You are going to want jets for that carburetor
POSEAGLE 10 pcs Carburetor Main Jet Kit ( 70 72 75 78 80 82 85 88 90 100 ) for Predator 212cc Mini Bike Go Kart Honda GX160 GX200 GX390 Engines
https://a.co/d/gNI8hI6 these should fit it looks like a standard NT carb