
6. Contact your authorized Toro
distributor.
1. Disassemble the spray section valve;
refer to the section Cleaning the
Section Valves. Inspect all parts and
replace any that are damaged.
1. Disassemble the valve and replace
the seals using the Valve Repair
Kit; contact your authorized Toro
distributor.
2. Remove the valve actuator and
replace the valve seals and seat using
the Valve Repair Kit; contact your
authorized Toro distributor.
1. Adjust the section-bypass valve.
2. Remove the inlet and outlet
connections to the section valve
and remove any obstructions.
3. Remove and inspect all nozzles.
1. Clean the nozzle body and diaphragm;
refer to Cleaning the Nozzle Body and
Check-Valve Diaphragm.
1. Remove and clean or replace the
suction filter.