1. Gather the Necessary Tools:
- Phillips head screwdriver
- Flathead screwdriver
- Metric wrenches (7mm, 8mm, 10mm)
2. Prepare the Quad:
- Turn off the engine and let it cool down completely.
- Remove the seat by pulling it up and back.
- Locate the carburetor on the left side of the engine.
3. Adjust the Idle Speed Screw:
- Start by adjusting the idle speed screw. This screw is usually located on the left side of the carburetor, near the throttle cable.
- Turn the screw counterclockwise to increase idle speed and clockwise to decrease idle speed.
- The ideal idle speed for the 350 Warrior is between 1350 to 1500 RPM. Use a tachometer to check the RPM accurately.
4. Adjust the Fuel Mixture Screw:
- Next, adjust the fuel mixture screw. This screw is usually located near the bottom of the carburetor, facing backward.
- Turn the screw counterclockwise to make the mixture richer (more fuel) and clockwise to make the mixture leaner (less fuel).
- The ideal fuel mixture setting varies based on the conditions, but generally, a richer mixture is recommended for cold weather and a leaner mixture for hot weather.
5. Check the Float Adjustment:
- The float is responsible for controlling the fuel level in the carburetor. Checking and adjusting the float level is important for proper fuel delivery.
- To check the float level, you need to remove the float bowl by unscrewing the bowl nut at the bottom of the carburetor.
- Measure the distance between the float bowl gasket surface and the float tang (the small part that touches the needle valve).
- The float level specification for the 350 Warrior is 29.5 mm ± 2 mm (measured with the carburetor held upside down).
- If necessary, adjust the float level by bending the float tang gently.
6. Reassemble and Test:
- Once you're done with the adjustments, reassemble the carburetor and reinstall the seat.
- Start the engine and let it warm up.
- Check the idle speed again and make any necessary fine adjustments.
- Test the quad by riding it and ensure that the engine performs well and responds smoothly to throttle input.
Note:
If you're not confident in performing carburetor adjustments yourself, it's best to consult a professional or an experienced mechanic. Incorrect adjustments can lead to improper engine performance or damage to the carburetor.
