Does anyone know the procedure to replace the spark plugs on a 2016 ZForce 800 ?
Procedure? Like take out the old ones and put in the new ones?

Seriously though, do clean out around the old plugs with air before removing them so trash and dirt doesn't fall into the cylinder. Check the gap on the new ones, install with the correct torque to seal the fire ring(if they still use them). Install the plug wire. That's it. On EFI systems the plugs usually last a very long time..like thousands of miles..unless something is wrong like using oil, running too lean & hot...rich..ect.