Tools and Supplies Required
- T30 TORX® Socket
- Spark Plug Wrench
- 23mm Deep Socket
- Torque Wrench
- Dielectric Grease or Petroleum Jelly
- Eye Protection
- Nitrile Gloves
- Shop Rags
To learn more about tools, read the Tools and Fasteners Guide. Always wear safety glasses and nitrile gloves when servicing your Polaris snowmobile.
To inspect and replace the spark plugs on your 650 TITAN Adventure, follow these steps:
1. Park the snowmobile on a flat and level surface.
2. Remove both side panels by turning the three quarter-turn latches.
3. Disconnect the two hood latches.
4. Lift the hood up slightly, disconnect the 7S Display connector, and remove from the sled.
5. Using the T30 TORX® socket end of the spark plug wrench, remove the bolts retaining the load center.
6. Carefully unclip the retention clips from the radiator hoses and rotate the load center away from the radiator. Note: Air intake removed for visual purposes.
7. Remove the spark plug leads.
8. Clean the plug area so no debris can fall into the engine when the plug is removed.
9. Using the spark plug wrench provided in the tool kit, remove the spark plugs by rotating it counterclockwise. Tip: If reusing the spark plugs, take note of the cylinders they were installed in for reinstallation.
10. Inspect the electrodes for wear and carbon buildup and verify there are no cracks around the insulator. The spark plugs should have a sharp outer edge with no rounding or erosion.
11. Inspect the spark plugs for the correct color.
- A light brown/dark tan color indicates the engine is running properly.
- If the spark plug electrode/insulator tip is white, the engine may be running lean. Inspect the engine, throttle body boots, etc. for air leaks.
- If the spark plug electrode/insulator is black, oily, or shows heavy soot, the engine may be running rich. Inspect the engine, fuel system and lubrication system for problems.
12. Inspect and adjust the spark plug gaps, if needed. The gap should measure 0.027 inches (0.70 mm).
13. If necessary, replace with the recommended spark plug. The recommended spark plug is part number 3024357. Severe engine damage may occur if the incorrect plug is used.
14. Carefully install the spark plugs into the engine with a 23mm deep socket and torque to 18-22 ft-lbs (24-30 Nm).
15. Before continuing, apply a small amount of dielectric grease to the spark plug caps.
16. Reconnect the spark plug caps onto the spark plugs and ensure they are secure.
17. Reinstall the load center back onto the radiator and reconnect clips to the radiator hoses.
18. Place the spark plug wrench back into the holder.
19. Reinstall the hood panel, ensuring the front tabs are properly engaged.
20. Reconnect the 7S Display connector underneath and verify it is secure.
21. Secure the two hood panel latches.
22. Reinstall both side panels by inserting the upper tab and pivoting in to engage the lower tab.
23. Turn the three quarter-turn latches to secure each panel.
24. In a well-ventilated area, start the vehicle to ensure proper operation.
For more information, see your authorized Polaris Dealer. To find a dealer near you, use 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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