How to Change the Spark Plug on Your Cub Cadet Lawn Tractor

How to Change the Spark Plug on Your Cub Cadet Lawn Tractor

The spark plug on your Cub Cadet equipment should be replaced at least once a year of after 100 hours of use. Spark plugs provide an ignition source for your machine’s engine to power your Cub Cadet lawn tractor. When they go bad, mowing your lawn becomes a challenge. Change the spark plug on your Cub Cadet lawn tractor regularly to keep your mower up and running throughout the whole season.

Before performing any maintenance on your Cub Cadet lawn tractor, 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 working on your Cub Cadet mower, follow 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
  • To carry out this task, you’ll need these tools:
  • 5/8 deep well socket
  • Wrench
  • Extension

To change the spark plug on your Cub Cadet lawn tractor:

  • Locate the spark plug on the side of the engine.
  • Use your socket to loosen the spark plug. Loosen it and grab the spark plug on the end, and give it a couple more turns.
  • Install the new spark plug.
  • Replace the old spark plug with a manufacturer approved replacement part (refer to your Cub Cadet owner’s manual).
  • Hold the spark plug on the end and stick it into the proper hole on the tractor.
  • Turn the spark plug to the left to make sure that it is starting to thread in properly, but turn it to the right to tighten it.
  • Tighten the spark plug by hand. By doing this, you can tell if the threads are going in correctly and won’t strip the threads out of the head of the engine. Tighten as much as you can and then put your socket back on the spark plug to tighten it all the way down. Give it an extra snug turn.
  • If you are working with a twin-cylinder engine, repeat the same steps to change the spark plug on the other side of the machine. Once the spark plugs have been changed, reconnect the spark plug wire.

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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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