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i have a 11 year old lt1000 craftsman with a 18.5 twin- maintence has been kept up- this season did fresh plugs, cleaned filters, oil change ,battery etc. last summer had carb cleaned, new float needle and #1 cyl gasket replaced. running great till last cutting- mid way threw using it developed a popping noise like a backfire from exhaust. I let it cool and next day doing the same thing immediatly. I pulled & checked plug gap, pulled air& fuel filters and even went as far as draining tank and refilling with fresh fuel & seafoam. the popping from exhaust is still their and you can feel it at the mufler when it pops- both headers are hot . i let it run a few min to circulate the new gas and drove it around for 5 min hoping it would clear. My property is clean with the ocasional hit of a pinecone. it fires right up, no diseling after shut off, no smoking noticed, oil level is good and looks clean .
Any ideas before i talk to the mower shop- if it turns into a costly job it may endup getting replaced with a newer rider.
Any ideas before i talk to the mower shop- if it turns into a costly job it may endup getting replaced with a newer rider.