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2019 Yamaha EFI QuietTech .....sluggish
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02-24-2020, 07:50 AM
R&CSmith
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Join Date: Oct 2017
Location: Pine Hills
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Same thing happened to me, your Yamaha muffler points straight down so they installed a spark arrestor screen which carbons up. Service cleaned it for us , but in the process cracked the muffler, replaced under warranty
R&CSmith
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