Husqvarna TE 250 Workshop Manual page 302

ELECTRIC SYSTEM, DIGITAL INSTRUMENT
Ignition coil resistance check
To gain access to the electronic coil (1) remove the saddle and the fuel tank (see
pages E.15-E.23). Detach the ignition coil from main wiring harness. Remove the
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fastening screws, the ignition coil then measure the resistance in the primary and
secondary windings using a tester.
- Primary winding resistance: 4.5 Ω ±15% a 20°C.
- Secondary winding resistance: 5 KΩ ±20% a 20°C (without spark plug cap
cable).
If the resistance is not between the specified values, replace the electronic coil.
Also, check the resistance of the terminal cap contact with the spark plug.
- Terminal cap resistance: 4.5÷5.5 KΩ ±5% a 20°C. If the resistance is not
between the specified values, replace the electronic coil.
NOTE: The ignition coil is fastened under the fuel tank. On an area totally exempt
from oxidization or paint; if the earth contact is not perfect this could cause
damage to the coil and ignition faults as well.
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M.22 Part. N. 8000 B0148 (02-2008)