Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Did you locate the fuses and check fuse to be blown? With no click from the fuel solenoid as you flip key on and off, there is no voltage to the keyswitch, and power has to come direct through the fuses.
Husqvarna does not use a circuit breaker, the only timer in the system is related to the starter circuit, so it may be cutting off the power to the start circuit. You would have to jump around it when it won't start , to see if it is defective. You have the owners manual, with schematic on page, 52?
Here is the link to the manual above.
I see question is still open, did you find problem?