Usually a short length of 2x4 can be used to wedge and hold the blade to loosen the bolt.
depending on model u need to loosen the belt there should be a bolt in the blade were it attatches on to the pulley shaft loosen the bolt take off the lock then the blade when u reinstall dont reverse blade and make sure bolts are tight or youll get vibration and put the brass bearing sleaves in disrepair you dont need to remove the deck
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.
Lift the blade guard, sandwich the blade with two 3/4" blocks of wood and insert sandwiched blade in a bench vise (if not available, use a "c" clamp). Tighten vise (or "c" clamp), remove arbor bolt.
loosen the bolt in the center of the drive belt pulley, then loosen the bolt on the side of the pulley. as you loosen the side bolt the tension lets up
They usually have a pin or locking knob, you either push it in or hold it in while you loosen the blade retaining nut, some you might have to remove the shield or guard, older saws might not have this feature at all, place a piece of wood on the bed of the saw and hold down so the blade digs into the wood and loosen the nut.
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.
Loosen bolt in tension pulley, then loosen tension bolt. Replace belt. Tighten tension bolt. Last, tighten bolt through pulley.
To loosen the bolt, turn it in a counter clock-wise way. Will probably have to use a screw driver to prevent the blade from turning.
To get the lightning bolt blade, you have to get 10000 starfruit.Since its a elite blade you have to use starfruit to unlock it.
you use a key ring
Loosen lock nut, turn tension bolt.