Stihl TS 420 - Page 60

59TS 410, TS 420
Check flywheel:
– Have pole shoes turned blue?
– Replace flywheel if necessary,
b 8.5.
Air gap:
– Check ignition module / flywheel,
– adjust if necessary, b 8.1.1.
Check ignition lead:
– Severe chafing?
– Spark plug boot: holes /cracks?
– Resistance of spark plug boot to ground:
required: 1.5...12 kΩ
– Check resistance of ignition lead:
value required < 10 Ω
– Replace spark plug boot and/or ignition
lead if necessary, b 8.4.
Check short circuit wire:
– Wire damaged?
– Plug connections firmly seated?
– Check continuity, replace switch if
necessary, b 8.6.2.
1
3
yes
no
Spark
present?
2