NGK Spark Plug - BPR4FS

NGK BPR4FS Spark Plugs. This set of 4 NGK spark plugs features a copper core for reliable ignition...

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Product Information

Full details

This guide is for users of NGK BPR4FS spark plugs, offering reliable ignition for various Kohler engines and mowers. The key benefit is enhanced engine performance due to the copper core design. However, it's crucial to ensure compatibility with your specific engine model before installation. This guide provides comprehensive information on features, usage, and maintenance to help you get the most out of your spark plugs.

All features

Model Part Number	NGK-BPR4FS
Brand	NGK

Extended Product Information

FAQs

What is the recommended torque for installing the spark plug?

Refer to your engine's manual for the specific torque specifications. Overtightening can damage the engine, while undertightening can cause leaks.

How often should I replace the NGK BPR4FS spark plugs?

The replacement interval depends on usage and engine type. Generally, replace spark plugs every 100-300 hours of operation or as recommended in your engine manual.

Can I use these spark plugs in other engines?

These spark plugs are primarily designed for Kohler engines. Always check the compatibility chart or your engine manual to ensure a proper fit and performance.

What tools do I need to install the spark plugs?

You will need a spark plug socket (16 mm) and a torque wrench to ensure proper installation. Also, you may need a spark plug gap tool to set the correct gap.

What does the 'copper core' in the spark plug mean?

The copper core enhances the spark plug's heat dissipation capabilities, leading to improved performance and longevity.

How do I determine the correct spark plug gap?

The correct spark plug gap is specified in your engine's manual. Use a spark plug gap tool to measure and adjust the gap as needed before installation.

What should I do if the spark plug is fouled?

If the spark plug is fouled, clean it carefully with a wire brush or replace it with a new one. Identify and address the cause of fouling, such as a rich fuel mixture or oil in the combustion chamber.

Troubleshooting

Engine misfires or runs rough.

Check the spark plug for fouling, wear, or damage. Replace the spark plug if necessary. Also, ensure the spark plug gap is set correctly according to engine specifications.

Engine won't start.

Check the spark plug for spark by grounding it against the engine block while cranking. If there is no spark, inspect the ignition system. If there is a spark, ensure the spark plug is properly installed and the fuel supply is adequate.

Engine performance is poor.

Inspect the spark plug for signs of wear or damage. Clean or replace the spark plug. Check for any other engine issues, such as air filter blockage or fuel delivery problems.

Spark plug is covered in soot.

This often indicates a rich fuel mixture or a problem with the air filter. Clean or replace the spark plug. Check and address the underlying cause, such as a clogged air filter or faulty carburetor.

Pros and Cons

Pros

Reliable ignition performance due to the copper core.
Easy installation with standard thread and spanner sizes.
Wide compatibility with multiple Kohler engine models.
Durable construction ensures a longer lifespan.
Improves engine efficiency and performance.

Cons

Requires specific tools for installation and removal.
Compatibility must be verified for each engine model.
Spark plug gap may need adjustment based on the engine.
May require periodic replacement depending on usage.
Performance can be affected by incorrect installation.

Setup, Compatibility & Care

Setup: Ensure the engine is cool before starting. Use the correct tools (16 mm spanner) to remove the old spark plug and install the new NGK BPR4FS plug. Tighten the new spark plug to the manufacturer's recommended torque specifications to avoid damage. Check and adjust the spark plug gap if necessary, according to your engine's specifications.

Compatibility: These spark plugs are compatible with Kohler Engines & Kohler Grass mowers, including models like 17.0HP KT17, 18.0HP M18, 19.0HP KT19, 20.0HP M20, and 21.0HP KT21. They are also suitable for models KT17, KT19, KT21, MV16, MV18, and MV20. Always double-check your engine's manual to confirm compatibility.

Care: Inspect the spark plugs regularly for wear, fouling, or damage. Clean the spark plugs if necessary, or replace them as recommended by the engine manufacturer. Ensure the spark plug wire is securely connected. Store spare spark plugs in a dry and clean environment.