Spark Plug Gap MTD Snowblower – How to Check and Adjust?

When it comes to operating your MTD snowblower, one crucial factor to keep in mind is the spark plug gap. The gap, or distance between the electrodes on the spark plug, affects the engine’s ability to ignite the fuel mixture and can greatly impact its performance.

In this blog, we’ll discuss the importance of spark plug gap in a snowblower and provide a brief overview of MTD snowblower models and engines. By the end of this article, you’ll understand the role of spark plug gap in your snowblower’s operation and be able to check and adjust it for optimal performance.

What is the Spark Plug Gap for an Mtd Snowblower?

The spark plug gap refers to the distance between the center and ground electrode of the spark plug. The gap size is important because it determines the amount of voltage required to create a spark across the gap.

If the gap is too small, the voltage required to create a spark is lower, but the spark itself may be weaker and less effective at igniting the fuel-air mixture in the engine. On the other hand, if the gap is too large, more voltage is required to create a spark, but the spark may be stronger and better at igniting the mixture.

The optimal spark plug gap size for a particular engine depends on several factors, including the type of ignition system, the fuel-air mixture, and the engine’s operating conditions. In general, the gap size should be set according to the manufacturer’s recommendations, which can usually be found in the owner’s manual or service manual for the engine. It’s also worth noting that some high-performance engines may require a smaller or larger gap size than a standard engine, so it’s important to check the specifications for your particular engine.

As for the metric vs. standard debate, both systems have their advantages and disadvantages, and the choice often comes down to personal preference or the country’s standard. It’s important to be familiar with both systems, especially if you work with international suppliers or customers.

Regarding the discussion about the preventative maintenance and lubrication of the snowblower, it’s always a good idea to follow the manufacturer’s recommendations for maintenance and lubrication to keep the machine running smoothly and prevent premature wear or damage. The use of synthetic grease and anti-seize compounds can help reduce friction and corrosion and prolong the life of the machine.

Finally, the technique of increasing the spark plug gap to improve ignition may work in some cases, but it’s not recommended as a permanent solution. The correct spark plug gap size should be set according to the manufacturer’s recommendations, and if the engine is experiencing starting or running problems, it’s best to diagnose and address the underlying issue rather than relying on a temporary fix.

Understanding Spark Plug Gap

Understanding spark plug gap is essential when it comes to maintaining the performance of a snowblower. The spark plug gap refers to the distance between the center electrode and the ground electrode of the spark plug. It is a critical factor in the ignition process because it determines the intensity and duration of the spark that ignites the fuel mixture in the engine cylinder.

A properly adjusted spark plug gap is crucial for optimal engine performance. If the gap is too small, the spark may not be strong enough to ignite the fuel mixture, resulting in poor combustion and reduced power output. Conversely, if the gap is too wide, the spark may be too weak to ignite the fuel mixture at all, resulting in engine misfires and poor running conditions.

For MTD snowblower models, the optimal spark plug gap may vary depending on the engine type and specifications. However, most MTD snowblower engines require a spark plug gap between 0.020 and 0.030 inches. It is crucial to refer to the manufacturer’s manual or consult with a professional mechanic to determine the recommended spark plug gap for your specific MTD snowblower model.

In addition to affecting engine performance, spark plug gap also has an impact on fuel efficiency and emissions. A poorly adjusted gap can lead to incomplete combustion, which can result in higher fuel consumption and increased emissions of harmful pollutants. Therefore, it is essential to ensure that the spark plug gap is properly adjusted during regular maintenance and tune-up procedures.

Understanding spark plug gap is crucial to maintaining optimal engine performance and fuel efficiency for your MTD snowblower. Be sure to refer to the manufacturer’s manual or consult with a professional mechanic to determine the recommended spark plug gap for your specific model. Proper adjustment of the spark plug gap can make a significant difference in the overall performance and longevity of your snowblower engine.

Checking and Adjusting Spark Plug Gap on Mtd Snowblower

Checking and adjusting the spark plug gap on your MTD snowblower is a simple and important maintenance task that can help ensure the engine runs smoothly and efficiently. Here are the necessary tools and step-by-step instructions for completing this task:

Necessary Tools for Checking and Adjusting Spark Plug Gap

• A spark plug gap tool (also known as a feeler gauge) that measures the distance between the spark plug electrodes
• A socket wrench or spark plug socket
• A screwdriver (if necessary for removing the spark plug cover or other components)

Step-by-step Instructions for Checking and Adjusting Spark Plug Gap

1. Turn off the engine and allow it to cool down completely.
2. Locate the spark plug on your MTD snowblower. It is typically located on the engine block and covered by a rubber boot.
3. Remove the spark plug by gently pulling on the rubber boot. Use a socket wrench or spark plug socket to loosen and remove the spark plug.
4. Use the spark plug gap tool to measure the gap between the electrodes. The proper gap for your MTD snowblower will be listed in the owner’s manual or on the spark plug packaging.
5. Adjust the gap as necessary by gently bending the ground electrode with a screwdriver or pliers. Be sure to adjust the electrode at a 90-degree angle to avoid damaging the spark plug.
6. Once the gap is set to the correct distance, reinstall the spark plug and tighten it by hand. Use a socket wrench or spark plug socket to tighten the spark plug to the recommended torque specification.
7. Reconnect the rubber boot to the spark plug.
8. Start the engine and ensure that it is running smoothly.

Tips for Proper Adjustment and Common Mistakes to Avoid

• Always use a spark plug gap tool to ensure accurate measurements.
• Be gentle when adjusting the electrode to avoid damaging the spark plug.
• Check the spark plug gap regularly, especially before the start of each snowblower season.
• Avoid over-tightening the spark plug, as this can damage the threads or break the ceramic insulator.
• Use the recommended spark plug for your MTD snowblower model and engine type.

Symptoms of Incorrect Spark Plug Gap on Mtd Snowblower

A properly gapped spark plug is essential for efficient engine performance. If the spark plug gap is incorrect on an MTD snowblower, it can lead to a variety of problems. In this section, we’ll discuss the symptoms of incorrect spark plug gap and how to troubleshoot them.

Common Symptoms of Too Small of a Spark Plug Gap

If the spark plug gap is too small, it can cause the engine to misfire or run rough. This can result in poor acceleration, decreased power, and reduced fuel efficiency. Other symptoms of a small spark plug gap include:

• Hard starting
• Poor idling
• Engine stalling
• Increased emissions

Common Symptoms of Too Large of a Spark Plug Gap

If the spark plug gap is too large, it can cause the engine to run hot and damage the spark plug. This can result in pre-ignition, detonation, or engine damage. Other symptoms of a large spark plug gap include:

• Hard starting
• Poor acceleration
• Reduced power
• Engine misfires
• Increased emissions

How to Troubleshoot and Diagnose Spark Plug Gap Problems

If you’re experiencing any of the symptoms mentioned above, it’s important to check the spark plug gap. If the gap is incorrect, you’ll need to adjust it. However, if the gap is correct, you may need to look for other problems that are causing the symptoms.

Some Troubleshooting Steps You Can Take Include:.

• Inspecting the spark plug for damage or wear
• Checking the fuel system for clogs or leaks
• Examining the air filter for dirt or damage
• Testing the ignition system for faults
• Inspecting the carburetor for problems

By performing these steps, you can diagnose the problem and make the necessary repairs. However, if you’re unsure about how to diagnose or repair a problem with your MTD snowblower, it’s best to consult a professional for assistance.

Maintenance Tips for Spark Plug Gap on Mtd Snowblower

Maintaining the spark plug gap in your MTD snowblower is essential for optimal engine performance and longevity. Here are some maintenance tips to ensure that your snowblower’s spark plug gap is always in good condition.

Regular Maintenance Schedule for Checking and Adjusting Spark Plug Gap

It is recommended that you check and adjust your MTD snowblower’s spark plug gap at least once a year. However, if you notice any symptoms of an incorrect spark plug gap, such as difficulty starting the engine, reduced power, or increased fuel consumption, you should check the spark plug gap immediately.

Best Practices for Maintaining Spark Plug Gap in Mtd Snowblower

To maintain the spark plug gap, you should first disconnect the spark plug wire and remove the spark plug from the engine. Next, use a spark plug gap tool to measure the gap between the center and ground electrode. If the gap is too small or too large, use a pair of pliers to carefully bend the center electrode until the gap matches the manufacturer’s specifications.

It is also important to clean the spark plug regularly to prevent fouling. To do this, use a wire brush to remove any debris or carbon buildup from the electrodes. Be sure to inspect the spark plug for any signs of damage or wear, such as cracks or worn electrodes, and replace it if necessary.

Recommended Spark Plug Replacement Intervals

To ensure optimal engine performance, it is recommended that you replace your MTD snowblower’s spark plug every 100 hours of use or at least once a year, whichever comes first. Additionally, it is important to use the correct spark plug recommended by the manufacturer to ensure compatibility and performance.

By following these maintenance tips, you can ensure that your MTD snowblower’s spark plug gap is always in good condition, which can help prevent engine problems and prolong the life of your snowblower.

Optimal spark plug gap for MTD snowblower models and engines

MTD Snowblower Model	Engine Type	Optimal Spark Plug Gap
31AS62EE700	OHV	0.030 inches
31AM62EE700	OHV	0.030 inches
31AM66EG700	OHV	0.030 inches
31AS6BEE799	OHV	0.030 inches
31AS6BEE729	OHV	0.030 inches
31AM63TF799	OHV	0.030 inches
31AM62KE704	Snow Series	0.030 inches
31AM63LF704	Snow Series	0.030 inches
31AS63EE700	Snow Series	0.030 inches
31AH65FH795	Snow Series	0.030 inches
31AH65FH700	Snow Series	0.030 inches
31AS6HEG799	Powermore	0.030 inches
31AM66P3766	Powermore	0.030 inches
31AH65FH829	Powermore	0.030 inches
31AS6FEE729	Powermore	0.030 inches

Note: The optimal spark plug gap may vary depending on the specific engine model and manufacturer’s recommendation. Always refer to the manufacturer’s guidelines before adjusting the spark plug gap on your MTD snowblower.

Frequently Asked Questions

Can a Spark Plug Gap That is Too Small Cause Engine Damage in My Mtd Snowblower?

A: Yes, a spark plug gap that is too small can cause engine damage. When the gap is too small, the spark may not be strong enough to ignite the fuel mixture, causing incomplete combustion. This can lead to carbon buildup on the spark plug and inside the engine, which can eventually cause engine damage.

Can I Adjust the Spark Plug Gap on My Mtd Snowblower While the Engine is Running?

A: No, it is not safe to adjust the spark plug gap on your MTD snowblower while the engine is running. Always turn off the engine and disconnect the spark plug wire before attempting to adjust the gap. Attempting to adjust the gap while the engine is running can result in electric shock or other serious injuries.

What Should I Do if I Accidentally Drop My Spark Plug While Installing It in My Mtd Snowblower?

A: If you drop your spark plug while installing it in your MTD snowblower, inspect the spark plug carefully for any signs of damage, such as cracks or chips. If the spark plug appears to be undamaged, you can continue to use it. However, if the spark plug is damaged, you should replace it before starting the engine.

Can I Use Any Type of Spark Plug in My Mtd Snowblower?

A: No, it is important to use the correct type of spark plug in your MTD snowblower. Refer to your owner’s manual or consult with a certified technician to determine the correct spark plug type for your specific model. Using the wrong type of spark plug can cause poor engine performance or even engine damage.

How Do I Know When It’s Time to Replace My Spark Plug in My Mtd Snowblower?

A: There are a few signs that indicate it may be time to replace the spark plug in your MTD snowblower. If you notice difficulty starting the engine, poor engine performance, or excessive fuel consumption, it may be time to replace the spark plug. Additionally, it is recommended to replace the spark plug after a certain number of hours of operation, as specified in your owner’s manual.

Conclusion

The spark plug gap is an essential component of an MTD snowblower’s engine that plays a critical role in its optimal functioning. An incorrect spark plug gap can lead to various engine issues, such as poor performance, difficulty starting, and fuel inefficiency.

Therefore, it is crucial to regularly maintain and adjust the spark plug gap as per the manufacturer’s recommendations. By doing so, you can ensure your snowblower runs smoothly and efficiently, especially during the winter months when it is needed the most.

So, if you haven’t already, take some time to check and adjust your MTD snowblower’s spark plug gap and follow the maintenance tips discussed above for optimal performance.