Required Tools and Supplies
- Spark Plug Wrench
- 14mm Deep Socket
- Torque Wrench
- Dielectric Grease
- Eye Protection
- Nitrile Gloves
- Shop Rags
For information on tools, read the Tools and Fasteners Guide. Always wear safety glasses and nitrile gloves when servicing your Polaris RANGER.
To inspect and replace the spark plugs on your RANGER 1000, follow these steps:
1. Park the vehicle on a flat, level surface, ensure it is in PARK and remove the key.
2. Tilt the cargo box up to access the spark plugs.
3. Carefully remove the spark plug caps. Tip: Blow any dirt or debris out of the spark plug well with compressed air to prevent anything from falling into the cylinder.
4. Carefully loosen the spark plugs using the spark plug wrench provided in the tool kit and remove from the vehicle by rotating it counter-clockwise. Note: If reusing the spark plugs, take note of the cylinders they were installed in for reinstallation.
5. Inspect the electrodes for wear and carbon buildup, and verify there are no cracks around the insulation. The spark plugs should have a sharp outer edge with no rounding or erosion.
6. Inspect the spark plugs for the correct color.
- The normal insulator tip is gray, tan or light brown with few combustion deposits with unburnt and uneroded electrodes. This indicates the proper type and heat range for the engine and the service.
- The tip should not be white. A white insulator tip indicates overheating caused by an improper spark plug or incorrect throttle body adjustments.
- A wet fouled insulator tip is black. If it is black, this usually means excessive oil consumption, use of non-recommended oil or poor fuel quality.
7. Inspect and adjust the spark plug gaps, if needed. The spark plug gap is 0.03 in (0.85 mm).
8. If necessary, replace with the recommended spark plug (part number 3023571). Severe engine damage may occur if the incorrect plug is used.
9. Carefully install the spark plugs into the engine with a 14mm deep socket, and torque to 9 ft-lbs (12 Nm).
10. Apply a small amount of dielectric grease to the spark plug caps.
11. Reinstall the spark plug caps, and tilt the cargo box down.
12. Start the engine in a well-ventilated area to verify proper operation.
For more information, see your authorized Polaris Dealer. Find a dealer near you with the Dealer Locator.
Maintenance tips, procedures and specifications can be found in your Owner's Manual.
To find diagrams and replacement part numbers, use the online parts catalog.
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