To Install a Toilet 
If you're reusing the  old flange, it's a good idea to replace the flange bolts. Purchase two 3  1/2-inch-long closet bolts at your local home center. If you're replacing the  flange, it must be screwed into a wooden floor. Self-tapping concrete screws  are used for concrete. 
                                                                    Set the toilet bowl.  Straddle the toilet bowl and lift, using your legs and not your back. Toilets  are heavy, so get some help. Set the toilet over the anchor bolts and sit on  the toilet, rocking it back and forth to seat the wax ring.  
                                 Tighten the nuts.  Draw the nuts down over both anchor bolts until they are hand-tight. Shim as  necessary to maintain level. Use an adjustable wrench and—moving from one side  of the toilet to the other-alternate the tightening of each nut a half-turn at  a time until it's snug. Don't over tighten. You should still cut through so you  don't bend the bolt.   |