I have a Husqvarna Z254 its only 2 years old. The last few times I've used it, it runs more worse every time. Now it lugs with the mower deck running and without a load it spits and sputters and blows black smoke I have changed plugs, air filter, new blades added fuel conditioner and there is soot where the throttle cables and linkage attach to carb. bracket. The only thing I have not changed is the fuel filter because I forgot to buy one. Does anyone out there have any suggestions for me besides the fuel filter?
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