1. Киришүү
Thank you for choosing the ROCKBROS MBS 20-Inch Folding Bike. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your new bicycle. Please read this manual thoroughly before your first ride and keep it for future reference. Proper understanding and adherence to these instructions will ensure a safe and enjoyable cycling experience.
2. Продукт бүтүп калдыview
The ROCKBROS MBS 20-Inch Folding Bike is designed for portability and convenience, featuring a lightweight aluminum frame and an efficient Shimano 8-speed drivetrain. It is suitable for commuting, recreational rides, and travel.
Негизги өзгөчөлүктөрү:
- Жеңил алюминий каркас: Weighing approximately 25 lbs, the aluminum alloy frame is 30-40% lighter than traditional steel frames, enhancing portability.
- Компакттуу бүктөлүүчү дизайн: Folds quickly to a compact size of 31.49" × 27.56" × 14.57" for easy storage and transport.
- Shimano 8-Speed Drivetrain: Provides smooth and precise gear changes for various terrains.
- V-Brakes: Front and rear V-brakes offer reliable stopping power.
- Жөнгө салынуучу компоненттер: Seat post and handlebar are adjustable to accommodate riders from 4'7" to 6'1" (140-185 cm) and support up to 220 lbs.
- 20-Inch Wheels: Optimal size for urban environments and portability.

Image: The ROCKBROS MBS 20-Inch Folding Bike is lightweight and easy to carry, demonstrated by a woman effortlessly carrying it up stairs.

Image: The ROCKBROS MBS 20-Inch Folding Bike in use, highlighting its design for urban commuting and leisure.
Продукт бүттүview Video
Video: This video provides a brief overview of the ROCKBROS MBS 20-Inch Folding Bike, showcasing its lightweight and portable design.
3. Орнотуу жана чогултуу
Your ROCKBROS MBS 20-Inch Folding Bike comes mostly pre-assembled. Follow these steps for final setup before your first ride.
Кутудан чыгаруу жана алгачкы текшерүү
- Велосипедди таңгагынан этияттык менен чыгарыңыз.
- Inspect all components for any signs of damage during shipping. Contact customer support immediately if you find any issues.
- Бардык коргоочу таңгактоочу материалдарды алып салыңыз.
Кутудан чыгуучу видео
Video: This video demonstrates the unboxing process of the ROCKBROS MBS 20-Inch Folding Bike, guiding you through initial setup steps.
Adjusting Seat Post and Handlebar
- Отургуч билдирүү: Loosen the quick-release lever on the seat post clamp. Adjust the seat height so that your leg has a slight bend at the knee when the pedal is at its lowest point. Ensure the seat post is inserted past the minimum insertion line. Securely close the quick-release lever.
- Рул: Loosen the quick-release lever on the handlebar stem. Adjust the handlebar height to a comfortable position, ensuring it is aligned straight with the front wheel. Securely close the quick-release lever.

Image: Detailed dimensions and specifications of the bike, including recommended rider height and maximum load capacity.
Usage Instructions Video
Video: This video provides detailed instructions on how to use and adjust the ROCKBROS MBS 20-Inch Folding Bike, including folding and unfolding.
4. Иштөө нускамалары
Велосипедди ачуу
- Place the folded bike on a flat surface.
- Release the frame latch (usually located in the middle of the main frame).
- Unfold the frame until it locks into place. Ensure the latch is securely fastened.
- Unfold the handlebar stem and secure its quick-release lever.
- Adjust the seat post and handlebar to your preferred riding height.
- Unfold the pedals if they are foldable.
Велосипедди бүктүрүү
- Отургучтун мамычасын эң төмөнкү абалга түшүрүңүз.
- Fold the pedals inward if they are foldable.
- Release the quick-release lever on the handlebar stem and fold the handlebar down.
- Release the main frame latch and fold the bike in half. Ensure the frame is securely latched in the folded position.

Image: The bike's compact folded size allows for easy storage in a car trunk or on public transport.
Gear Shifting (Shimano 8-Speed)
Your bike is equipped with a Shimano 8-speed drivetrain for efficient pedaling across different terrains.
- Тиштүү дөңгөлөктү алмаштыруу үчүн оң рулдагы которгучту колдонуңуз.
- Shift to a lower gear (larger cog on the rear wheel) for easier pedaling on inclines.
- Shift to a higher gear (smaller cog on the rear wheel) for faster speeds on flat or downhill sections.
- Always pedal lightly when shifting gears to ensure smooth transitions and prevent damage to the drivetrain.

Image: Detail of the Shimano 8-speed system, ensuring smooth gear changes.
Braking (V-Brakes)
The bike features V-brakes on both the front and rear wheels.
- Оң рычаг арткы тормозду, ал эми сол рычаг алдыңкы тормозду башкарат.
- Apply both brakes simultaneously for controlled stopping.
- Avoid sudden, hard application of the front brake, especially at high speeds, as this can cause loss of control.
5. Техникалык тейлөө
Regular maintenance is crucial for the longevity and safe operation of your bicycle.
Жалпы кам көрүү
- Тазалоо: Regularly clean your bike with mild soap and water. Avoid high-pressure washers, which can force water into bearings.
- Майлоо: Keep the chain clean and lubricated with appropriate bicycle chain lubricant. Lubricate every 100-150 miles or after riding in wet conditions.
- Шина басымы: Check tire pressure before each ride. Maintain the pressure recommended on the tire sidewall.
- Болт текшерүү: Periodically check all bolts and quick-release levers to ensure they are securely tightened.
Brake and Gear Adjustment
- Тормоздор: Ensure brake levers engage smoothly and the brake pads make full contact with the wheel rim. Adjust cable tension if brakes feel too loose or too tight.
- Gears: If shifting becomes rough or gears skip, the derailleur may need adjustment. Consult a professional bike mechanic if you are unsure.
6. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Flat Tire | Puncture, low pressure | Inspect tire for punctures, repair or replace inner tube, inflate to correct pressure. |
| Тиштүү дөңгөлөктөр жылмакай которулбайт | Cable tension, dirty chain, bent derailleur | Clean and lubricate chain. Check shifter cable tension. Consult a mechanic if derailleur is bent. |
| Тормоз алсыз сезилет | Worn pads, loose cable, dirty rims | Check brake pad wear and replace if necessary. Adjust brake cable tension. Clean wheel rims. |
| Squeaking/Creaking Noises | Loose components, dry chain, unlubricated parts | Check all bolts and quick releases. Lubricate chain and pivot points. |
7. Техникалык шарттар
| Өзгөчөлүк | Спецификация |
|---|---|
| Велосипед түрү | Катталма велосипед |
| Wheel Size | 20 дюйм |
| Frame Material | Алюминий эритмеси |
| Ылдамдыктын саны | 8 (Shimano Drivetrain) |
| Тормоз стили | V Brake (Front & Rear) |
| Суспензия түрү | Катуу |
| Салмагы | Болжол менен 25 фунт (11.34 кг) |
| Максималдуу салмак боюнча сунуш | 220 фунт (100 кг) |
| Минималдуу колдонуучунун бийиктиги | 4'7" (140 см) |
| Ат минүүгө арналган жер | Paved Roads |
| Бүктөлгөн өлчөмдөрү (L x W x Y) | 31.49" x 27.56" x 14.57" (80см x 70см x 37см) |
8. Коопсуздук маалыматы
Always prioritize safety when riding your bicycle.
- Ар дайым коопсуздук стандарттарына жооп берген туулга кийиңиз.
- Ensure all quick-release levers and bolts are securely tightened before each ride.
- Check tire pressure, brakes, and steering before every ride.
- Коргонуу чараларын көрүңүз жана айланаңыздагыларга, анын ичинде жол кыймылына жана жөө жүргүнчүлөргө көңүл буруңуз.
- Use appropriate lighting (front and rear) when riding in low-light conditions or at night.
- Бардык жергиликтүү жол мыйзамдарына жана эрежелерине баш ийиңиз.
- Спирт ичимдиктерин же баңгизаттарды колдонуудан алыс болуңуз.
- 220 LBS (100 кг) максималдуу салмак сунушунан ашпаңыз.
9. Кепилдик жана колдоо
ROCKBROS products are designed for quality and durability. For specific warranty details, please refer to the warranty card included with your purchase or visit the official ROCKBROS website. If you encounter any issues or require technical assistance, please contact ROCKBROS customer support through the retailer where you purchased the bike or via the contact information provided on the official ROCKBROS webсайт.