Hey there,

It sounds like you’re dealing with a pretty common issue that can have a few different causes. Based on your description and some typical problems with the 2007 Polaris Scrambler 500, here are several things you should check:

1. First, make sure that the idle adjustment screw is set correctly. If it’s maladjusted or if the idle mixture screw is damaged, it could cause the engine to idle too high.

2. Check both the throttle and choke cables. They need to be properly adjusted and not sticking. Also, make sure they are routed correctly. If either cable is binding or misrouted, it could cause high idle issues.

3. The vacuum slide in the carburetor might be sticking. If it doesn’t move smoothly, it could result in the engine idling too high. Cleaning the carburetor and ensuring that all the components move freely might resolve this issue.

4. Inspect the idle jet for any blockages or restrictions. If the jet is plugged or restricted, it can affect the air-fuel mixture, leading to a high idle.

5. Check for any air leaks around the carburetor or intake manifold. An air leak can cause the engine to draw in too much air, resulting in a higher than normal idle.

6. Sometimes a thorough cleaning of the carburetor can make a big difference. Ensure all passages are clean and that the carburetor is properly adjusted.

Addressing these areas should help you pinpoint and resolve the high idle problem. If you’re not comfortable doing this yourself, it might be worth taking the ATV to a professional mechanic who has experience with Polaris vehicles.

Good luck, and let us know how it goes!