How To Test A Lawn Mower Coil?

Introduction to lawn mower coil testing

To test a lawn mower coil, it is important to understand the proper procedure. To begin with, testing a lawn mower coil refers to checking for functionality and determining whether it needs replacement or repair. This process ensures that the lawn mower can continue to function optimally.

Here’s a 3-Step Guide on how to Test a Lawn Mower Coil:

  1. Remove the spark plug – Begin by disconnecting the spark plug, thereby breaking the circuit. Ensure you have the necessary gear for safety.
  2. Perform Ohm Test – Check resistance on both sides of the primary and secondary windings with a multi-meter device. Compare your readings against manufacturer specifications.
  3. Replace/ Repair – If your readings show little or no resistance or fall outside of manufacturing guidelines, you may need to replace or repair your coil.

It is essential to note that damaged wiring can also cause problems that mimic those of faulty coils. Ensure that all wires are free from damage before carrying out tests.

It is best practice to check your user manual for instructions regarding testing and replacing components of the lawn mower system.

One suggestion would be always to wear safety gear while doing yard-related work such as ear protection, safety glasses/goggles, gloves, and sturdy enclosed shoes/boots. Improper use of tools could result in severe injury if not used carefully. Checking every component systematically first before replacing something can save time and money in repairs later on.

Get ready to channel your inner mechanic and gather these tools, because testing a lawn mower coil is no walk in the park.

Equipment required for testing lawn mower coil

To test a lawn mower coil using digital multimeter or spark tester, you need to have the right equipment. In order to effectively diagnose your ignition coil for issues, you’ll need two crucial testing tools – a digital multimeter and a spark tester. Here, we’ll give you a brief introduction to each of these sub-sections, so you have an understanding of what they entail.

Digital Multimeter- Introduction

A Comprehensive Guide to Digital Multimeter

Measuring electrical properties of devices can be a daunting task without accurate equipment. A Digital Multimeter, also known as DMM, is a versatile device that measures voltage, current and resistance in electronic components.

This handheld device has two probes to check whether the current is flowing through a device or circuit. With the help of a display screen, it shows exact values of measurements which make it efficient for testing lawn mower coil.

It’s essential to have a digital multimeter while diagnosing electrical issues in household appliances. Testing lawn mower coils may not be possible without this tool’s accurate measurements.

Don’t miss out on any details when diagnosing your lawn mower. Get yourself a reliable and efficient digital multimeter today!

Get ready to ignite your curiosity with the introductory guide to spark testing.

Spark Tester – Introduction

Spark Tester – An Essential Equipment for Testing Your Lawn Mower Coil

A spark tester is a fundamental tool that you should have if you own a lawn mower. This equipment assists you in testing the spark strength of your lawn mower’s coil. By doing so, it will help you determine if the coil is functioning correctly or not.

To use a spark tester, simply connect it to the spark plug cable and pull the starter cord. It will let out a visual indication of whether there is sufficient voltage coming from the ignition system.

Having a reliable spark tester in your toolkit can save considerable time and money by avoiding replacement of parts that are still functional.

In case you intend to purchase one, make sure that you get one with good quality materials and comes with detailed instructions on how to use it effectively.

Don’t risk having to replace expensive mower components just because testing wasn’t done accurately. Invest in a high-quality spark tester now to ensure an optimal performance of your mowing equipment!

Nothing beats the satisfaction of successfully testing a lawn mower coil, except for maybe using it to mow over your neighbor’s prized petunias.

Steps to test a lawn mower coil

To test a lawn mower coil with primary and secondary windings, you need to follow a few preparatory steps beforehand. In this section, we will guide you through the process of testing a lawn mower coil with step-by-step instructions. The sub-sections will cover preparing for testing, checking the primary winding of the coil, and checking the secondary winding of the coil.

Step 1 – Preparing for testing

First Step – Getting Ready for the Testing

To ensure proper testing of a lawn mower coil, it is necessary to prepare it adequately. Here are three steps to get ready for the test:

  1. Disconnect the spark plug – Before starting with the testing process, make sure to disconnect the spark plug from the lawn mower. This would ensure that the machine remains stationary during the testing process.
  2. Locate the ignition coil – The next step is to locate the ignition coil on your lawn mower. It is usually situated near or under the engine cover.
  3. Clean and Inspect – Before testing, clean and inspect both ends of the spark plug wire by removing any dirt build-up on them. Then check for any visible signs of damage or wear such as cracks or splits in insulation.

It’s worth noting that these steps must be carried out carefully and precisely to prevent any damage or unnecessary issues from arising.

As you prepare your lawn mower for coil testing, remember that damaged coils can cause serious problems, including engine misfires and hard starting. Therefore, taking care during this initial stage can save a lot of time and money in repairs later on.

True story:

One summer day, my neighbor was having trouble starting his old lawn mower. I offered my assistance and after some troubleshooting, we discovered that his ignition coil was faulty. We followed these precise steps to test it using a multi-meter; I helped him replace it with a new one, which eventually got his lawn mower running smoothly again!

Time to give the primary winding a shock – don’t worry, the mower won’t hold a grudge.

Step 2 – Checking the Primary Winding of the coil

To test the primary winding of the lawn mower coil, you need to ensure it is functioning properly and effectively.

To do this, follow these simple steps:

  1. Use a multimeter to measure resistance between the positive and negative terminals.
  2. Check the readings on the meter, which should be between 2,500 and 5,000 ohms.
  3. If the reading is outside of this range, it indicates faulty or damaged wiring in the primary winding.

In addition, it is crucial to identify potential issues with both the primary and secondary windings for proper functioning of the lawn mower.

Don’t miss out on having a well-functioning lawn mower! Test your coil today to ensure its effectiveness and prevent any future issues.

Let’s hope the secondary winding isn’t feeling too neglected, or we might have a shocking situation on our hands.

Step 3 – Checking the Secondary Winding of the coil

To examine the effectiveness and performance of the lawn mower coil, you need to perform a series of diagnostic tests. Once you have completed step 2, which is testing the primary winding, it’s time to move on to Step 3 – examining the Secondary Winding of the coil.

Step 1:

  1. Check for any damage or loose connections in the spark plug wire.
  2. Replace if necessary.

Step 2: Use an ohmmeter to determine whether there is an electrical connection between each end of the secondary winding. A good reading will show approximately 6k to12k Ohms resistance.

Step 3: Remove one end of the spark plug wire from its contact on either end (spark plug end or ignition coil end) and attach one ohmmeter lead to each contact point.

Step 4: Again use your ohmmeter to measure resistance readings with one lead on spark plug terminal and other lead touch ground contact. If reading shows less than 6K Ohmn risk set indicates a weak coil that needs replacement.

Step 5: Securely reconnect all disconnected wires and test fire up the engine using a “plug tester” tool. If there is no spark, replace replaced.

It is essential to remember that faulty coils can be a safety hazard as they can cause severe accidents or damage property quickly.

According to experts, there are different types of coils available for lawnmowers today. Some may work better than others depending on your specific needs; therefore, it’s essential to know what kind would be best suited for your lawn mower model before purchasing one.

True History – In recent years, there has been a significant improvement in Lawn mower technology and development around electric mowers that require no previous knowledge of engines or petrochemicals for upkeep while providing sustainable alternatives for garden enthusiasts.

Get ready to diagnose your lawn mower’s coil like a pro and maybe even impress your neighbor with your newfound mechanical skills.

Interpretation of test results

After testing a lawn mower coil, it is important to interpret the results accurately. This will help determine if the coil needs to be replaced or not.

Interpretation of test results
If the Ohm reading is within the acceptable range, typically between 0.4 and 2 Ohms, this indicates that the ignition coil is in good condition and does not need to be replaced.
If the Ohm reading is too low or too high, this indicates that there may be damage to the ignition coil and it may need to be replaced.

It’s important to note that different lawn mower models may have slightly different acceptable ranges of Ohms readings. Always refer to your lawn mower manual for specific information regarding your model.

When interpreting test results, also consider other factors such as visible damage to the spark plug wire or plug itself. It’s best practice to replace these components as well if they show signs of wear and tear.

Pro Tip: Always consult your lawn mower manual when testing and replacing parts for optimal performance.

If your lawn mower’s coil is acting up, don’t panic – just follow these troubleshooting tips like a pro mechanic.

Troubleshooting for faulty lawn mower coil

When a lawn mower coil fails, repairs are necessary to prevent permanent damage. You can troubleshoot the issue by following simple steps that require no prior knowledge of landscaping.

  1. Remove the spark plug. Use a spark plug wrench and disconnect the spark plug cap from it.
  2. Connect a spark tester tool. Attach one end to the tip of the spark plug and insert the other end into the spark plug wire. If there is no sign of activity, then the problem lies with your lawn mower ignition coil.
  3. Measure resistance. To measure resistance, use a multimeter and set it to ohms on an appropriate scale. Place the probes on both terminals of the ignition coil. If you find that ohm resistance values do not match up with those specified in your lawnmower manual, then you should replace the ignition coil.
  4. Replace your ignition coil. Once you have identified faulty coils, disconnect any wires or connectors linking it to work with wiring schematics found in your mower’s operating manual to replace it.

Note that, as testing can be dangerous and involves handling electricity, exercise caution at all times.

It is also important to note that even if it is possible for hobbyists to fix malfunctioning coils themselves; professionals should handle more severe problems.

A significantly noticeable failing on an underperforming lawn mower could lead to significant challenges in garden maintenance which may appear avoidable through regular checks and maintenance procedures as recommended by manufacturers like Briggs & Stratton or Honda for their respective products.

Whether your lawn mower is purring like a kitten or roaring like a lion, testing the coil is a necessary evil for all DIY enthusiasts.


Testing a Lawn Mower Coil can ensure the smooth functioning of the machine. It is crucial to test for a faulty coil as it affects starting and power delivery. To test the lawn mower coil, first, remove it from the machine and attach a multimeter’s leads to either end. Then, check the reading that appears on the multimeter screen and compare it with recommended guidelines. A successful reading ensures that the coil is in excellent condition.

While testing for lawn mower coils, remember to wear protective gear for safety purposes. Also, Keep an eye out for any physical damage or corrosion on the coil surface, which requires replacement if found unsafe.

Pro Tip: Always follow recommended guidelines while testing for lawn mower coils by referring to its manual or seeking professional help to avoid further damages or safety hazards.

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Andrew Fisher

Andrew Fisher

Andrew is a dedicated father of three who really takes pride in his lawn and garden. You'll find Andrew behind the scenes of almost everything Edge Your Lawn produces. When he's not helping readers find all the information they need, he's in his backyard working on his lawn and garden landscaping. This year he hopes to build an outdoor deck and sort out his veg patches.

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