Troubleshooting - Toro 04356 Operator's Manual

Troubleshooting

Problem
Engine: g
The engine loses power.
The engine will not start. g
Hydraulic: y
There is no ground speed increase in
the #2 selection.
In the hydraulic system there is no #1
or reverse traction speed. The #2
speed is normal.
Possible Causes
1. The fuel tank is empty.
2. A fuel line is clogged or there is
debris in the fuel tank.
3. The fuel filter is clogged.
4. The oil level in the crankcase is
low.
5. The oil in the crankcase is
incorrect.
6. Carburetor fuel solenoid
7. The throttle cable is set incorrectly.
8. The choke is closed.
9. The air cleaner element is plugged.
10. The carburetor malfunctions.
11. The ignition malfunctions.
12. The cooling fins are plugged with
debris or the engine is overheating.
13. The engine has an internal
malfunction.
14. The pump coupling is loose.
15. The hydraulic system is
malfunctioning.
1. The ignition system is faulty.
2. The fuel tank is empty.
3. The starter system is
malfunctioning.
4. Carburetor fuel solenoid
1. The control lever is misadjusted.
2. The rear camshaft is misadjusted.
3. The mow/lift linkage is binding or
there is a broken lift pivot spring.
4. There are wrong detent parts in the
#4 spool.
5. The #2 or #3 spool relief valves are
stuck open. (The reel drive RPM
will also be low on the #1 or #3
cutting unit).
1. The disc seal between the #3 and
#4 valve sections is damaged or
missing.
2. The poppet inside the #4 spool is
stuck open or off its seat.
41
Corrective Action
1. Fill the fuel tank.
2. Clean the fuel tank. Use clean
gasoline.
3. Replace the filter.
4. Add oil to the proper level. Check
the level more frequently.
5. Replace it with the correct oil.
6. Check the solenoid and wiring.
7. Repair as necessary.
8. Readjust the choke.
9. Replace the element and service it
more frequently.
10. Repair as necessary.
11. Repair as necessary.
12. Clean the fins. Repair the engine
as necessary.
13. Repair as necessary.
14. Repair or replace the coupling.
15. Refer to hydraulic troubleshooting
below.
1. Repair as necessary.
2. Fill the fuel tank.
3. Check the connections, solenoid,
starter motor, and ignition switch.
4. Check the solenoid and wiring.
1. Adjust the control lever.
2. Adjust it by moving the right end or
the rear camshaft forward or the
left end rearward.
3. Lubricate or repair the machine.
4. Remove the valve bank and repair
the #4 spool assembly.
5. Remove and repair or replace the
relief cartridge.
1. Remove the valve bank and
replace the disc seal.
2. Remove the valve bank and repair
the #4 spool section.