Unfortunately i don't have the manual and i need
I can help, but you'll need the gauge to set the knives exactly in the same spot on both or all 3. Do you have the tools that came with it? Do you have new knives or are you getting those sharpened? Getting then out is no problem, just take note of how they sit in the cutter head, loosen the jib screws, don't touch the set screws, take out all the knives, clean the jib off and the blow out the cutter head, sharpen the knives or get the new ones ready to go in, put the jib in, lay the knife on it, tighten up each end just snug, take your setting tool and just scrape the top on the knife, do not touch it, move it or stop on it, just shave it slightly, adjust it so it is just right, tap it back in with a piece of wood if you pull it up too far, do the other side the same, then snug up the jib screws, check the depth again, It has to be the same left and right, all knives, otherwise you will get chatter marks and speed bumps in your wood. Once it is set, tighten up all the jib screws, then tighten them again, do the other knives, all the same, do not answer the fone, get them all tight, put on the cutter guard, and plug it back in. You should be all set.