Hello I am a new member,

I have a Huqvarna LGT2654 that won't start. It backfired once while cutting and went dead. It cranks but does not even try to start. It has a good battery, it is getting fuel to the carb. It won't even try to start with cleaning fluid srayed into the carb. There is no spark getting to plugs. I thought it might be a safety switch. I cleaned those, the one under the seat was really dirty. I am looking for ways to either temporaraly defeat the safety switches to see if they are the issue, or look for other things to trouble shoot. I have 5 acres to cut any help would be appreciated.