This may help show the location. If what you see is an aluminum bolt going through a brass circle then you have the banjos and nozzles.
I would highly suggest getting a genuine copy of a Kawasaki shop manual for your sled. Re-establishing oil injection should involve a complete disassembly of the tank, pump, banjos and nozzles for cleaning and inspection. Re-assembling according to the manual with new hoses and clamps and filter. Then adjusting the cable to function properly with the throttle. It's not a big chore but one that will keep the engine lubricated far better than pre-mix.