Toro Workman 3000 Series Service Manual page 67

Symptom
Engine will not start or starts too hard (cranks OK).
Engine will not crank.
Engine dieseling.
Excessive oil consumption.
Poor fuel efficiency.
Workman 3000/4000 Series
Possible Causes
Ignition system problems.
Compression too low.
No fuel supply to carburetor.
Carburetor problems.
Vacuum leaks:
– Purge control valve hose.
– Vacuum hoses.
– Intake manifold.
– Carburetor.
Starting system faulty (see Chapter 8 – Electrical
System).
Incorrect ignition timing.
Carburetor problems.
Valve stem seal worn or damaged.
Valve step worn.
Piston ring worn or damaged.
Oil leak.
Positive crankcase ventilation line clogged.
Clutch slips.
Ignition problems.
Compression too low.
Carburetor problems.
Fuel leak.
Air filter clogged.
Page 3 – 29 Liquid Cooled Gas Engine