Choosing the Right Spark Plug for Your 2013 LEM DX2 Beta
Keep your dirt bike's engine firing strong with the correct new aftermarket spark plug.
- The recommended aftermarket spark plugs are the NGK B7HS and the Champion L82C.<sup></sup>
- NGK plugs are preferred for 2-stroke engines for better performance and longevity, while Champion is a solid budget choice.<sup></sup>
- Before installing, always verify the spark plug gap is set to 0.028 inches.<sup></sup>
- Replacement is very easy and requires only a basic spark plug wrench.
Signs of a Failing Spark Plug
A worn-out or fouled spark plug can cause noticeable problems with how your LEM DX2 Beta runs. Because it's a 2-stroke engine, the spark plug can get dirty with oil and carbon buildup more quickly than a 4-stroke. If you notice any of these signs, a bad spark plug is a likely suspect.
Common Failure Symptoms:
- Hard Starting: The engine turns over but won't fire up, or takes many kicks to start.
- Engine Misfires: You might hear a popping or sputtering sound, especially when you open the throttle.
- Poor Acceleration: The bike feels sluggish or bogs down when you try to accelerate.
- Rough Idling: The engine doesn't run smoothly when idling and may stall.
- Visible Fouling: If you remove the plug, the tip will be black, wet, or covered in carbon deposits.
Choosing the Right Aftermarket Spark Plug
For the 2013 LEM DX2 Beta, you have a choice between reliable brands that offer compatible plugs. The most important thing is to get the correct part number with the right heat range and size for your bike's engine.
Brand Tiers: NGK vs. Champion
NGK (Recommended): NGK is widely considered the top choice for 2-stroke engines like the one in your DX2 Beta. Owners and mechanics report that NGK plugs provide a more reliable and cleaner spark, which helps prevent fouling and improves throttle response. They generally last longer, making them worth the slightly higher cost for riders who want the best performance and less maintenance hassle. The correct NGK part for your bike is the B7HS.
Champion (Budget-Friendly): Champion spark plugs are a dependable and affordable option. They work well for casual riding and general use. However, in a high-revving 2-stroke engine, they may foul or wear out more quickly than an NGK plug. If you're on a tight budget, a Champion plug will get the job done, but you may need to clean or replace it more often. The correct Champion part for your bike is the L82C.
Pro Tip: Always check the spark plug gap before installation. The correct gap for the 2013 LEM DX2 Beta is 0.028 inches. Use a feeler gauge to ensure the distance between the center and ground electrodes is correct.
Cost of a New Spark Plug (2013 LEM DX2 Beta)
| Part Type | Price Range |
|---|---|
| New Aftermarket (Champion, NGK) | $3.48 - $14.32 |
| Shop Labor | $25 - $50 |
Note: Remanufactured or used spark plugs are not recommended or available.
Frequently Asked Questions (FAQ)
How often should I change the spark plug on my LEM DX2 Beta?
For a youth dirt bike, it's good practice to check the spark plug every 10-15 hours of riding and replace it at least once a season, or whenever it looks fouled or worn. Since they are inexpensive, changing them often is cheap insurance against starting problems.
Is there a recall on the spark plug for the 2013 LEM DX2 Beta?
No, there are no recalls or technical service bulletins (TSBs) from the NHTSA or the manufacturer related to the spark plugs on this vehicle. This is common for niche off-road bikes.
What tools do I need to change the spark plug?
You will need a spark plug wrench (a deep socket designed for spark plugs) and a ratchet. A gap gauge is also highly recommended to check the gap before installation. The hex size for the Champion L82C plug is 0.813 inches (or 13/16").
What does a fouled spark plug look like?
A fouled plug will have a black, sooty, or wet, oily appearance on the electrode tip. This buildup prevents a strong spark. A healthy plug should have a light tan or grayish-brown color.
Technical Specifications
OEM Part Numbers: B7HS L82C
Recommended Spark Plugs: NGK B7HS, Champion L82C Gap: 0.028 in Champion Hex Size: 0.813 in (13/16") Champion Thread Reach: 0.5 in
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- LEM DX2 Beta: