Hi all,

I've got a Dixon Ram ZTR ride on with a Honda GXV620 engine, bought second hand a couple of years ago. It now has about 140 hrs on it. It mows well but the engine surges after its all warm and the cutting deck is disengaged. It's used in fairly rough areas and I've noticed two black tubes hanging below the engine as in the attached photos.

Can anyone tell me what the tubes are and if they need to be connected to anything and does this have anything to do with the surging or is there another problem??

Cheers, Steve O Mac

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