this video will show you how to replace the blades on this troy bilt riding mower depending on your model the instructions in this video may vary slightly always be sure to check your operators manual for detailed instructions turn the mower off and make sure the engine is cool remove the ignition key disconnect the spark plug ignition wire engage the parking brake be sure the PTO lover is disengaged put the deck height lever in its highest position place a wood block under the decks edge for support then lower the deck to the wood block remove the belt keeper from around the engine pulley by removing the self-tapping screw remove the belt from the engine pulley remove the bowtie clip from the left rear side of the mower deck and carefully remove the hanger rod repeat steps on right side of the mower deck remove the bowtie clip on the deck stabilizer rod and slide the deck lift rod from the mounting bracket remove the woodblock remove the bowtie clip to release the PTO cable from the bracket and then release the tension spring from the idler arm slide the deck out from under the mower turn the deck over to expose the blades wearing gloves for protection use the arnold blade removal tool to secure the blade remove the bolt that secures the blade to the spindle and remove the blade assemble the new blades on the engine spindle and tighten the bolts to the proper torque as indicated in your operator's manual remove the arnold blade removal tool slide the deck back under the mower attach the tension spring to the idler arm and insert PTO cable into the bracket insert bowtie clip slide the deck lift rod into the mounting bracket and insert the bowtie clip into the stabilizer rod attach the hanger rod and insert bowtie clip on the left side and right side of the mower route the belts onto the engine pulley attach the belt keeper around the engine pulley by inserting the self-tapping screws and connect the spark plug ignition wire you