Echo J7 Cycle Computer Manual May 2026

The Echo J7 is a vintage, wired cycle computer known for its straightforward 7-function interface . While it is a legacy device, it remains valued for its simplicity and reliability, though users should be prepared for a slightly manual setup process. Echo J7 Key Features

• Common issues and solutions
• Cleaning and storing the device
• Updating software and firmware

• SPD (Speed): Current speed.
• ODO (Odometer): Total lifetime distance ridden.
• DST (Distance): Distance of the current ride. (Hold the Reset button to clear this to zero).
• TM (Time): How long you have been riding (stops when you stop).
• AVS (Average Speed): Calculated from your ride time vs. distance.
• **MXS (Maximum

The following diagrams illustrate the components and features of the Echo J7: echo j7 cycle computer manual

Sensor Mounting: Attach the sensor to the front fork using cable ties. It should face inward toward the spokes. The Echo J7 is a vintage, wired cycle

• Temperature display (°C or °F) – external sensor optional
• Automatic start/stop – stops timer when bike is stationary
• Scan mode – cycles through all functions every 4–5 seconds
• Battery saving – screen powers off after ~5 minutes of no movement

For reliable performance, follow these physical setup steps: Common issues and solutions Cleaning and storing the

1. Attach computer head to handlebar/stem using supplied bracket and ties; orient for easy reading.
2. Mount wheel sensor on fork so it faces the magnet on a spoke; typical clearance 1–5 mm.
3. Fix magnet to a spoke at the same height the sensor will pass.
4. Insert battery into computer and sensor if required; ensure polarity correct.
5. Wake/start the unit by spinning the wheel or pressing the button.
6. Set wheel circumference:
   • Common 700x23c road bike → 2096 mm
   • 26″ mountain bike → 2070 mm (or 2055 for knobby tires)
   • 27.5″ → 2190 mm
   • 29″ → 2320 mm