Component Testing; Ignition System Operation - Toro Greensmaster Flex 1800 Service Manual

Component Testing

For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the ON/OFF switch connector before
doing a continuity check on switch). Individual compo-
nents should be electrically isolated (e.g. disconnect all
leads or remove from circuit) from the circuit when
tested.
NOTE: For engine component testing information, re-
fer to the Subaru Service Manual.

Ignition System Operation

The engine on Greensmaster Flex machines has a
magneto ignition system consisting of an ignition coil, a
spark plug and permanent flywheel magnets. A flywheel
key maintains proper ignition timing.
Testing the Ignition System
NOTE: Do not remove spark plug from the engine when
testing the ignition system. The spark plug is necessary
to maintain normal starting speeds.
1. With engine not running, remove spark plug wire
from the spark plug and connect it to the spark tester
(see Special Tools in this chapter).
2. Connect spring clip of tester to a good, unpainted
ground on the engine block.
3. Make sure ON/OFF switch is in the ON position.
Also, make sure that the traction lever is in the NEU-
TRAL position.
4. Pull the engine starter rope and observe the spark
tester. Visible and audible sparks should be produced if
the ignition system is operating properly.
Greensmaster Flex 1800/1820/2100/2120
When testing
continuity with a multimeter (ohms setting),
make sure that engine is not running to prevent
current flow through the component.
The ignition system produces a dangerously
high voltage. Do not touch the spark plug,
ignition coil or spark plug lead when the engine
is running; you can receive a severe electrical
shock.
NOTE: If a sheared flywheel key exists, the spark tester
may indicate an operating ignition system but ignition
timing will be incorrect.
5. If visible and audible sparks are not produced, a
problem exists either with engine ignition components
or with machine components. To identify whether the
problem exists with the engine or the machine, discon-
nect the wire harness connector (violet wire) from the
engine primary wire and repeat step 4 above.
A. If visible and audible sparks are not produced
with the engine primary wire disconnected, the en-
gine ignition system is not operating properly. Refer
to the Subaru Service Manual for engine information.
B. If visible and audible sparks are produced with
the engine primary wire disconnected, machine
components (e.g. on/off switch, parking brake latch
switch, traction switch, interlock module, machine
wire harness) are damaged or faulty. Refer to ma-
chine component testing information in this section.
Page 5 - 11
CAUTION
electrical components
WARNING
Electrical System
for