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 Riding Lawn Mower

How to Change the Oil on a Cub Cadet Riding Lawn Mower

Regular oil changes are essential to keeping your mower’s engine in working condition and will maximize its lifespan. To keep your Cub Cadet running smoothly and efficiently, follow these steps to change the oil in your machine.

Before performing any maintenance on your , refer to your owner’s manual for recommended maintenance and safety information. Maintenance instructions vary by model, so depending on your riding lawn mower 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.

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.

Place a piece of cardboard under your mower to catch oil drips and use an oil basin to catch the old oil when it is drained from the engine.

Remove the dip stick from the oil fill tube and drain the oil and allow the engine oil to completely drain. If your Cub Cadet has an oil filter, replace it 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 riding lawn mower. 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 and your maintenance is done.

Use our illustrated parts diagrams to locate any replacement parts you may need for maintenance.

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How to Change the Air Filter on a Cub Cadet Riding Lawn Mower

How to Change the Air Filter on a Cub Cadet Riding Lawn Mower

To ensure that your engine runs smoothly this season and the next, regularly clean or replace the air filter on your Cub Cadet riding lawn mower. It’s recommended that your air filter be cleaned or replaced every 50 hours of use. In dry, dusty conditions this should be done more frequently.

Before performing any maintenance on your Cub Cadet riding lawn mower, refer to your owner’s manual for recommended maintenance and safety information. Maintenance instructions vary by model, so depending on your riding lawn mower model our instructions may vary slightly. Check your owner’s manual to get instructions specific to your model.

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.

Use a rag to clean the engine of dirt and debris. Remove the air filter cover and the air filter.

Check and clean the air filter. Remove the foam pre filter. Use a flashlight to check for any damage to the air filter. Clean the paper element filter by tapping gently to remove dust. If the element is very dirty or damaged, replace it with a new one.

Wash the foam pre filter. Use mild detergent and warm water to wash the foam pre filter and allow it to dry completely. Keep in mind – never use gasoline or low flash-point solvents for cleaning the air filter elements.

Place the dry pre filter back onto the air filter and reinstall the air filter. Secure the air filter cover and lock handles.

Reconnect the spark plug ignition wires on your Cub Cadet riding lawn mower.

Use our illustrated parts diagrams to locate any replacement parts you may need for maintenance.

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How to Install a Mulch Kit on a Cub Cadet Tractor

How to Install a Mulch Kit on a Cub Cadet Tractor

A mulch kit is a way to convert your Cub Cadet tractor into a mulcher. When you change the tractor’s standard blades to mulching blades, the mulch kit recycles the lawn clippings as you mow and spreads them back onto your lawn. This returns nutrients back into the soil, keeping your grass healthy. Here’s how to install a mulch kit on your Cub Cadet tractor.

Depending on your model number, these instructions may vary.  Be sure to refer to your owner’s manual for detailed instructions, recommended maintenance and safety instructions.

Before performing any maintenance on your machine, engage the parking brake on a flat, level surface and remove the key from the ignition. Disconnect the spark plug wire to prevent accidental starting.

To install a mulch kit on a Cub Cadet tractor, begin by removing the mower deck. Set the deck height to its lowest setting. Pull the right idler pulley to release tension on the deck belt, and then ease the deck belt off the engine pulley.

Use pliers to remove the cotter pin from the front deck lift rod and slide the rod out of the hanger bracket. Remove the hairpin clip securing the right side of the deck to the hanger bracket supporting the cutting deck and release it from the hanger bracket by moving the deck outward and off the hanger rod making sure the deck doesn’t fall. Repeat this step on the left side and slide the deck out from underneath the tractor.

Once the mower deck is off, flip it over to access its underside to prepare to remove the old mower blades. Note: always wear heavy duty gloves when handling blades.

Use a block of wood and wedge it between the blade and the frame of the mower deck. Make sure it’s good and steady because you’ll be applying force. Remove the center holding nut from the mower blade with a wrench. Use a gloved hand to keep the blade from turning while removing the nut. Save the nut for installing the mulching blade. Repeat this blade removal step for the mower blade on the other side of the deck.

Once the old blades are removed, you can replace them with the new blades included in the mulch kit. Place the center hole of the mulching blade over the mounting stud on the underside of the mower deck. Make sure each blade with the side marked “bottom” or with the part number on it is facing the ground when the mower is in the operating position.

Use your gloved hand to hold the blade in place while tightening the holding nut with your wrench. Repeat this step to install the mulching blade on the other side of the deck as well.

To install the mulch plug on your Cub Cadet tractor, lift the discharge chute up. Place the mulch plug into the deck discharge chute by fitting the bolt on the rear side of the mulch plug into the hole in the deck.  Move the mulch plug into place, then pull and stretch the retaining plug on the mulch plug over the deck wheel bracket and hook it under the bottom of the bracket.

Slide the deck back under the tractor and reattach the deck. You are now ready to use your Cub Cadet tractor as a mulcher.

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How to Change the Deck Belt on a Cub Cadet Riding Lawn Mower

How to Change the Deck Belt on a Cub Cadet Riding Lawn Mower

Staying on top of maintenance and repairs will extend the life of your Cub Cadet riding lawn mower and keep it operating like new. Small repairs, like changing the deck belt on your lawn mower, are imperative and aid in your mower’s ability to cut grass efficiently. Here’s how to change the deck belt on a Cub Cadet riding lawn mower.

Before performing any maintenance on your Cub Cadet lawn mower, 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 riding lawn mower model our instructions may vary slightly.

First, position your lawn mower for deck belt replacement by parking the mower on a flat, level surface. Turn off the engine, remove the ignition key, and disconnect the spark plug ignition wire to prevent accidental starting.

Raise the deck height to the highest position and place wooden blocks under each side of the mower deck. Lower the deck height to the lowest position, lowering the mower deck onto the blocks. Pull the J hooks from the left and right side to release the deck from the hangar brackets. Remove the wooden blocks from under the deck and pull the click pin out of the front deck hanger rod.

Remove the belt keeper rod and the deck belt from around the mower’s engine pulley. Raise the deck height to the highest position, this time turning the front wheels to the left. Slide the mower deck out from under the machine.

Remove the belt cover from the outer pulleys and unlock the idler spring. Remove the nut and bolt that secure the deck’s idler pulley with the belt keeper. Use a 3/8 drive ratchet in the square hole of the right idler bracket and separate the idler pulleys. Then remove the left pulley.

Replace the old mower deck belt with a new Cub Cadet deck belt.

Reassemble the mower deck. Attach the nut and bolt that secure the deck’s idler pulley with the belt keeper. Re-hook the idler spring and put the belt covers back on the outer pulleys. Slide the cutting deck back under the mower.

Route the deck belt around the engine pulley and secure the belt keeper rod. Insert the click pin into the front deck hanger rod and the J hooks into the hanger brackets.

Lastly, reconnect the spark plug ignition wire and start the mower.

The deck belt on your Cub Cadet riding lawn mower connects the crank shaft to the mower blades, which causes them to turn. Replace your mower belt if you notice cracks forming in the rubber. Replacing the mower belt before it breaks will help you avoid interruption during mower operation.

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