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I have a Husqvarna 5424Z with a Briggs model 44S877-0014G1 that is only 3 years old. For the past 3 months I have been dealing with hard starts and surging/backfiring/dying. I have to spray starting fluid to get it started and once I have it running I can usually run the blade engaged for...

Husqvarna - RZ5424 with 24 hp Briggs and Straton Endurance engine. Symptom - mower will operate fine for about 15 minutes where it will gradually begin to surge. Tall grass will cause the issue to happen much sooner. Engine will surge to the point of backfiring and eventually die. If I let...