Stihl BR 500 - Ignition System Troubleshooting

49BR 500, BR 550, BR 600
8.7 Ignition System Troubleshooting
Engine does not run
Check spark plug boot:
– Firmly seated on plug (leg spring)?
– Leg spring hook in center of ignition lead?
– Boot damaged?
If necessary, install new spark plug boot
and/or leg spring
Test ignition system with
ZAT3 or ZAT4
(use ZAT 3 as main spark gap
– see TI 32.94)
1
Check the spark plug:
– Smeared with oil, black?
– Sooted?
– Electrode gap correct?
– Contacts shorted?
Clean the plug, reset
or replace
RA_452_00_01_02.book Seite 49 Donnerstag, 16. Februar 2012 11:52 11