I have a leaking jet in a pearl jet tub. it's an older model with just two jets installed in 1997 the jet leaks and i don't know how to jet the face plate off the jet, or have a diagram as to get the jet apart. I remove the inspection panel and can see the water leaking around the fitting that goes into the backside of the tub.

One of the quick ways to fix leaks at jets is by using Millaput two putty resins mixed and worked round the outside of the defective jet hope this helps

If there is a  threaded nut on the back of the jet, undo the nut as much as possible and push the jet out into the tub. Spread aquarium grade silicone around the jet and push back into the hole, put more silicone in front of the nut, you may have to spread it in the small area with your finger or if you can squirt it in from the tube of silicone. If there is no  threaded ring on the backside of the jet, go to the jet in the tub and looking down on the jet, turn it to the right. It should pop and pull out of the housing. There will be a retaining ring that may require a special tool to remove it, once the ring is out, clean it very well, spread silicon on the threads and the lip. Reinstall in the hole, reinstall jet wait 24 hours and fill and test for leaks. Take you time and you will not have to do it over again. Check where the leak is coming from, sometimes there is a hairline crack in the jet assembly, if this is the case, make sure the area is dry then use a 2 part epoxy for plastic (from lowes or home depot) and smear this all over and around the crack, let dry 24 hours, fill and test.