HAPPYRUN G50 48V18Ah Electric Bike Instruction Manual

1. セットアップと組み立て

Carefully unpack and assemble your HAPPYRUN G50 Electric Bike by following these steps. It is recommended to have a clean, open workspace.

1.1 開梱と初期検査

Remove the electric bike from its packaging. Inspect all components for any signs of damage during transit. Ensure all parts listed in the packing list are present.

The video above provides a visual guide for unboxing and assembly. Pay close attention to the packaging removal and component identification.

1.2 ハンドルバーの取り付け

Attach the handlebars to the stem. Ensure they are centered and aligned correctly before tightening the bolts securely using the provided M5 Allen wrench. Adjust to a comfortable riding position.

Image: Excellent Shifting Performance. This image shows the 7-speed thumb shifter and 7-speed cassette with rear derailleur, which are part of the handlebar assembly.

1.3 Front Wheel and Fender Attachment

Install the front wheel into the fork. Ensure the disc brake rotor is correctly seated within the caliper. Attach the front fender using the provided hardware. Secure all bolts firmly.

Image: Front wheel and fender. The image displays the front wheel with its fat tire and fender, ready for installation.

1.4 ペダルの取り付け

Identify the left (L) and right (R) pedals. Thread the pedals into their respective crank arms. The left pedal threads counter-clockwise, and the right pedal threads clockwise. Tighten them securely with a wrench.

1.5バッテリーの取り付けと接続

Insert the 48V 18Ah lithium battery into its housing on the bike frame. Ensure it clicks securely into place. Connect any necessary power cables as indicated in the manual. The battery is removable for convenient charging.

Image: Removable Long-Lasting Battery. This image highlights the 48V 18Ah battery with BMS protection, offering up to 68 miles range.

1.6 タイヤの空気圧

Inflate both 20" x 4.0" fat tires to the recommended pressure, typically around 20 PSI, as indicated on the tire sidewall. Use a bicycle pump with a pressure gauge.

Image: 20x4.0" All-Terrain Fat Tires. This image showcases the robust fat tires suitable for various terrains including urban, trail, sand, and snow.

2. 操作手順

Familiarize yourself with the controls and riding modes for optimal performance and safety.

2.1 電源のオン/オフとディスプレイ

To power on the bike, press and hold the power button on the LCD display. The intuitive LCD digital display will show speed, mileage, battery level, and current mode. Press and hold again to power off.

Image: LCD Central Display. The display shows speed, riding time, mileage, and remaining battery, with IPX4 water resistance and 3 modes.

2.2 ライディングモード

The HAPPYRUN G50 offers three working modes:

• ライディングモード: Standard pedal cycling without electric assist.
• PASモード（ペダルアシストシステム）： Provides electric assistance while pedaling, extending range up to 68 miles.
• 純電気モード: Uses the throttle for full electric power, offering a range of up to 30 miles.

Image: 3 Modes Meet Different Needs. This graphic explains the Riding Mode, PAS Mode (68+ Miles), and Pure Electric Mode (30+ Miles).

2.3 ギアチェンジ

Utilize the Shimano 7-speed gear shift system to adapt to different terrains and riding conditions. Shift gears smoothly to maintain an efficient pedaling cadence.

Image: Excellent Shifting Performance. This image shows the 7-speed thumb shifter and 7-speed cassette with rear derailleur.

2.4 ブレーキシステム

The bike is equipped with disc brakes for reliable stopping power. Apply both front and rear brakes gently and evenly to slow down or stop. Avoid sudden, hard braking, especially with the front brake, to prevent loss of control.

3. メンテナンス

定期的なメンテナンスにより、電動自転車の寿命が長くなり、安全に運転できるようになります。

3.1バッテリーケア

• 初めて使用する場合と毎回乗る場合は、バッテリーを完全に充電してください。
• バッテリーを完全に使い切らないでください。
• バッテリーを使用しないときは、涼しく乾燥した場所に保管してください。
• バッテリーを極端な温度にさらさないでください。

3.2 タイヤの空気圧

Check tire pressure regularly before each ride. Maintain the recommended pressure (approx. 20 PSI) for optimal performance and to prevent punctures.

3.3 清掃と保管

• dでバイクを掃除してくださいamp 布と中性洗剤で拭いてください。電気部品に直接高圧洗浄するのは避けてください。
• Store the bike in a dry, secure location, away from direct sunlight and extreme weather conditions.

3.4 Brake and Gear Inspection

Periodically inspect brake pads for wear and ensure brake levers are responsive. Check the gear system for smooth shifting and proper chain tension. Adjust as needed or consult a professional.

4。 トラブルシューティング

このセクションでは、発生する可能性のある一般的な問題に対する解決策を示します。

4.1 バイクの電源が入らない

• バッテリーが完全に充電され、正しく取り付けられていることを確認してください。
• Check that the battery is securely locked into the frame.
• Verify all electrical connections are firm and undamaged.

4.2 モーターがアシストしない

• Confirm the bike is in PAS mode or Pure Electric mode.
• ディスプレイでバッテリーレベルを確認してください。
• Ensure the brake levers are not partially engaged, as this can cut motor power.

4.3 異常な音

• チェーンの潤滑と張力が適切かどうかを検査します。
• Check for loose components, especially around the wheels, pedals, and handlebars.
• Examine brake rotors and pads for rubbing or misalignment.

5. 仕様

Image: Bike Weight and Load Capacity. This graphic provides key dimensions and weight limits for the bike.

6. 保証とサポート

HAPPYRUN offers a 1-Year Warranty against manufacturer defects. For any queries or support, please contact our customer service team. We aim to respond within 24 hours.

Please retain the original packaging for at least one month in case of a return.