Kohler Courage SV710-740 Service Manual page 63

*NOTE: Ignition tester (Kohler Part No.
25 455 01-S), must be used to test ignition
on these engines. Use of any other tester can
result in inaccurate findings. The battery on
the unit must be fully charged and properly
connected before making any of these tests
(a battery that is hooked up or charged
backward will crank the engine, but it won't
have spark). Be certain the drive is in neutral
and all external loads are disconnected.
1. Locate the connectors where the wiring
harnesses from the engine and equipment are
joined. Separate the connectors and remove the
white kill lead from the engine connector. Rejoin
the connectors and position or insulate the kill
lead terminal so it cannot touch ground. Try to
start the engine to verify whether the reported
problem is still present.
NOTE: If the engine starts or runs during any of
the testing, you may need to ground the
kill lead to shut it down. Because you have
inturrepted the kill circut, it may not stop
using the switch.
a. If the problem goes away, the electrical system on
the equipment is suspect. Check the key switch,
wires, connections, safety interlocks, etc.
b. If the problem persists, the condition is associated
with the ignition or electrical system of the
engine. Leave the kill lead isolated until all
testing is completed.
c. Identify the white kill lead of the engine wiring
harness connector. Establish a connection to a
known good ground location. The engine should
kill completely. If not, or only one cylinder is
affected, go to Test 4, but also check the white kill
lead connection for the affected DSAI module.
1. With the engine stopped, disconnect one spark
plug lead. Connect the spark plug lead to post
terminal of spark tester (Kohler Part No.
25 455 01-S), and attach tester clip to a good
engine ground.
NOTE: If two testers are available, testing can be
performed simultaneously for both cylinders.
However, if only one tester is available, two
individual tests must be performed. The side
not being tested must have the spark plug
lead connected or grounded. Do not crank
the engine or perform tests with one spark
plug lead disconnected and not grounded, or
permanent system damage may occur.