Troy-bilt 17.5 briggs & stratton motor is smoking.Oil level is correct
Smoke is slightly dark and engine hesitates.
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rufusfwoodalljr, depending on exactly which B&S engine this is. It could very well be an issue with the carb of having to rich of a mixture. Change the gas with some fresh gas, clean your air filter and change your plugs and try to adjust the idle mix screw. If you can give us the serial and model number of your engine, we might be able to give you a more concrete answer. Hope this helps, good luck.
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