Brunswick Community

Disconnect the ground wire on the single battery and try and start your engine. If it starts then the parallel set is for starting.

I have a SLX350. Lost my bow cover in a mid nigh wind storm. My dealer does not stock these but will order it for you from Great Lakes

I have a 2016 SLX350 with the identical problem. Dealer has disassembled the venting system and all parts checked ok. I observed while this was done. The vent is external, not thru the filler pipe. I conclude this is a design problem in the fuel tank...