1. Introducció
Welcome to the user manual for your new Gotrax Dolphin 26" Electric Bike. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your electric bicycle. Please read this manual thoroughly before your first ride to ensure optimal performance and safety.
The Gotrax Dolphin Electric Bike is designed for urban commuting and recreational riding, offering a blend of traditional cycling and electric assistance. It features a robust aluminum frame, a powerful motor, and multiple pedal-assist levels to enhance your riding experience. This product is UL2849 safety certified, ensuring adherence to high safety standards.
2. Informació de seguretat
Your safety is paramount. Always wear a helmet and appropriate safety gear when riding. Adhere to all local traffic laws and regulations. Perform a pre-ride inspection before each use, checking tire pressure, brake functionality, and battery charge level.
The Gotrax Dolphin Electric Bike is UL2849 certified, indicating compliance with electrical system safety standards for electric bicycles. However, this certification does not negate the importance of safe riding practices and regular maintenance.
For detailed safety guidelines and warnings, please refer to the official user manual PDF provided with your product or available for download from the Gotrax weblloc.
3. Contingut del paquet
Upon unboxing, please verify that all components are present and undamaged. The standard package for the Gotrax Dolphin 26" Electric Bike typically includes:
- Gotrax Dolphin Electric Bike (partially assembled)
- Bateria extraïble
- Carregador de bateria
- Tool Kit for Assembly
- User Manual (this document and/or PDF)
- Reflectors
If any items are missing or damaged, please contact Gotrax customer support immediately.
4. Muntatge i muntatge
The Gotrax Dolphin Electric Bike arrives mostly pre-assembled. The primary assembly steps involve attaching the front wheel, handlebars, pedals, and seat. Clear instructions and necessary tools are provided to facilitate this process.

Figure 4.1: Key components of the Gotrax Dolphin Electric Bike.
Muntatge pas a pas:
- Traieu amb cura la bicicleta i tots els components de l'embalatge.
- Attach the front wheel to the front fork, ensuring the quick-release skewer is securely fastened.
- Insert the handlebar stem into the fork tube and tighten the bolts. Adjust the handlebar angle for comfort.
- Attach the pedals. Note that pedals are typically marked 'L' for left and 'R' for right, and have different threading.
- Insert the seat post into the frame and adjust the seat height to your preference, ensuring the quick-release clamp s’estreny.
- Install the front and rear reflectors as per local regulations.
- Ensure all bolts and fasteners are securely tightened before your first ride.

Figure 4.2: Fully assembled Gotrax Dolphin Electric Bike.
5. Instruccions de funcionament
The Gotrax Dolphin Electric Bike offers versatile riding options with its electric motor and traditional bicycle components.
5.1 Modes de conducció
Your e-bike supports three distinct riding modes:
- Mode elèctric pur: Engage the throttle for motor-only propulsion. This mode allows for effortless cruising without pedaling.
- Mode d'assistència de pedals: The motor provides assistance as you pedal. This mode offers 5 different speed levels, allowing you to customize the level of assistance based on terrain and desired effort.
- Mode normal de bicicleta: Ride the bike like a traditional bicycle, with no motor assistance.

Figure 5.1: Performance metrics of the Gotrax Dolphin Electric Bike.
5.2 Mode Boost
For an extra push, especially when starting or going uphill, utilize the Boost Mode. Press and hold the designated button for 2-3 seconds to activate a 6 Km/h (3.7 mph) boost. Press any button to exit this mode.

Figure 5.2: Activating Boost Mode for easier uphill travel.
5.3 Gear System
The bike is equipped with a Shimano 7-speed gear system, allowing you to adjust your pedaling effort for various terrains. Selecting a lower gear minimizes strain on your legs, particularly on inclines.

Figure 5.3: The 7-speed gear system for versatile riding.
5.4 Bateria i càrrega
The 280.8Wh removable battery provides a range of up to 15.5 miles in pure electric mode and over 30 miles in pedal-assist mode 1. A full charge takes approximately 5.5 hours. The removable design allows for convenient charging both on and off the bike.

Figure 5.4: Removable battery for flexible charging.
6. Manteniment
Regular maintenance is crucial for the longevity and safe operation of your Gotrax Dolphin Electric Bike.
6.1 Atenció general
- Neteja: Netegeu la bicicleta amb un anunciamp drap després de cada trajecte. Eviteu utilitzar dolls d'aigua a alta pressió directament sobre els components elèctrics.
- Emmagatzematge: Store the bike in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, ensure the battery is charged to 50-70%.
6.2 Comprovacions de components
- Pneumàtics: Check tire pressure before each ride. Recommended pressure is typically indicated on the tire sidewall.
- Frens: Regularly inspect brake pads for wear and ensure brake levers provide firm and responsive stopping power. The bike features dual disc brakes for enhanced stopping ability.
- Cadena: Mantingueu la cadena neta i lubricada per garantir canvis de marxes suaus i evitar un desgast prematur.
- Elements de fixació: Periodically check all bolts and nuts for tightness, especially on critical components like handlebars, wheels, and seat.
7. Solució De Problemes
This section addresses common issues you might encounter with your Gotrax Dolphin Electric Bike. For more complex problems, please consult the official user manual or contact customer support.
| Problema | Causa possible | Solució |
|---|---|---|
| La bicicleta no s'encén. | La bateria no està carregada o no està ben col·locada. | Ensure battery is fully charged and securely inserted into the frame. Check power button. |
| Motor not engaging in electric or pedal-assist mode. | Throttle or pedal-assist sensor issue; brake levers engaged. | Ensure brake levers are fully released. Check connections to throttle/sensor. Restart the bike. |
| Brakes feel weak or make noise. | Worn brake pads; misaligned calipers. | Inspect brake pads for wear and replace if necessary. Adjust brake caliper alignment. |
| Sorolls inusuals durant el funcionament. | Components solts; cadena seca; problema amb el motor. | Check all fasteners. Lubricate the chain. If noise persists, seek professional assistance. |
8. Especificacions
Below are the technical specifications for the Gotrax Dolphin 26" Electric Bike:
| Característica | Especificació |
|---|---|
| Tipus de bicicleta | City Bike, Electric Bike |
| Interval d'edat (descripció) | Joventut, Adult |
| Marca | Gotrax |
| Nombre de velocitats | 7 |
| Color | Negre |
| Mida de la roda | 26 polzades |
| Material del marc | Alumini + ABS |
| Tipus de suspensió | Front Shock Absorbing Fork |
| Característica especial | 20Mph Max Speed, 30 Miles Max Range (Pedal-assist1), 5 Pedal-Assist Levels, Shimano 7-Speed, Three Cycling Modes |
| Components inclosos | Reflectors |
| Mida | 26 polzades |
| Estil de fre | Fre de disc dual |
| Pes de l'article | 22.2 quilos |
| Estil | 350w Black |
| Nom del model | Dofí |
| Font d'alimentació | bateria recarregable |
| Wattage | 350 watts |
| Material de la roda | Alumini |
| Contingut d'energia de la bateria de liti | 280.8 watts-hora |
| Tipus de material del seient | Vinil |
| Tipus de garantia | 365 dies |
| Recomanació de pes màxim | 264 lliures |
| Muntatge obligatori | Sí |
| Tipus de canvi de marxes per a bicicleta | Disparador |
| Nombre de nanses | 2 |
| Alçada mínima de l'usuari | 5.2 peus |
| Material del parafang | Alumini |
| UPC | 810132393570 |
| Bicycle Drivetrain Type | Cadena |
| Tipus d'assistència elèctrica | Pedal-Assist and Throttle-on-Demand |
| Fabricant | ZHE JIANG TAOTAO VEHICLES CO.,LTD |
| Dimensions del paquet de l'article L x W x H | 56.7 x 29.99 x 9.4 polzades |
| Pes del paquet | 24.27 quilos |
| Dimensions de l'article LxWxH | 70.1 x 27.2 x 46.1 polzades |
| Nom de marca | Gotrax |
| Descripció de la garantia | 365 dies |
| Material | Alumini |
| Usuaris suggerits | unisex-adult |
| Número de part | Endura-001 |
| ASIN | B0CG96T4MC |
| Data de primera disponibilitat | 22 d'agost de 2023 |

Figure 8.1: Gotrax Dolphin Electric Bike dimensions and weight specifications.
9. Garantia i Suport
Gotrax provides a 365-day part assurance for your Dolphin Electric Bike. If you encounter any issues or require assistance, please contact Gotrax customer support. We are committed to providing satisfactory after-sales service.
For further support and to explore other Gotrax products, visit the official Gotrax Store on Amazon.





