In order to remove blade pulley on Dewalt DCMW220P2 Lawn Mower, follow the below steps: 1. Turn the ignition switch off and the key needs to be removed. 2. Disconnect the spark plug wire and now the mower deck is to be lowered 3. Just disengage the cutting blades and roll the blade belt off the pulley 4. Detach the support from the mower deck and remove the suspension arm and rear deck bracket on both sides. 5. Now, pull the blade cable out of the bracket by releasing the locking tabs. 6. Pull out the wood block 7. Flip the deck and put wood block back 8. Finally, take out the blade mounting bolt and remove the cutting blade.