[img]i/expressions/face-icon-small-frown.gif[/img] My Grizzly has started to pop and back fire at low revs so that it keeps cutting out any one have some idea what to check up on all ideas appreciated.

Thanks in advance Nobby

 

Welcome,

Backfire usuallly means lean. Try jetting out on your low speed screws. Did you try the yamaha forum? They might have a specific problem area and could direct you in the right direction.

 

Thanks for the information I will try them both

Nobby