Introduction
This manual provides essential information for the assembly, operation, maintenance, and troubleshooting of your Radio Flyer Red Rider Trike. Please read all instructions carefully before use to ensure safe and proper operation. This trike is designed for children aged 2.5 to 5 years.

Image: A young child riding the Radio Flyer Red Rider Trike, illustrating the recommended age range and weight capacity.
Safety Information
WARNING: Adult assembly required. Always supervise children during use. Protective equipment such as a helmet should be worn. Not to be used in traffic.
Please read the included safety instructions thoroughly before allowing a child to use the trike. Ensure all parts are securely fastened and regularly check for wear and tear.
What's in the Box
Verify that all components are present before beginning assembly:
- Main Frame
- Seat
- Storage Bin
- Front Wheel Assembly
- Handlebars
- Rear Frame with Wheels
- Fender
- M6 x 55 Screw
- M6 x 30 Screw (2)
- M6 Washer (2)
- M6 x 56 Screw
- Locknut (4)
- Plastic Washer
- Clamp Cover
- Clamp
Assembly Instructions
Follow these general steps for assembly. Refer to the detailed diagrams in the included printed manual for specific part placement and fastening instructions.
- Attach Rear Frame: Secure the rear frame with wheels to the main frame using the appropriate screws and locknuts.
- Install Front Wheel Assembly: Insert the front wheel assembly into the main frame's steering column. Ensure the fender is correctly positioned.
- Attach Handlebars: Slide the handlebars into the top of the front wheel assembly's steering column. Secure with the clamp and clamp cover.
- Mount Seat: Attach the seat to the main frame using the designated screws and washers.
- Install Storage Bin: Secure the storage bin to the rear of the trike.
- Final Checks: Ensure all screws and nuts are tightened, and all parts are securely in place before first use.
Operating Instructions
Riding the Trike
The Red Rider Trike is designed for beginner riders. Encourage the child to sit comfortably on the seat and place their feet on the pedals. For initial learning, children may push with their feet on the ground before mastering pedaling.

Image: A child demonstrating proper riding posture on the trike.
Adjusting the Seat
The seat is adjustable to accommodate growing children. Locate the adjustment mechanism beneath the seat and slide it forward or backward to ensure the child can comfortably reach the pedals.

Image: Illustration of the adjustable seat feature, allowing the trike to grow with the child.
Using the Storage Bin
The trike features a covered storage bin at the rear. This bin can be used to carry small toys or other items during rides.

Image: The rear storage bin, highlighting its utility for carrying small items.
Quiet Ride Tires
The trike is equipped with quiet ride tires, providing a smooth and enjoyable riding experience on various surfaces.

Image: Detail of the quiet ride tires, designed for smooth operation.
Maintenance
- Cleaning: Wipe down the trike with a damp cloth and mild soap as needed. Avoid harsh chemicals.
- Regular Inspection: Periodically check all nuts, bolts, and screws to ensure they are tight. Inspect wheels and pedals for any damage or excessive wear.
- Storage: Store the trike in a dry, covered area to protect it from weather elements and prolong its lifespan.
Troubleshooting
- Pedals not turning smoothly: Check for any debris caught in the pedal mechanism. Ensure the front wheel assembly is correctly installed and lubricated if necessary.
- Loose handlebars: Tighten the clamp and screws securing the handlebars to the steering column.
- Trike feels unstable: Verify that all frame connections are secure and that the wheels are properly attached.
- Child cannot reach pedals: Adjust the seat position forward. If the child is too small, they may need to grow a bit more or use the trike by pushing with their feet on the ground.
Specifications
| Feature | Detail |
|---|---|
| Model Number | 421PZ |
| Product Dimensions | 26.4" L x 19.9" W x 19.7" H |
| Item Weight | 9.59 pounds |
| Recommended Age | 30 months - 5 years |
| Maximum Weight Capacity | 49 lbs |
| Material | Durable Steel Frame |
| Special Features | Adjustable Seat, Covered Storage Bin, Comfort Grip Handlebars, Quiet Ride Wheels |

Image: Dimensions of the trike for reference.
Warranty and Support
For additional questions, support, or concerns regarding your Radio Flyer Red Rider Trike, please contact our customer service team.
Website: https://www.radioflyer.com/customer-service/
Phone: 1 (800) 621-7613





