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

    when speed sensor detects signal input. 

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. 

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 per turn of 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. 

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. 

Shift Warning RPM Operation
1. Press MODE or RESET button to reach 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. Warning LED will flash to remind you shift gear. 
4. Press RESET button for 2 seconds at the RPM screen to re-adjust the shift 
    warning RPM. 
Backlight Color Adjust:  
1. Press MODE button to get to the VOLT screen when not moving; push and hold 
    RESET button for 2 seconds to go into backlight color setting mode. 
2. It displays “LED RGB and RX-GX-BX”, the X after R, G and B indicate each color of 
    Red, Green or Blue color to be adjustable, each color has 10 levels 0, 1, 2,.9 for 
    setting, “0” means the color is off, “9” means the color is turned on 100%. 
3. Each press of the RESET button increments the flashing digit by 1, press MODE 
    button to confirm the flashing digit setting and jump to next digit to be set. Press 
    MODE button for 2 seconds to finish the setting and go to normal mode Trip 1. 
Gear Indicator training operations:
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. 
4. Gear indicator flashes the default 0 gears.
6. Press RESET button to select the number of gear, user can select 4-8 gears or “0” 
     to disable the gear function. 
7. Press MODE button to confirm the number of gears and go to the number gear 
     ratio setting mode.
8. It displays and flashes “1”, shift bike’s gear to the 1st gear, run the engine to 
    between 2000-4000RPM.
9. 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.
10. Press MODE button to confirm the set and go to the 2nd gear setting. 
11. It displays and flashes “2”, shift bike’s gear to the 2nd gear, run the engine to 
       between 2000-4000RPM.
12. 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.
13. Press MODE button to confirm the setting and go to next gear setting.
14. 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.  
15. 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. 

Tire outside

 diameter

Tire outside

 diameter

Tire outside

 diameter

Circumference 

number 

(mm)

Circumference

number 

(mm)

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

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

1. Setup operations include 12/24hour clock, shift warning RPM, numbers of engine 

    rotation per signal, wheel circumference, speed pulses, units, decimal, 

    maintenance, battery warning, temperature unit and warning, fuel meter input 

    resistance selection, lap timer 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.

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.

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 5 options: 1r1P, 

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

    5 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, HRT 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 

 , 

  or HI, or oFF", each press of RESET button converts 

   ℉

 or 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. In “HI” mode connecting the input wire to ground can flash the   and/or 

      LED indicator.

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 

 , 

 or oFF", each press of RESET 

      button converts 

 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 odometer setting. The fuel meter bar will disappear   

      if you select oFF mode. In “rES” modeconnecting the input wire to 0v can bring 

      on the fuel symbol and/or LED indicator instantly.

19. 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. 

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