Any ideas re" GN400X carbs?

Curious.....I recently bought a GN400X from a guy who had it in covered storage for about 13 years. The carb on it is a Mikuni BS36SS that is no longer made and thus parts are hard to get or expensive and the carb is NOT user-friendly. Any ideas what carb I can use in its place and what the jetting might be? Thanks!!! WilleyG82

I betcha I can help you out if you could post up a picture I may be able to match it with a decent alternative.

Thanks but I'm not sure what you need a pic of........? the carb or the whole bike? It's a "400cc thumper" circa 1981.
(same engine as the DR400 motocross bike).
Thanks for the offer!.....WilleyG

Thanks but I'm not sure what you need a pic of........? the carb or the whole bike? It's a "400cc thumper" circa 1981.
(same engine as the DR400 motocross bike).
Thanks for the offer!.....WilleyG


Well the carb would help for sure, and if its the same as the DR400 then I know I can get ya a carb that will work:D

hi i have the same bike and the same problem, i got my bike started but the throttle positiong mechanism on the carb is ruined so i cant position the throttle and even after cleaning my jets and carb it wont idle. i was wondering if i could use a more modern carb for it or atleast a better carb.