husqvarna · Workshop manual
Neither of the machine's lamps (lights) are working. This suggests a common issue affecting both lights, such as a disabled switch, a blown fuse, low battery voltage, or a wiring problem common to both lamps.
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Make sure the switch for the lamps is activated.
Check and replace the 5A 'Fuse Light' if it is blown.
Measure the voltage on J2 (pin 3) with the key in the 'ON' position; it should match battery voltage. Charge the battery if low.
Inspect the orange and blue cables and connectors from J2 to the switch for the lamps for any damage.
Check the cabling as indicated in steps 10 and 11 (referring to wiring checks for the PTO button and starter relay circuit). Repair or replace as needed.