Toro Greensmaster TriFlex 3320/3420 Service Manual page 183

Starting Problems (continued)
Problem
Engine cranks, but does not start.
Engine cranks (but should not) with the functional
control lever in the MOW or TRANSPORT position.
The engine glow plug circuit does not operate properly
(Greensmaster 3420 machines).
The engine starts, but stops when the ignition switch is
released from the START position (Greensmaster
3420 machines).
Greensmaster 3320/3420
Possible Causes
The fuel tank is empty.
The fuel filter is plugged.
Engine and/or fuel may be too cold.
Wiring to start circuits is loose, corroded or damaged
(see electrical schematic in Chapter 10 -- Foldout
Drawings).
Engine or fuel system is malfunctioning (see Chapter 3
-- Gasoline Engine or Chapter 4 -- Diesel Engine).
Kill relay or circuit wiring is faulty (Greensmaster 3320
machines).
Fusible link to fuel solenoid pull coil is faulty
(Greensmaster 3420) (see Fusible Links in the
Component Testing section of this chapter).
Fuel solenoid or circuit wiring is faulty.
Fuel pump or circuit wiring is faulty (Greensmaster
3420 machines).
The engine glow plug circuit does not operate properly
(Greensmaster 3420 machines) (see below).
Neutral switch is out of adjustment or is faulty.
Circuit wiring for neutral switch is loose, corroded or
damaged.
Wiring in the engine glow circuit is loose, corroded or
damaged (see electrical schematic in Chapter 10 --
Foldout Drawings).
One (or more) of the engine glow plugs is faulty.
Fuse(s) is (are) faulty (see Fuse Block in the
Component Testing section of this chapter).
The fusible link harness at the engine starter motor is
faulty (see Fusible Links in the Component Testing
section of this chapter).
The glow relay is faulty.
The TEC Controller is faulty.
The engine fuel stop solenoid or circuit wiring is faulty
(pull coil operates but hold coil or circuit wiring is
faulty).
Fuse(s) is (are) faulty (other electrical components
most likely affected as well).
The ignition switch is faulty.
Page 6 - - 33 Electrical System