if you just replaced the blade and everything was working fine before,, then all you need to do is tighten the tensioner knob. since you don’t have a book,, find the place were a lot of blade is free,, tighten the knob until you have about 1/4 play,, look on and behind the saw and see if you don’t have a dial indicator!! this tells you the different settings for different baldes!!! try wood magazine.com and look in the section for cleaning and maintaining tools,, also Delta tools has a good section and a great CD that shows how to maintain all their tools.. If you like I could try and copy it and send it to you,,email me,,