How to Change the Blades on a Cub Cadet Ultima

How to Change the Blades on a Cub Cadet Ultima

Over time, the blades on your Cub Cadet Ultima zero turn rider can become worn out or dinged. The gradual damage of the mower blades can reduce the effectiveness of your mower. Check the blades on your mower at least twice a year, at the beginning and middle of the mowing season. Check the blades more often if you mow more frequently. Here’s how to change the blades on a Cub Cadet Ultima.

Before performing any maintenance on your Cub Cadet Ultima, refer to your operator’s manual. It lists required maintenance, safety information, and instructions for your machine. Maintenance instructions vary by model, so depending on your model our instructions may vary slightly.

Begin by parking your zero turn on a flat, level surface. Turn the engine off and allow it to cool, remove the ignition key, disconnect the spark plug ignition wire to prevent accidental starting, and engage the parking brake.

Set the deck height on your Ultima to the lowest setting. Use a 3/8-inch socket or wrench to remove both belt covers from the deck.

Remove the access panel. Use the panel access tool included on Cub Cadet Ultima mowers to remove the bolt from the panel.

Remove the belt from the spindle pulleys. Use a 9/16-inch socket or wrench to pull the idler pulley arm back to release the belt tension.

Remove the belt from the idler pulleys and PTO clutch. Use both a 9/16-inch socket and wrench to loosen the idler pulley bolts.

Remove the cotter pins and deck pins from the deck. Slide the deck out from under your Cub Cadet mower. Flip the deck over to access the blades. Wear gloves for protection when working with blades.

Remove the blades. Use a block of wood and wedge it between the blade and the frame of your machine to stop the blades from rotating. Use a 15/16-inch socket or wrench to loosen the blade nuts.

Replace the blades on your Ultima and tighten the nuts. Make sure the word “bottom” or the blade part number is facing the ground when installing the blades.

Flip the deck over and slide the deck back into place under the mower. Reattach the deck and slide the deck pins back into place. Reconnect the cotter pins.

Reinstall the belt. Route the belt around the PTO clutch. Route the belt through the idler pulleys.

Use both a 9/16-inch socket and wrench to tighten both idler pulley bolts. Route the belt around the spindle pulleys. Use a 9/16-inch socket or wrench to release the tension and finish routing the belt.

Reinstall both belt covers and then reinstall the access panel and bolt. Reconnect the spark plug wires and start your Cub Cadet mower.

Use our illustrated parts diagrams to locate any replacement parts you may need for your Cub Cadet Ultima zero turn rider.

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How to Change the Oil on a Cub Cadet Ultima

How to Change the Oil on a Cub Cadet Ultima

Regular oil changes are essential to keeping your Cub Cadet Ultima’s engine in working condition. Regular oil changes also maximize the lifespan of your mower and keep your Cub Cadet running smoothly and efficiently.

Before performing any maintenance on your Cub Cadet Ultima, refer to your owner’s manual for recommended maintenance and safety information. Maintenance instructions vary by model, so depending on your model our instructions may vary slightly. Check your owner’s manual to get instructions specific to your model, including information about the recommended oil type.

To change the oil on your Cub Cadet Ultima, begin by parking your mower on a flat, level surface. Turn the engine off and allow it to cool, remove the ignition key, disconnect the spark plug ignition wire to prevent accidental starting, and engage the parking brake.

It may be helpful to place a piece of cardboard under your mower to catch oil drips. Use an oil basin to catch the old oil when it is drained from the engine. Remove the dip stick and drain the oil. Use a ¾-inch and a ½-inch wrench to unthread the stopper plug from the oil outlet and allow the engine oil to completely drain. After the oil has drained, secure the stopper plug to the oil outlet.

Replace the oil filter with a new one. Use an oil filter wrench to unthread the oil filter from the engine. Use a rag to clean the area around the engine of any spilled oil.

Replace the oil filter and add a little oil to the seal of the new oil filter to help with the install. Use your hand to thread the new oil filter onto the engine. Do not overtighten. Use your oil filter wrench to snug the fit but do not overtighten.

Add new oil to your Cub Cadet Ultima. Use the oil recommended by the engine manufacturer and fill to the recommended levels. Replace the dip stick and check the engine oil levels.

Check the oil level with the dip stick. Depending on where it reads, you may need to add more oil. When checking the oil with the dip stick, place the dip stick into the oil and push it all the way down. Remove the dip stick, clean it with your rag, and place it in the oil one more time to check the oil level.

Reconnect the spark plug wire on your Cub Cadet Ultima.

Use our illustrated parts diagrams to locate any replacement parts you may need for maintenance on your Cub Cadet Ultima.

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