400 slingshot Jk76a carb problem

Peter martin

New member
Oct 14, 2018
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Can anyone give me some advice.
I've removed the airbox on my 400 slingshot 1990 model.
The problem is it seems that the diaphragms in the carbs seem to open via pressure instead of vacuum. There lies my problem . how to generate the pressure to the
Diaphram's with individual cone filters. I know I can put the airbox back on and back to standard but I'm trying to tune her up a bit so that's not an option. Any one have the solution.

Regards Pete.