Try vise grips or a pipe wrench
One bolt holds the tensioner to the engine, take it off to get the tensioner off and then you can get to the bolt that holds the pulley to the tensioner.
Make sure that mower is off, drain the gas from the system, unplug the spark plug, take off the blade, then replace the blade that you take off.
Use a 9/16" Socket on a ratchet. There is one bolt in the center of the blade. Brace the blade with a block of wood to prevent movement. Loosen the bolt, remove the bolt and washers. Blade should come off easily now. Place your new blade in the spindle cradle and transfer the bolt and washers to it. Tighten with socket/wratchet. It's that easy! Unless, the bolt is stripped, in which case the mower deck will need to go to a machine shop to get the bolt out.
take the bolt out that holds it to the engine and it will come off.
you get the mower and flip it n it's side then you unscrew the bolt. take off the old blade and pt the new one on then you screw the bolt back on.
cam cover is on the left side, the bolt that holds it on is on the right side, loosen up the bolt and tap on the bolt will cause the cover to pop off
It will depend on what kind of mtd mower you got but generally there is a bolt in the center of the blade that you take off and the blade will come right off. It is alot easier to take it off with an impact but if you dont have and impact you will have to put something to hold the blade and break lose that bolt and make sure when you put it together the blades go back on the same way and if the blades have any kind of bracket on it you put those back on the same way as well.
Turn off all power to the circular saw and remove the power cord from the wall outlet. Twist tie or tie off the cord to keep it out of the way while changing the blade,Slide up the protective blade guard to expose the blade. Lay the saw down on a sturdy bench top.,Clamp the circular saw to the bench top using two bench clamps or any clamp that will hold the unit securely to the bench. , Locate the hole in the saw blade itself. This hole will be drilled all the way through the blade and can accommodate a drill bit or another thin piece of metal or wood. Place a drill bit through the hole in the saw blade to secure the blade from moving. Many newer circular saw models come equipped with a blade lock feature that can be employed to stop blade movement .Attach a wrench or socket to the circular saw blade retaining bolt in the center of the blade. This bolt attaches the blade to the saw itself. Remove bolt and set aside. Remove the saw blade and place the new blade in its place. Replace the blade bolt and tigh
You have to remove the barrel. Take the stock off and you will see the nut that holds a "U" clip in place. The clipp holds the barrell. Remove clip, slide barrel out, then the bolt will also slide out.
The big bolt that holds it on must have came out of the crank.
The fore stock should pull directly down from the barrel if you grasp near the front. the butt stock is held in place by a long screw or bolt that can be located by removing the butt plate or recoil pad. Take off the butt plate. Use a long blade, hollow ground flate blade screwdriver to loosen the screw that holds the stock to the receiver. Be careful to not slip and crack the wood.
THE BOLT MAY HAVE LEFT HANDED THREADS...HAVE YOU TRIED TURNING THE OPPOSITE DIRECTION? The bolt is threaded into the same shaft that the pulley is attached to. Once you get the bolt loose enough that it starts to come off of the shaft you may have to hold the pulley to finish removing it.