Re: 94 900RR plug gap?????
The service manual states: 0.8mm-0.9mm (0.031-0.035 in).
I use Iridium plugs in my bike. I think the plug gap is 0.8mm, so they drop right in. As Fastrr mentioned, do not attempt to regap an Iridium plug. NKG state that even if the plug gap of the Iridium plug is different to what you require, that you should leave it as is. They say it will still perform better this way compared to a standard plug.
The standard plug is an NGK CR9EH-9 or Nippon Denso U27FER-9