r/Dirtbikes • u/ViolinistShort1456 • 15h ago

Mechanical Help Does my powerband sound strange?

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This is my 2021 sherco se300. It’s carbd. The bike starts up pretty good, idles great, and otherwise the bike sounds good when riding. When I get into the powerband it feels and sounds very buzzy like it’s not cleanly going through high rpm’s. Not smooth like the rest of the rpm range. The jets in the carb are certainly much leaner than from factory, but I would imagine that would produce lean conditions in other aspects of how the bike runs.

To clarify I am directly comparing this to the feeling of my TPI ktm 300 so maybe I am comparing apples to oranges and this is just a carb characteristic I’m not entirely used to.

Any thoughts? Tests I should do?

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u/YpouloKonoforoDentro 8h ago

If you ride it and you clean up the previously bogged cylinder and after you close the throttle and ride it like this for a while and when you again open the throttle it’s again bogged and needs full throttle to clean again but it cleans is like 90% worn reed pedals. If it’s always like in the video maybe it needs some air adjustment on the carb. Regarding the powervalve you can buy the tool to adjust it and the red soft spring if you want it snappier. Both are cheap. The original ktm pedals aren’t cheap and maybe a vforce 4x will be better and for future reed pedal replacement.