1. Introduction
Welcome to the user manual for your new SJOEF Dolly 12-inch Kids Bike. This manual provides essential information for the safe assembly, operation, and maintenance of the bicycle. Please read it thoroughly before assembly and first use to ensure your child's safety and the longevity of the product.
The SJOEF Dolly bike is designed in Amsterdam, specifically for children aged 2 to 6 years, or those with a height of 95 cm and above. It features a trendy design and is equipped with removable training wheels to assist young riders. The handlebar and saddle heights are adjustable to accommodate your child's growth.
2. Safety Information
Your child's safety is paramount. Always ensure the bike is in good working condition before each ride and that your child wears appropriate safety gear.
- Helmet Use: Always ensure your child wears a properly fitted helmet that meets safety standards.
- Adult Supervision: Children should always be supervised by an adult while riding.
- Braking System: The bike is equipped with both hand brakes and a coaster brake (pedal backward brake) for independent and reliable stopping power. Teach your child how to use both.
- Chain Guard: A full chain guard is installed to prevent clothing or body parts from getting caught in the chain.
- Handlebar Safety: The handlebar features a protective pad and safe handlebar ends to minimize injury risk.
- Riding Environment: Ensure your child rides in safe areas, away from traffic, steep hills, or uneven terrain.
- Weight Limit: Adhere to the recommended weight limit for the bicycle.
Regularly check all bolts, nuts, and quick releases to ensure they are securely fastened.
3. Package Contents
Upon unpacking, please verify that all the following components are present:
- SJOEF Dolly 12-inch Kids Bike (95% pre-assembled frame with wheels)
- Handlebar with streamers and bell
- Saddle and seat post
- Pedals (Left and Right)
- Removable Training Wheels (2)
- Front Basket
- Rear Doll Seat
- Basic Assembly Tools (wrenches, Allen keys)

Image 1: Complete SJOEF Dolly 12-inch Kids Bike with training wheels, basket, and doll seat.
4. Setup and Assembly
The SJOEF Dolly bike comes 95% pre-assembled, making the final setup quick and straightforward. Basic tools are included. A beginner can typically complete assembly in 5 to 10 minutes.
- Install Handlebars: Insert the handlebar stem into the fork tube. Ensure the handlebars are straight and aligned with the front wheel. Tighten the stem bolt securely using the provided tools.
- Attach Pedals: Identify the Left (L) and Right (R) pedals. The left pedal tightens counter-clockwise, and the right pedal tightens clockwise. Screw them firmly into the crank arms.
- Adjust Saddle Height: Insert the seat post with the saddle into the frame's seat tube. Adjust the height so your child can comfortably touch the ground with their toes while seated. Secure the quick-release lever or bolt.
- Install Training Wheels: Attach the training wheels to the rear axle. Ensure they are securely fastened and provide stable support. Adjust their height so they lightly touch the ground when the bike is upright.

Image 2: Detail of the removable training wheels and the protective chain guard.
- Attach Front Basket: Secure the front basket to the handlebars using the provided brackets and screws.
- Install Rear Doll Seat: Mount the doll seat to the rear rack of the bicycle. Ensure it is stable and securely attached.

Image 3: Side view of the bike highlighting the rear doll seat.
After assembly, double-check all connections and ensure everything is tight and secure before the first ride.
5. Operating Instructions
Familiarize your child with the bike's controls in a safe, open space.
- Starting to Ride: With training wheels, your child can push off and pedal immediately. Encourage them to look forward, not down at their feet.
- Braking: Teach your child to use both the hand brake (front wheel) and the coaster brake (rear wheel). The hand brake lever is located on the handlebar. Practice gentle braking first.

Image 4: Detail of the handlebar, showing the brake lever and decorative streamers.
- Steering: Guide your child to steer gently by turning the handlebars.
- Removing Training Wheels: Once your child gains confidence and balance, the training wheels can be easily removed. This transition should be done gradually and with continued supervision.
- Adjustments: Periodically check and adjust the saddle and handlebar height as your child grows to maintain a comfortable and safe riding position.
6. Maintenance
Regular maintenance ensures the bike remains safe and functional.
- Tire Pressure: Check tire pressure before each ride. Maintain the recommended PSI (pounds per square inch) indicated on the tire sidewall.
- Brake Check: Ensure both hand and coaster brakes are responsive and stop the bike effectively. Adjust brake cables if necessary.
- Chain Lubrication: Lubricate the chain periodically, especially after riding in wet conditions, to ensure smooth pedaling and prevent rust.
- Bolt Tightness: Regularly inspect and tighten all bolts and nuts, particularly on the wheels, handlebars, seat post, and pedals.
- Cleaning: Clean the bike with mild soap and water. Avoid high-pressure washing, which can damage bearings. Dry thoroughly after cleaning.
- Storage: Store the bike in a dry place, away from direct sunlight and extreme temperatures, to prevent rust and material degradation.
7. Troubleshooting
Here are solutions to common issues you might encounter:
| Problem | Possible Cause | Solution |
|---|---|---|
| Brakes feel loose or ineffective | Brake cable stretched or pads worn | Adjust brake cable tension at the lever or caliper. Replace worn brake pads. |
| Tires are flat or soft | Low air pressure or puncture | Inflate tires to recommended PSI. Check for punctures and repair or replace the inner tube. |
| Pedaling is stiff or noisy | Dry or dirty chain, loose crank arm | Clean and lubricate the chain. Tighten crank arm bolts. |
| Training wheels wobble | Loose mounting bolts | Ensure training wheel bolts are securely tightened to the rear axle. |
| Saddle or handlebars slip | Loose quick-release or bolt | Tighten the quick-release lever or bolt for the saddle/handlebar stem. |
If you encounter issues not listed here or require further assistance, please contact SJOEF customer support.
8. Specifications
Detailed specifications for the SJOEF Dolly 12-inch Kids Bike:
| Feature | Detail |
|---|---|
| Model Name | Dolly |
| Model Number | BIS12M2-Pink |
| Brand | SJOEF |
| Color | Pink |
| Size | 12 inch |
| Frame Material | Alloy Steel |
| Item Weight | 12070 Grams (12.07 kg) |
| Product Dimensions (L x W x H) | 91 x 53 x 20 cm |
| Age Range (Description) | Children |
| Power Source | Pedal |
| Special Features | Basket, Removable Training Wheels |
| Suspension Type | Rear Suspension, Fork Suspension |
| Batteries Included | No |
9. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. SJOEF stands behind the quality of its products.
If you have any questions, require technical support, or need replacement parts, please contact SJOEF customer service through the retailer where the product was purchased or visit the official SJOEF website for contact details.




