Lost Manuel to bell f20 bike computer, non wireless. Need the wheel size codes to recalibrate it.

Your "question" is too cryptic to understand clearly, but if you actually mean "I need the figure to input for wheel size for a 28 inch wheeled bike on an Orion bike computer," then try one of the many suggestions below:
bike computer wheel size Google Search

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

You are correct, the Bell Wirless Speedometer doesn't appear to go above 27" for road bikes and 28" for mountain bikes.

You can find the manual (with programming directions) here: http://www.bellbikestuff.com/pdfs/111741WirelessManual.pdf

2124

go here:
http://www.huffybikes.com.au/index.php?module=product-detail&product=11
and contact Huffy. They can email you another manual

Somewhere in the configuration program is the option; if you can't find it it in the instructions, that's probably because it doesn't have this option, in which case, you should try and trade the bike comp. off for an American-built one. (guaranteed to have MPH)

buy a new calculater for it

Did an obsessive search of this problem and found this: "Right Button" . . . click to display the "DST" (distance) than hold the "LEFT Button" for 2 seconds. YEAH!! Reset trip ONLY!! This problem is simply an error in the instruction manual. ~G~

when i first got mine it prompted me to enter the circumference of my tire in millimeters (mine was 2074mm). you can get back to this by holding the bottom button in the center (this button is really two buttons one on the left side the other on the right side; holding the center pushes both these buttons). when it rests you'll see the 4 digit numbers. i think u use the right button to change the number and the left to move to the next. remember the number represents your tires circumference in millimeters. for a quick approx use this calculation (Tire Diameter)X(3.14)X(25.4). So for me it was (26in)X(3.14)X(25.4) = 2074mm

Here are some things the book doesn't tell you:
You have to completely reset the speedometer and lose your odometer to reset the MPH. Hold both buttons for 3 secs to get reset. (Remember to use the left button to walk through the setup process and use the right button to change the settings.) First set the wheel size using Ideluna's settings above on this page (right button to change the setting and left button to go to next number). Next is MPH/KPH, after wheel size setting, push left button again and km flashes. Push right button to change the setting to MI. Next is TIME. Push left button and you'll see the time. Hold down left button till 24hr appears. Push right button to change to 12hr. Then push left button to go to flashing hour. Change with right button. Then left button to go to flashing minute. Right button to change minute, hold down to change minutes fast. Now you are set up. Now the process changes, use the right button to walk through the menu and use the left button to reset. Don't push both buttons anymore unless you want to reset everything again. If you want to reset something just hold the left button down until 0. When you are in SCAN mode, push the right button to go to Time, To go back to SCAN once, hold the right button down - It will scan everything once and return to TIME. To go to ODO, push right button once, push again for DST, push again for MXS, push again for AVS, push again for TM, push again for SCAN to stay in SCAN.

here are the wheel value for a Bell F20

Road Bike
20" 1596
22 1759
24 1916
26 2073
27 2124

Montain Bike
24" 1888
26 2045
27 2155
28 2237

I hope this helps set your F20 computer.