Husqvarna TC449 Workshop Manual page 324

ELECTRICAL SYSTEM
A: Set the meter to the "Impedance" scale and check the energiser coil for
proper operation. Reading should be: 80 Ohm (+/- 10%) at 20 °C.
B: Set the meter to "Continuity" mode and check the circuit is open.
C: Feed the coil from a power supply unit with stable 12V output and make
sure that the circuit closes.
M.44 1 edition (08-2010)_Rev. 11-2010
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