Operation Manual

66 MS 241 C
7.8 Troubleshooting, ignition system
Engine does not run
Stop switch:
– in position "
F"?
Check spark plug:
– Smeared with oil, black?
– Sooted?
– Electrode gap correct?
– Contacts shorted (threads)?
– Clean, adjust or replace spark plug,
b 7.5
Check spark plug boot:
– Firmly seated on spark plug (torsion
spring)?
– Torsion spring hook in center of ignition
lead?
– Spark plug boot damaged?
– Replace spark plug boot and/or torsion
spring if necessary,
b 7.5
Check ignition:
with ZAT 3 or ZAT 4
(use ZAT 3 as main spark gap
see TI 32.94),
b 7.4
1