My 96 75hp force engine is still weird at 4750 it goes down and up 200rpms and m

[my new fishmaster]

Strange noises kinda has a clank banging noise but I think this is coming from the steering linkage. Could the stator be arcing over,cdi loosing spark,what do the reths do in under the carb? My engine has only one carb how does each cyl get fuel?