Preparing the computer
Perform the All Clear operation, when you use the unit for the fi rst
time or restore the unit to the condition checked at the factory.
1
Clear all data (initialization)
Press the AC button on the
back of the computer.
AC
Tire circumference
There are the following ways to determine the
tire circumference.
• Measure the tire circumference (L)
Measure the distance when the tire turns right
round with your weight applied, while adjusting
the tire pressure appropriately.
L mm
2
Select the speed units
Select "km/h" or "mph".
km/h ↔ mph
MODE
Register the setting
MENU
• Refer to the tire circumference reference table
* Generally, the tire size or ETRTO is indicated on the side of the tire.
ETRTO
Tire size
L (mm)
ETRTO
47-203 12x1.75
935
50-406 20x1.95
54-203 12x1.95
940
28-451 20x1-1/8
40-254 14x1.50
1020
37-451 20x1-3/8
37-501 22x1-3/8
47-254 14x1.75
1055
40-305 16x1.50
1185
40-501 22x1-1/2
47-305 16x1.75
1195
47-507 24x1.75
54-305 16x2.00
1245
50-507 24x2.00
54-507 24x2.125
28-349 16x1-1/8
1290
37-349 16x1-3/8
1300
25-520 24x1(520)
32-369 17x1-1/4(369)
1340
40-355 18x1.50
1340
28-540 24x1-1/8
32-540 24x1-1/4
47-355 18x1.75
1350
32-406 20x1.25
1450
25-559 26x1(559)
35-406 20x1.35
1460
32-559 26x1.25
37-559 26x1.40
40-406 20x1.50
1490
40-559 26x1.50
47-406 20x1.75
1515
Dot section
3
Enter the tire circumference
Enter the front wheel tire circumference
of your bicycle in mm.
* Refer to the "Tire circumference refer-
ence table" as a guide.
Increase the value
MODE
Move digits
(Press & hold)
MODE
Register the setting
MENU
Tire size
L (mm)
ETRTO
Tire size
1565
47-559 26x1.75
1545
50-559 26x1.95
1615
54-559 26x2.10
1770
57-559 26x2.125
1785
58-559 26x2.35
1890
75-559 26x3.00
1925
28-590 26x1-1/8
1965
37-590 26x1-3/8
1753
37-584 26x1-1/2
24x3/4 Tubular
1785
650C Tubular
26x7/8
1795
1905
20-571 650x20C
1913
23-571 650x23C
1950
25-571 650x25C
2005
26x1(571)
2010
40-590 650x38A
STRADA SLIM
CC-RD310W
4
Set the clock
Pressing and holding the MODE button
switches the display to "Displayed time",
"Hour", and "Minute" in order.
12h ↔ 24h or increases
the value
MODE
Display format Switch-
ing "Hour" and "Minute"
(Press & hold)
MODE
Register the setting
(Finish)
MENU
L (mm)
ETRTO
Tire size
L (mm)
ETRTO
2023
40-584 650x38B
2105
32-622 700x32C
2050
25-630 27x1(630)
2145
2068
28-630 27x1-1/8
2155
35-622 700x35C
2070
32-630 27x1-1/4
2161
38-622 700x38C
2083
37-630 27x1-3/8
2169
40-622 700x40C
2170
40-584 27.5x1.50
2079
42-622 700x42C
1970
50-584 27.5x1.95
2090
44-622 700x44C
2068
54-584 27.5x2.1
2148
45-622 700x45C
2100
57-584 27.5x2.25
2182
47-622 700x47C
18-622 700x18C
2070
54-622 29x2.1
1920
19-622 700x19C
2080
56-622 29x2.2
1938
20-622 700x20C
2086
60-622 29x2.3
1944
23-622 700x23C
2096
25-622 700x25C
2105
1952
28-622 700x28C
2136
30-622 700x30C
2146
2125
ENG
2
Battery case cover
MENU
AC
MODE
Display format
Display format
Hour
Minute
Minute
Tire size
L (mm)
2155
700C Tubular
2130
2168
2180
2200
2224
2235
2242
2268
2288
2298
2326