AVASTA Rubato 20" Pro BMX Freestyle Bike User Manual

1. Introduction

This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your AVASTA Rubato 20" Pro BMX Freestyle Bike. Please read this manual thoroughly before using the bicycle to ensure proper function and rider safety.

The AVASTA Rubato 20" Pro Freestyle BMX bike is designed for children and beginners entering the world of BMX. It is suitable for young riders who wish to ride on roads, in parks, or on trails. The recommended rider height is between 108 cm and 188 cm (approximately 122 cm to 180 cm).

2. Safety Information

Always prioritize safety when riding your BMX bike. Failure to follow safety guidelines can result in serious injury or damage to the bicycle.

• Wear a Helmet: Always wear an approved bicycle helmet that fits correctly.
• Protective Gear: Consider wearing additional protective gear such as knee pads, elbow pads, and gloves, especially when performing tricks or riding in challenging environments.
• Pre-Ride Check: Before each ride, inspect your bike for loose parts, proper tire pressure, and functional brakes. Ensure all quick releases are securely fastened.
• Brake Function: Verify that both front and rear brakes engage effectively and smoothly.
• Visibility: Use lights and reflectors when riding in low-light conditions. Wear bright clothing to enhance visibility.
• Traffic Laws: Obey all local traffic laws and regulations.
• Rider Skill: Ride within your skill level. Do not attempt advanced maneuvers without proper training and protective gear.
• Professional Assembly: If you are unsure about any assembly or adjustment steps, consult a qualified bicycle mechanic.

3. Setup and Assembly

Your AVASTA Rubato 20" Pro BMX bike is 85% pre-assembled. The remaining assembly steps are straightforward and can be completed with the included assembly tool. It is recommended to have a second person assist during some steps.

Components to Assemble:

1. Handlebars
2. Front Wheel
3. Seat Post and Saddle
4. Pedals
5. Pegs (if not pre-installed)

General Assembly Steps:

• Carefully remove all packaging materials.
• Attach the handlebars to the stem, ensuring they are centered and tightened securely.
• Install the front wheel, making sure it is properly aligned in the fork and the axle nuts are tightened.
• Insert the seat post into the frame and adjust the saddle height. Secure with the quick-release lever or bolt.
• Thread the pedals into the crank arms. Note that pedals are side-specific (L for left, R for right).
• Install the four BMX pegs onto the axles as desired.
• Perform a thorough safety check as outlined in Section 2.

Image: Diagram illustrating key features of the AVASTA Rubato BMX bike, including the ergonomic seat, durable steel frame, brake cable detangler for 360° bar spins, front and rear aluminum U-brakes, steel chainring (36T), and cool BMX pegs.

4. Operating Instructions

Understanding the controls and features of your BMX bike is crucial for safe and effective riding.

Braking System:

The bike is equipped with front and rear aluminum U-brakes, operated by hand levers on the handlebars. The U-brake design provides reliable stopping power. Always use both brakes simultaneously for controlled deceleration and stopping.

Gyro System:

The Rubato 20" Pro model includes a professional gyro system. This mechanism allows the handlebars to rotate 360 degrees without tangling the brake cables, which is essential for performing freestyle tricks.

Drivetrain:

The bike features a single-speed drivetrain with a 165 mm one-piece crank and a 36T steel chainring. This setup is optimized for BMX riding, offering a balance of speed and torque for various maneuvers.

Image: Close-up view of the single-speed drivetrain of the AVASTA BMX bike, showing the 165mm one-piece crank and 36T chainring.

BMX Pegs:

Four BMX pegs are included. These can be installed on the front and/or rear axles, providing additional foot placement options for grinding, balancing, and other freestyle tricks.

5. Maintenance

Regular maintenance ensures the longevity and safe operation of your AVASTA BMX bike.

General Cleaning and Storage:

• Clean your bike regularly with mild soap and water. Avoid high-pressure washers.
• Dry the bike thoroughly after cleaning to prevent rust.
• Store the bike in a dry, sheltered area away from direct sunlight and extreme temperatures.

Brake Adjustment:

• Check brake lever travel: Levers should stop about halfway to the handlebar when fully squeezed.
• Adjust cable tension using the barrel adjusters on the brake levers or at the brake calipers.
• Ensure brake pads are aligned with the rim and not rubbing the tire. Replace worn pads.

Chain Maintenance:

• Keep the chain clean and lubricated with bicycle-specific chain lubricant.
• Check chain tension; it should have about 1-2 cm of vertical play. Adjust by loosening axle nuts and sliding the wheel back or forward.

Tire Care:

• Maintain recommended tire pressure (indicated on the tire sidewall).
• Inspect tires for cuts, cracks, or embedded debris.

Bearing Check:

The bike features sealed bearings in the rear hub. Periodically check for any play or roughness in the wheels, headset, and bottom bracket. If issues are detected, professional service may be required.

Regular Inspections:

Periodically check all bolts, nuts, and fasteners for tightness. Ensure the seat post and handlebar stem are securely clamped.

6. Troubleshooting

This section addresses common issues you might encounter with your BMX bike.

Loose Handlebars/Stem:

• Symptom: Handlebars rotate independently of the front wheel, or the stem feels loose.
• Solution: Tighten the stem bolts (usually 4 bolts on the faceplate and 1 top cap bolt) securely. Ensure the handlebars are aligned with the front wheel before tightening.

Brakes Not Engaging Properly:

• Symptom: Brake levers feel spongy, or the bike doesn't stop effectively.
• Solution: Check brake cable tension and adjust using barrel adjusters. Ensure brake pads are not worn out and are properly aligned with the rim. Clean rims and brake pads if dirty.

Chain Slipping or Falling Off:

• Symptom: Chain comes off the chainring or cog, or skips under pressure.
• Solution: Check chain tension (refer to Maintenance section). Ensure the rear wheel is properly aligned in the dropouts. Inspect chain and sprockets for wear.

Pedals Loosening:

• Symptom: Pedals feel wobbly or unscrew during riding.
• Solution: Re-tighten pedals firmly. Remember that the left pedal has a reverse thread.

For any issues not covered here or if you are unsure about a repair, it is recommended to consult a professional bicycle mechanic.

7. Specifications

Detailed specifications for the AVASTA Rubato 20" Pro BMX Freestyle Bike:

Image: Diagram illustrating the geometric measurements of the AVASTA Rubato 20" Pro BMX bike, including chain stay, seat tube angle, top tube length, bottom bracket height, standover height, and head tube angle.

8. Warranty Information

The AVASTA Rubato 20" Pro BMX Freestyle Bike is covered by a limited lifetime warranty. This warranty typically covers manufacturing defects in the frame and fork for the lifetime of the original owner. Components may have a separate, shorter warranty period. Please retain your proof of purchase for warranty claims. For specific details regarding coverage and terms, refer to the warranty documentation included with your product or contact AVASTA customer support.

9. Support

If you have any questions, require assistance with assembly, or encounter issues not covered in this manual, please contact AVASTA customer support or the retailer from whom you purchased the bicycle. Provide your model name (Rubato 20 Pro) and ASIN (B0DMF52D67) when seeking support to ensure efficient service.