Introduction
This user manual provides essential information for the safe and proper use, installation, and maintenance of your Evenflo Chase Plus 2-in-1 Booster Car Seat. Please read this manual thoroughly before using the product and keep it for future reference. Adherence to these instructions is crucial for your child's safety.

Front view of the Evenflo Chase Plus 2-in-1 Booster Car Seat, showcasing its design and harness system.
Product Features
- 2-in-1 Design: Converts from a 5-point harnessed booster (for children 22-40 lbs) to a high-back booster using the vehicle's seat belt (for children up to 120 lbs).
- Right Fit Exclusive Belt Path Technology: Innovative headrest design that auto-adjusts the vehicle belt to the proper height for a secure and safer fit.
- Comfort and Convenience: Features supportive and comfortable padding. The seat cover is removable and machine washable for easy cleaning.
- Integrated Cup Holders: Two built-in cup holders keep drinks and snacks conveniently within reach.
- Easy Installation: Equipped with a lower anchor and tether system for straightforward and secure installation.
- Safety Standards: Meets or exceeds all applicable federal safety standards and Evenflo side impact test standards. Designed and tested for structural integrity at energy levels approximately 2x the federal crash test standard.

Angled view of the Evenflo Chase Plus 2-in-1 Booster Car Seat, highlighting its side profile and integrated cup holders.
Setup and Installation
Proper installation is critical for your child's safety. Always refer to your vehicle's owner's manual for specific car seat installation instructions and locations.
Harnessed Booster Mode (22-40 lbs)
- Positioning: Place the car seat forward-facing in an appropriate vehicle seating position.
- Lower Anchors: Attach the lower anchor connectors to your vehicle's lower anchor bars. Ensure a tight connection.
- Tether Strap: Route and attach the top tether strap to the vehicle's tether anchor point. Tighten the tether strap to remove slack.
- Harness Adjustment: Adjust the 5-point harness straps to fit your child snugly. The harness straps should be at or slightly above your child's shoulders.
- Chest Clip: Position the chest clip at armpit level.

A close-up view of the 5-point harness system, showing the buckle and chest clip. Ensure the chest clip is at armpit level for proper safety.
High-Back Booster Mode (up to 120 lbs)
- Remove Harness: Carefully remove the 5-point harness system according to the instructions in the full product manual.
- Positioning: Place the booster seat forward-facing in an appropriate vehicle seating position.
- Vehicle Seat Belt: Route the vehicle's lap and shoulder belt through the designated belt guides on the booster seat.
- Belt Fit: Ensure the lap belt is low on the child's hips, touching the thighs, and the shoulder belt crosses the middle of the child's shoulder and chest. The Right Fit Exclusive Belt Path Technology in the headrest will help guide the vehicle belt to the correct height.

The Evenflo Chase Plus 2-in-1 Booster Car Seat configured for high-back booster mode, with the 5-point harness removed. This mode utilizes the vehicle's seat belt.

A child properly seated in the Evenflo Chase Plus booster car seat, demonstrating correct vehicle seat belt positioning across the shoulder and lap.
Operating Instructions
Securing Your Child
- Always ensure your child is properly secured in the car seat before driving.
- In harnessed mode, pull the harness adjustment strap to tighten the harness until it is snug against your child's body, with no slack.
- In booster mode, ensure the vehicle's lap and shoulder belt are correctly positioned and snug.

A hand demonstrating the adjustment of the car seat harness, ensuring a snug and secure fit for the child.
Headrest Adjustment
- The headrest can be adjusted to accommodate your child's height.
- In harnessed mode, adjust the headrest so the harness straps are at or slightly above your child's shoulders.
- In booster mode, adjust the headrest so the vehicle's shoulder belt is properly positioned across your child's shoulder and chest.

A hand adjusting the height of the car seat's headrest, which also adjusts the shoulder belt guide for proper fit in booster mode.
Using Cup Holders
- The integrated cup holders are designed to hold beverages or small snacks.
- Ensure items placed in the cup holders do not interfere with the child's safety or the car seat's function.

A snack pouch placed in one of the integrated cup holders of the Evenflo Chase Plus car seat, demonstrating its utility for holding small items.
Maintenance
Cleaning Instructions
- The seat pad is removable and machine-washable. Use cold water and a gentle cycle. Tumble dry on low heat or hang to dry.
- For plastic and metal parts, wipe clean with mild soap and water. Do not use abrasive cleaners or solvents.
- Harness straps should be spot cleaned with mild soap and water. Do not machine wash or immerse harness straps in water, as this can weaken the webbing.
Storage
- Store the car seat in a cool, dry place away from direct sunlight when not in use.
- Do not place heavy objects on the car seat during storage.
Troubleshooting
If you encounter issues with your Evenflo Chase Plus car seat, refer to the following common solutions. For more complex problems, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Harness difficult to tighten/loosen | Harness straps are twisted or buckle is obstructed. | Untwist straps. Ensure no fabric or debris is blocking the buckle mechanism. |
| Car seat feels loose after installation | Lower anchors/tether not tightened sufficiently, or vehicle seat belt not snug. | Re-read installation instructions. Press down firmly on the car seat while tightening the lower anchor straps or vehicle seat belt. Ensure less than 1 inch of movement at the belt path. |
| Headrest not adjusting smoothly | Mechanism obstructed or dirty. | Check for obstructions. Clean any visible debris. Refer to the full manual for detailed adjustment steps. |
Specifications
| Attribute | Detail |
|---|---|
| Model Number | 30712344C |
| Product Dimensions (L x W x H) | 40.6 x 47 x 66 cm (16 x 18.5 x 26 inches) |
| Item Weight | 4.31 kg (9.5 lbs) |
| Minimum Child Weight (Harnessed) | 9.98 kg (22 lbs) |
| Maximum Child Weight (Booster) | 54.4 kg (120 lbs) |
| Minimum Child Height | 28 inches |
| Maximum Child Height | 57 inches |
| Material Type | Polyester |
| Harness Type | 5-Point |
| Installation Type | Latch |
| Orientation | Forward Facing |
| Color | Huron Black |

Diagram showing the key dimensions of the Evenflo Chase Plus 2-in-1 Booster Car Seat.
Warranty Information
Specific warranty details for the Evenflo Chase Plus 2-in-1 Booster Car Seat are typically provided with the product packaging or on the official Evenflo website. Please refer to these sources for the most accurate and up-to-date warranty terms and conditions. Generally, Evenflo products are covered by a limited warranty against defects in materials and workmanship.
Customer Support
For assistance with your Evenflo Chase Plus 2-in-1 Booster Car Seat, including installation support or troubleshooting, Evenflo offers dedicated customer service.
- Parentlink Customer Service: Evenflo's Parentlink experts are available to provide online help in real-time.
- Live Video Installation Support: You can receive live video installation support from a certified car seat safety technician to ensure proper vehicle installation. This service helps ensure your child is protected and provides confidence in your installation.
- Please visit the official Evenflo website or refer to the contact information provided with your product for details on how to access these support services.





