1. Product Overview
The NGK Resistor Sparkplug BKR7E is engineered to deliver consistent and reliable ignition for your Polaris SPORTSMAN 700 Twin 4x4. Known for its OEM quality and robust construction, this spark plug features a triple-gasket sealing process and precise tolerances to ensure optimal engine performance and longevity.
Image 1.1: NGK Resistor Sparkplug BKR7E. This image displays a single NGK spark plug, highlighting its ceramic insulator, metal shell, and electrode tip.
Key Features:
- Triple-gasket sealing process: Ensures a secure seal against combustion gas leakage.
- Consistent performance: Designed for reliable ignition and smooth engine operation.
- OEM quality: Manufactured to meet original equipment specifications.
- Precision engineering: Built with tight tolerances for optimal fit and function.
2. Important Safety Information
Always prioritize safety when working on your vehicle. Failure to follow these safety guidelines may result in injury or damage to the vehicle.
- Ensure the engine is OFF and COOL before beginning any work.
- Disconnect the battery's negative terminal to prevent accidental starting or electrical shorts.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- Refer to your vehicle's service manual for specific torque specifications and procedures.
- Keep spark plugs and tools away from children.
3. Package Contents
Your package should contain the following items:
- NGK Resistor Sparkplug BKR7E (Quantity as ordered)
4. Specifications
| Specification | Detail |
|---|---|
| Brand | NGK |
| Core Material | Copper |
| Thread Size | RM |
| Top Material Type | Copper |
| Vehicle Service Type | Car, Truck (Note: This spark plug is specifically designed for Polaris SPORTSMAN 700 Twin 4x4 models from 2002-2006, despite the general service type listed.) |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | NGK |
| Model Name | NGK V-Power 4644 Spark Plug |
| Item Weight | 1.6 ounces |
| Product Dimensions | 1 x 3.25 x 1 inches |
| Item Model Number | 4644 |
| Manufacturer Part Number | NGK126 |
| Position | Front, Rear |
5. Vehicle Compatibility
This NGK spark plug is compatible with various Polaris models. Please refer to the image below for a detailed list of compatible vehicles, including the Polaris SPORTSMAN 700 Twin 4x4 (2002-2006).
Image 5.1: Vehicle Compatibility List. This image displays a comprehensive list of Polaris models and years that are compatible with this spark plug, including various Sportsman and Ranger models.
6. Installation Instructions
Follow these steps carefully for proper spark plug installation. If you are unsure about any step, consult a qualified mechanic or your vehicle's service manual.
6.1. Preparation
- Ensure the engine is completely cool to avoid burns and to prevent damage to the cylinder head threads.
- Gather necessary tools: spark plug wrench, torque wrench, spark plug gap tool (if needed), dielectric grease, and a wire brush.
- Locate the spark plugs on your Polaris SPORTSMAN 700 Twin 4x4. They are typically found under the spark plug boots.
- Clean the area around the spark plugs to prevent dirt and debris from falling into the combustion chamber when the old plugs are removed.
6.2. Removal of Old Spark Plugs
- Carefully pull the spark plug boots off the spark plugs. Do not pull on the wires.
- Use a spark plug wrench to loosen and remove the old spark plugs. Turn counter-clockwise.
- Inspect the old spark plugs for signs of wear, fouling, or damage. This can provide insights into engine health.
6.3. Installation of New Spark Plugs
- Check the gap: Although NGK spark plugs are typically pre-gapped, it is good practice to verify the gap using a spark plug gap tool. Refer to your Polaris service manual for the correct gap specification. Adjust if necessary by carefully bending the ground electrode.
- Apply a small amount of anti-seize compound to the threads of the new spark plugs to prevent seizing.
- Thread the new spark plugs into the cylinder head by hand to ensure they are not cross-threaded. They should turn easily.
- Once hand-tight, use a torque wrench to tighten the spark plugs to the manufacturer's specified torque. Over-tightening can damage the spark plug or cylinder head.
- Apply a small amount of dielectric grease inside the spark plug boots to ensure a good electrical connection and prevent moisture intrusion.
- Push the spark plug boots firmly back onto the new spark plugs until they click into place.
6.4. Post-Installation Check
- Double-check all connections and ensure no tools or debris are left in the engine bay.
- Start the engine and listen for any unusual noises or misfires. The engine should run smoothly.
Video 6.1: Ignition System Components Overview. This video provides a visual overview of spark plug components and related ignition system parts for Polaris vehicles, which can be helpful for understanding the parts involved in an installation.
7. Maintenance
Regular maintenance of your spark plugs is crucial for optimal engine performance and fuel efficiency.
- Inspection: Inspect spark plugs every 100-200 hours of operation or annually, whichever comes first. Look for signs of wear, carbon buildup, or damage to the electrodes.
- Replacement: Replace spark plugs according to your Polaris vehicle's service manual recommendations, typically every 200-400 hours or every 1-2 years.
- Cleaning: If plugs are fouled but otherwise in good condition, they can sometimes be cleaned with a wire brush and spark plug cleaner. However, replacement is generally recommended for best performance.
8. Troubleshooting
If you experience issues after spark plug installation or during normal operation, consult the table below for common problems and potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine Misfires/Rough Idling | Incorrect spark plug gap, fouled plug, loose connection, damaged plug wire. | Check/adjust gap, inspect/clean/replace plug, ensure tight connections, inspect plug wires. |
| Difficulty Starting | Fouled spark plugs, weak spark, incorrect timing. | Inspect/replace spark plugs, check ignition system components, consult service manual for timing. |
| Reduced Fuel Economy | Worn or fouled spark plugs. | Replace spark plugs at recommended intervals. |
| Engine Knocking/Ping | Incorrect heat range spark plug, pre-ignition. | Ensure correct spark plug heat range for your engine. Consult a professional. |
9. Warranty Information
NGK spark plugs are manufactured to high-quality standards. For specific warranty details, please refer to the packaging or contact NGK customer service directly. Keep your proof of purchase for any warranty claims.
10. Support
For further assistance or technical support, please visit the official NGK website or contact their customer service department. You may also consult your authorized Polaris dealer for vehicle-specific guidance.
