Hi all looking for advice , every time I’m out and it’s wet or I go through streams etc my bike wants to cut out , the only thing that stops it is turn the chime on for a couple of seconds and it’s clear .

my wee fella comes out with me on his sherco and goes through the same stuff his bike is fine 

thoughts anyone ??

Start it in a dark garage & see if there is a spark escaping from a crack in the plug cap etc, once it's the easiest path due to dampness you lose all spark

Other possibility is blocked vent tube which is 1 piece with a notch cut out at the bottom, try removing the tube from 1 vent & see if a known situation still gives the problem

Cracks in your air box, poorly fitted air filter or perished inlet manifold. doubt it's an electrical issue if choke fixes it until the next stream splash.