Spark Plug Maintenance

Spark Plug Maintenance

Regular maintenance keeps your John Deere equipment running quietly and efficiently. If your John Deere lawn mower, snow blower, or other outdoor power equipment won’t start, a damaged spark plug may be the problem. Worn or dirty spark plugs cause issues for your machine, so be on the lookout for these as well.

As a rule of thumb, you should check and/or replace the spark plug on your small engine machine every year. Also check the spark plug every season or every 25 hours of use to determine whether it should be replaced. If your John Deere equipment won’t start, check and/or replace your spark plug.

To check for a damaged spark plug:

  • Turn your John Deere machine off and allow the engine to cool to the touch. Disconnect the spark plug wire to prevent accidental starting.
  • Blow or clean off the area around the plug with compressed air or a brush, making sure the area is clean. This will prevent debris from getting in the combustion chamber when removing the spark plug.
  • Remove the spark plug with a spark plug socket and clean any deposits from the plug.
  • Use a wire brush or spray-on plug cleaner to remove the deposits, or a sturdy knife to scrape off tougher deposits.
  • Check the spark plug for cracked porcelain, electrodes that have been burned away, or stubborn deposits. If you find any of these issues, change the spark plug.
  • Check the spark plug gap and adjust if necessary. Many manufacturers package new spark plugs with the cap pre-set, but it is still a good idea to double-check the gap and torque according to your John Deere owner’s manual.
  • If the spark plug is in good shape, re-attach. Make sure you don’t over-tighten the plug when replacing it.
  • Reconnect the spark plug wire and start your machine’s engine.

To replace spark plugs:

  • Disconnect the spark plug wire and clean the area around the spark plug.
  • Use a spark plug socket to remove the spark plug.
  • Check the gap on the new spark plug and replace it.
  • Tighten the spark plug but don’t over-tighten it.
  • Reconnect the spark plug wire.

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How to Tune Up Your John Deere Lawn Mower

How to Tune Up Your John Deere Lawn Mower

Excited to start up your John Deere lawn mower but want to make sure it’s in peak condition before taking on your yard? We’re here to get you started! Use our checklist below to tune up your John Deere Lawn Mower and make sure it performs exceptionally all season long.

1. Tune Up Your John Deere Lawn Mower: Drain Old Fuel and Change the Oil

Typically, fuel should be drained from your John Deere lawn mower before putting it into winter storage each year, but if there is any leftover fuel from last season left in the tank, make sure you drain it now. Because old fuel can separate into deposits and clog the carburetor, it is possible that you will discover some damage as you inspect your mower (if you find that any parts have been damaged, you can search for replacement parts here). Next, change the oil to help ensure engine longevity and better performance.

2. Tune Up Your John Deere Lawn Mower: Clean or Replace the Air Filter

Depending on what type of air filter you have, you can boost performance by cleaning or replacing the filter. Foam filters can be washed with hot water and dish soap, while paper filters should be replaced once they are no longer usable. To determine if your paper filter is in working condition, remove it from your mower, tap off excess dust, and hold it up to a bright light. If the light shines through the filter, it is clean enough to put back on your mower. If you cannot see any light, the filter is dirty and should be replaced.

3.  Tune Up Your John Deere Lawn Mower: Change the Spark Plug

Ideally, spark plugs should be replaced each year or after 100 hours of use, whichever comes first. Although spark plugs rarely go bad, they are good indicators of underlying engine problems and as a result should always be taken care of. Use a crescent wrench or pair of vise grips to turn the metal base and remove the spark plug, then place a few drops of oil into the open cylinder. Start the engine a few times to coat inside valves, then replace your old spark plug with a new one. Remember to use the same part number, as there are many types of spark plugs available as you work with different equipment (click here to find spark plugs).

4. Tune Up Your John Deere Lawn Mower: Sharpen Blades

Sharp blades can make a huge difference in cut quality. Check blades for excessive dents, chips, or wearing that could have an impact on mowing performance, and sharpen or replace depending on severity of damage.

5. Tune Up Your John Deere Lawn Mower: Double-Check Bolts, Wheels, Cables, and Belts

Finally, inspect your John Deere for any loose bolts, worn cables or belts, or damaged wheels. Tighten, repair, and replace as needed to help avoid future problems that could pop up later in the mowing season (click here to find parts by illustrated diagram).

Paying attention to these important tips can help you stay on top of your John Deere lawn mower maintenance and enhance the quality of your lawn all season. For questions about replacement parts, you can contact us here. Best of luck, and let the mowing begin!

About Green-Parts-Direct

Green-Parts-Direct.com stocks a wide inventory of parts for John Deere power equipment. Our comprehensive parts selection allows us to provide quick response times and help you confidently find the parts you need.

Free Parts Search - Tips to Store Small Engine Equipment for Winter   Shop Now - Tips to Store Small Engine Equipment for Winter

How to Use John Deere Maintenance Kits

How to Use John Deere Maintenance Kits

Staying on top of maintenance is essential to maximizing the performance and life of your outdoor power equipment. John Deere makes it easy to tune-up your tractor all on your own. They also make it easy to match a kit to your specific tractor model by listing the model on the box so you’ll never have to worry about missing parts necessary for maintenance.

Most John Deere Maintenance Kits include:

2 quarts oil

1 oil filter

1 air filter

1 fuel filter

Air precleaner

Spark plugs(s)

Additional tools (not included in Maintenance Kits):

Oil filter wrench

Drain pan

Towels/rags

Pliers

Socket wrench

Spark plug gap gauge

 

Here’s how to perform maintenance on your John Deere tractor using a John Deere Maintenance Kit.

Change the oil and oil filter

Drain the old oil by running your tractor’s engine for a couple minutes so that the oil flows better. Set your drain pan on the ground to catch the old oil. Remove the drain cap and allow the oil to drain completely. Once the oil has been drained, remove the dipstick and use a towel/rag to wipe off old oil.

Before replacing the oil filter, use your towel or rag to clean the area around the filter and then place the drain pan under the filter tray. Remove the old filter and gasket and make sure to dispose of it properly. Rub a light coat of fresh oil on the new filter gasket and screw on the new filter by hand, until the rubber gasket makes contact with the filter base. Then tighten the filter another half turn to make sure it’s secure.

Next, install the drain cap and pour in the new oil, but make sure not to fill it past the full mark. Run the engine again to make sure you don’t have any leaks, and ensure proper fill by checking the dipstick.

Change the air filter

Before replacing the air filter, make sure the engine is cool. You should also brush away any debris covering the air intake screen. Take off the air filter cover then remove the air filter and the precleaner. If your maintenance kit comes with a replacement precleaner, use the new one (to make sure, check your operator’s manual). Put in the new air filter and reinstall the cover.

Change the fuel filter

First, make sure you are in a well-ventilated area and that the engine on your tractor is cool. Check the fuel lines to see if they look worn or cracked. If so, have them replaced. Look at the arrow on the old fuel filter – it shows the gas flow. Make sure the arrow on the new filter goes the same direction as the arrow on the old filter.

Use your pliers to move the clamps away from the filter. Pull off the hoses, gas tank side first, and quickly attach the hoses to the new filter, gas tank side first. Use the pliers again to put the hose clamps back in their original place. Run the engine for a couple minutes and check for leaks.

Change the spark plugs

Pull off the plug wires and use the wrench to loosen the plugs. Remove the plugs and use the spark plug gauge to set the right gap (your operator’s manual will show you the proper gap size). Install the new spark plugs finger tight and then use the wrench to fully tighten the spark plugs. Lastly, reinstall the plug wires.

Sharpen/Replace Blades

Blades are not included in John Deere Maintenance Kits but whenever you perform regular maintenance you should sharpen your blades or replace them if they’re worn. You can sharpen your blades on your own or bring them to a professional.

John Deere Maintenance Kits will keep your equipment running like new year after year. They come with everything you need to service you lawn equipment so stay on top of maintenance to see the best results with your equipment and your lawn.

About Green-Parts-Direct

Green-Parts-Direct.com stocks a wide inventory of parts for John Deere power equipment. Our comprehensive parts selection allows us to provide quick response times and help you confidently find the parts you need.

How to Use John Deere Maintenance Kits - Free Parts Search  How to Use John Deere Maintenance Kits - Shop Now

John Deere Spark Plug Maintenance

For smooth and efficient running, your John Deere’s spark plug must be maintained.  To complete the following steps you will need a wrench with spark plug socket and feeler gauge.

  • make sure engine is cool and key is removed
  • remove spark plug wire
  • use spark plug socket to remove spark plug
  • discard foul plug and install a new one (if dirty, cracked, and/or broken)
  • use operator’s manual to adjust new plug gap
  • tighten the spark plug in place and reattach the spark plug wire