Toro 41393 Operator's Manual page 85

Problem
The engine loses power.
There is abnormal vibration or noise.
The machine does not operate or is
sluggish in either direction because the
engine bogs down or stalls.
The machine does not operate in either
direction.
Troubleshooting the Spray System
Problem
A boom section does not spray.
A boom section does not turn off.
A boom valve is leaking.
The pressure drops when you turn on a
boom.
Possible Cause
1. The crankcase-oil level is incorrect.
2. The air-cleaner element is dirty.
3. Dirt, water, or stale fuel is in the fuel
system.
4. The engine is overheated.
5. The vent hole in the fuel-tank-vent
fitting is plugged.
6. Low compression.
1. The engine-mounting bolts are loose.
2. There is a problem with the engine.
1. The parking brake is set.
1. The parking brake was not released or
the parking brake is not releasing.
2. The transmission is broken.
3. The control linkage needs adjustment
or replacement.
4. The drive shaft or wheel hub key has
been damaged.
Possible Cause
1. The electrical connection on the boom
valve is dirty or disconnected.
2. Blown fuse.
3. Pinched hose.
4. A boom-bypass valve is improperly
adjusted.
5. Damaged boom valve.
6. Damaged electrical system.
1. The valve is damaged.
1. An O-ring is deteriorated.
1. The boom-bypass valve is improperly
adjusted.
2. There is an obstruction in the
boom-valve body.
3. A nozzle filter is damaged or clogged.
85
Corrective Action
1. Fill or drain to the Full mark.
2. Replace.the air-cleaner element.
3. Drain and flush the fuel system; add
fresh fuel.
4. See Engine Overheats.
5. Replace the fuel cap.
6. Contact your Authorized Service
Dealer.
1. Tighten the engine-mounting bolts.
2. Contact your Authorized Service
Dealer.
1. Release the parking brake.
1. Release the parking brake or check
the linkage.
2. Contact your Authorized Service
Dealer.
3. Contact your Authorized Service
Dealer.
4. Contact your Authorized Service
Dealer.
Corrective Action
1. Turn the valve off manually. Disconnect
the electrical connector on the valve
and clean all leads, then reconnect it.
2. Check the fuses and replace them as
necessary.
3. Repair or replace the hose.
4. Adjust the boom-bypass valves.
5. Contact your Authorized Service
Dealer.
6. Contact your Authorized Service
Dealer.
1. Disassemble the boom-section valve;
refer to the section Cleaning the
Sprayer Valves. Inspect all of the parts
and replace any that are damaged.
1. Disassemble the valve and replace
the seals using the Valve Repair
Kit; contact your Authorized Service
Dealer.
1. Adjust the boom-bypass valve.
2. Remove the inlet and outlet
connections to the boom valve
and remove any obstructions.
3. Remove and inspect all nozzles.