How to Change a Cub Cadet Walk Behind Lawn Mower Blade

How to Change a Cub Cadet Walk Behind Lawn Mower Blade

Sharpening or changing your lawn mower blade is imperative to a well-manicured lawn. A lawn mower with a dull blade will cut the grass unevenly and the tips of grass blades will be torn instead of cleanly-sliced. Periodically inspect your lawn and lawn mower to determine if a new blade is needed. As a rule of thumb, sharpen or replace your lawn mower blade at least once a year. Refer to this guide when it’s time to change your .

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

Before changing the wheels on your lawn mower, please abide by these safety precautions:

  • Shut off the engine
  • Allow the engine to become cool to the touch
  • Disconnect the spark plug wire to prevent accidental starting

First, turn the mower on its side to access the blade. Make sure the air filter and carburetor side is facing up. Mower blades are sharp so make sure you always wear gloves for protection. Secure the lawn mower blade using a blade removal tool or place a block of wood between the blade and the frame of the mower to support the blade when you apply pressure to remove it.

Remove the blade retaining bolt and then remove the blade. Depending on wear and tear, either sharpen the blade or replace it with a new one. Secure the new or sharpened blade with the blade removal tool or block of wood. Then tighten the blade retaining bolt to the torque indicated in your owner’s manual.

The side of the blade that says “Bottom,” or shows the part number should face the ground when the mower is in operating position. Once the blade is secured on your lawn mower, turn the lawn mower right side up and reconnect the spark plug. Start your lawn mower and listen for noises or vibration.

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High-Lift Blades and Mulching Blades

High Lift Blades and Mulching Blades

The most important function of your lawn mower is to cut your grass and the biggest factor in achieving a quality cut is your lawn mower blade. While all blades cut the grass, not all lawn mower blades are created equal. Different types of lawn mower blades function differently, and there are two styles of blades you should be aware of – high-lift blades and mulching blades.

High-lift blades

High-lift blades are also referred to as 2-in-1 blades. These blades aid in assist in cutting grass and discharging the grass clippings out from the deck to fall back onto your lawn. High-lift blades are designed to create higher-lifting airflow. These blades can be identified by a drastic upward angle on the back end of the blade, which helps to propel the clippings through the discharge chute to the back of the bag, reducing clogging.

Mulching blades

Mulching blades are also referred to as 3-in-1 blades. They cut the grass into extremely small particles, eliminating the need to frequently unload heavy bags or pick up clumps of grass clippings. This method of cutting has a positive effect on the health of your lawn. The mulching blades chop grass clippings into small particles that can become a natural fertilizer. That fertilizer replenishes the soil with nutrients that your grass has absorbed over the season.

Mulching blades are designed with a more curved style surface. They frequently include extra cutting surfaces along the blade edges and may also come in a “+” design. The “+” design is two individual blades arranged in a perpendicular manner to enhance mulching.  Usually older style mowers utilize this blade design.

Mulching blades are used with mulch kits. Mulch kits generally consist of mulching blades, a mulching plug which closes off the discharge opening to keep grass clippings contained under the deck for re-cutting, and any necessary hardware for installation.

There is a different lawn mower blade for different situations and each one serves a very specific purpose. There isn’t one lawn mower blade that can do it all as effectively as the lawn mower blade specifically designed for the method you wish to use.

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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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