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1. Press the MODE button to move between all functions in  

    sequence as “     ” from one function screen to another when the .

    speed sensor does not detect any signal input. 

2. Press the MODE button to move partial functions in loop sequence  

    as “      ”when speed sensor detects signal input.

BUTTON OPERATIONS

MODE BUTTON

Gear Indicator Tranning Operations:

Optional Remote Control Switch for LAP timer

1. Setup operations include 12/24hour clock, bar rpm scale, shift warning 

    RPM, numbers of engine rotation per signal, wheel circumference, signal 

    divider, units, maintain reminder, units of temperature,      temperature 

    warning, fuel meter input resistance selection and odometer adjustment. 

    These must be set up step by step. The computer will be automatically 

    revert to normal mode if no button is pressed for 75 seconds at any 

    setting screen.

Clock, RPM, Wheel, Divider, Unit, Maintain, Thermometer, fuel meter and ODO SET UP

T

i

re S

i

ze

Circumference 

number 

(mm)

T

i

re S

i

ze

Circumference

number 

(mm)

T

i

re S

i

ze

Circumference 

number 

(mm)

23 inch
24 inch
25 inch
26 inch

19 inch
20 inch
21 inch
22 inch

15 inch
16 inch
17 inch
18 inch

1835
1915
1995
2075

1516
1596
1676
1756

1197
1277
1357
1436

WHEEL CIRCUMFERENCE TABLE

1. The details below have been calculated using following formula: Tire 

    Diameter (inches) x 25.4(mm/inches) x 3.1416 = wheel circumference 

    (in mm).

2. Identify the tire size of your ATV/Motorcycle when you need to change 

    different tire size and key in the corresponding number shown in the 

     following chart. 

3. These values are approximate and will differ for different brands of   

     tyre, we would always recommend that you measure the distance 

     travelled per revolution of the wheel in mm and enter this into the 

     computer.

4. The computer calculates the wheel rotating length between 2 passes   

    of the magnet; use this table to find the settings when you are using a  

    reed sensor or an universal hall sensor with magnet to measure your    

    speed. 

5. If you are using a cable drive speed sensor then enter the number of     

    turns of the cable perf the wheel into the pulses screen. 

6. You can use more magnets, enter the number of magnets fitted into 

     the pulses screen. 

7. If using a sprocket tooth counter speed sensor or internal pulse 

    gearbox speed sensor enter the number of pulses per wheel 

    revolution into the pulses screen. 

2. Press both MODE & RESET buttons to go into setting mode. In setting  

     mode, each press of the RESET button increments the flashing digit by 1 

     or converts units. Press MODE button to confirm the digit setting and 

     jump to next digit or next setting screen to be set. Press MODE button for 

    2 seconds at any setting screen to finish the setting and go to normal mode.

Shift Warning RPM Operation

1.  Press MODE button to the RPM screen; pull on the throttle until 

     the desired shift warning RPM.  

2. Press RESET button to confirm and set up the shift warning RPM. 

3. Bar-graphic tach ometer and warning LED will flash to warning you 

     shift gear. 

4. Press RESET button for 2 seconds at the RPM screen to re-adjust 

     the shift warning RPM. 

RESET BUTTON

Reset button cycles through functions in reverse order

DATA RESETTING AND PROGRAMMING MODES

1. Press MODE or RESET button to reach the desired screen then 

    press RESET button for 2 seconds to reset TRIP 2, MAX SPD, MAX 

    RPM and MAX   data from stored values to zero individually. The 

    maintain reminder  data will be reset to the preset value rather 

    than zero. 

2. The data of Trip 1, AVG & RT will all be reset at the same time when 

    one of the 3 data functions is being reset.   

3. ODO, clock, HRTT and TT data cannot be reset. 

4. Gear indicator flashes the default 0 gears.

5. Press RESET button to select the number of gear, user can select 4-8 gears or 

    “0” to disable the gear function. 

6. Press MODE button to confirm the number of gears and go to the number 

     gear ratio setting mode.

7. It displays and flashes “1”, shift bike’s gear to the 1st gear, run the engine to 

    between 2000-4000RPM.

  8. Hold the speed and the RPM for about 5 seconds until the “-“flashing. The 

      flashing “-“after the gear “1” means the 1st gear be set.

  9. Press MODE button to confirm the set and go to the 2nd gear setting. 

10. It displays and flashes “2”, shift bike’s gear to the 2nd gear, run the engineto 

      between 2000-4000RPM.

11. Hold the speed and the RPM for about 5 seconds until the “-“flashes. The 

       flashing “-“after the gear “2” means the 2nd gear is set.

12. Press MODE button to confirm the setting and go to next gear setting.

13. Repeat the same operations as items 11-14 to set other gears until the last 

       gear is set. Press MODE button to return to normal mode.  

14. At gear indicator setting mode, press and hold MODE button for 2 seconds 

      to abort the setting if you need to re-set at any setting screen.

1. The remote control switch has 2 buttons: MODE and LAP. The MODE button 

    has the same function as on the main unit. 

2. Press and hold the LAP button for 2 seconds to go into the LAP mode. 

3. LAP Record operations: 

a. In LAP mode, press LAP button to convert start or stop the LAP recording 

     function, each press of MODE button records a set of data LAP and 

    displays LAP timer for 3 seconds then changes display to speed mode 

    automatically, press and hold the LAP button for 2 seconds to go out LAP 

    mode and return to normal mode. 

b. The first data of recording function will be renewed by new data when lap 

     exceeds 99 laps, then each new data renews earliest data one by one. 

LAP review operations: 

1. In the LAP mode, press MODE button to review the 1st stored data, it 

    displays number of lap and lap timer. 

2. Press the RESET button to switch between lap timer of the same LAP; each 

    press of the MODE button displays data for the next lap. 

3. Press and hold LAP buttons for 2 seconds to go out LAP mode and return to

    normal mode. 

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

       Follow the item 2 to set sensor type of LAP timer and jump to freezing 

       time setting.

20. **It displays flashing 01 and SEC, the range is from 01 to 20 seconds, 

       the freezing time setting will ignore signals received by the unit within 

       the set freezing time after it received a signal. Follow the item 2 to set 

       freezing time and jump to odometer setting.   

21. It displays “ODO & 00000X km”, the “X” is from odometer testing in 

      factory, follow item 2 to set a desired odometer value and jump to 

      clock setting or return to Normal Mode. This setting screen will 

      disappear when the odometer is over 30km (18.6Miles) or your setting 

      is over 30km

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

**

**

**

Mode

2 sec.

RESET

Mode

+

2 sec.

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

Mode

RESET

2SEC

 3. It displays "12 or 24H and XX:XX:XX " symbols and  AM/PM when you    

     select 12H. Operate buttons as described in item 2 to finish clock 

     setting and jump to shift RPM warning setting. 

4. It displays the default "RPM r06500", the digit “0” flashes. Follow the 

    item 2 of button operation to finish the shift RPM warning setting and  

    jump to engine specification setting.

5. It displays "RPM SP 1r1P", the default value is 1r1P; there are 6 options: 

    1r1P, 1r2P, 1r3P, 1r4P, 2r1P, 3r1P,. “r” means the numbers of 

    enginerotation, “P” means number of signals from engine. For example 

    the value 2r1P means the engine rotates 2 turns to output one signal.

6. Press RESET button to move in loop sequence from one to another 

    value of the 6 values. Press MODE button to confirm the setting and go 

    to speed sensor type screen.

7. It displays SPD SEn HALL or SPD SEn rEEd, HALL type is for Acewell's 

    unique 2 wires hall sensors only, rEEd type is for reed sensors, gear 

    sensors and signals from ECU. A gear sensor has 3 wires and must be 

    powered from the bike. Follow item 2 of button operation to confirm 

    the sensor type and jump to wheel circumference setting screen.

8. In "SPD cXXXX" display, "c" means "Circumference", following 4 default 

    digits; flashing digit is digit to be set. Follow the item 2 of button 

    operation to finish the wheel circumference setting and jump to signal 

    divider setting.

9. It displays "SPD P-001", the pulses screen, the number of pulses into the 

    computer per turn of the wheel. Follow item 2 of button operation to 

    finish the setting and jump to unit setting. 

10. It displays KM/H or MPH, each press of RESET button converts unit; 

       press MODE button to confirm unit setting and jump to decimal point 

       setting.

11. It displays “99.9Km/H SPD & on” or “99Km/H SPD & oFF”, the decimal 

      point will disappear when Off is selected. Follow the item 2 of button 

      operation to finish the decimal setting and jump to maintain reminder 

      setting.

12. It displays     and TRIP, RT or oFF, TRIP is 1000km (621Miles) and RT is 

      100 hours by default. Follow the item 2 of button operation to finish 

      the maintenance reminder setting and jump to voltage warning setting. 

      The maintenance reminder function will be not be shown when “OFF” 

      is selected.

13. It displays “      b-on and a flashing numbers of voltage” to be set, “b-on” 

      means battery warning on voltage – when the voltage falls below this 

      the LED will flash, setting range from 11.0 to 15.0V. It displays “  

      b-off and a flashing numbers of voltage”, “b-off” means battery 

      warning off voltage, setting range from 11.0 to 15.0V to, but        b-off 

      voltage must larger than b-on voltage – when this voltage is exceeded 

      the LED will go off. It displays “     b-HI and a flashing numbers of voltage” 

      to be set, “b-HI” means battery warning on voltage – when the voltage 

      is exceeded the LED will come on, setting range from 11.0 to 15.0V“. 

      Follow the item 2 of button operation to finish the voltage warning 

      setting and jump to thermometer 1 setting.

14. It displays "   1

°C

°F

 or oFF", each press of RESET button converts ,

°C

 or 

°F

 

      Off, the temperature bars will disappear when you select oFF mode; 

      press MODE button to confirm temperature setting and jump to 

      temperature 1 warning setting.

15. It displays "    1 XXX" and the selected unit. Follow the item 2 of button 

      operation to finish the temperature warning setting and go to 

      thermometer 2 setting. 

16. thermometer 2 setting  It displays "**    2 

°C

 , 

°F 

or oFF", each press of 

      RESET button converts 

°C

°F

 or Off, press MODE button to confirm 

      temperature setting and jump to scan setting.

17. It displays SCAn and on or oFF, It displays “flash 01 & SCAn” if you 

      select Scan on, it means the time in seconds to display each function, 

      for example 05 means every 5 seconds auto change to the next 

      function, the set range is 01-20. Follow the item 2 of button operation 

      to finish the SCAN setting and go to fuel sensor resistance setting.

18. It displays “on, off or rES” and     , it displays fuel tank and full bars as

       well flash XXXXr, it means full tank resistance setting, the setting range 

       of “on” from 10r to 1000r. It displays fuel tank and one bar as well as 

       flash XXXXr, it means empty fuel sensor resistance setting. Follow the 

       item 2 to select a resistance same as your fuel sender and jump to 

       sensor type of **LAP timer setting. The fuel meter bar will disappear if 

       you select oFF mode. In “rES” mode connecting the input wire to 0v 

       can bring on the fuel symbol and/or LED indicator instantly.

 

19. It displays Ir, EF1, EF2 or EF3, Ir means you elect IR receiver as the 

       sensor for LAP timer, and the selection of EF1, 2 or 3 is a magnetic 

       field sensor for LAP timer, the number of 1, 2 or 3 is means the 

       number of magnetic sensor in track, for example EF2 means the track 

       has 2 magnetic sensor and it will combine 2 sensing signals in one. 

     

1. If using a rear wheel or gearbox speed sensor, put bike on a rolling road or  

    securely mounted centre stand, if measuring front wheel speed the following 

    can only be done if the vehicle is moving.

2. Change the LCD screen to display digital RPM.

3. Press and hold MODE button for 2 seconds to go into the number of gears 

    setting mode.

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