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Koso BB642W20 Instructions Manual page 5

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4
Entering setting screen
●In main screen, press and hold the Select &
Adjust button for 3 seconds to enter the
 
setting screen.
4-1
●EX. To connect the RPM signal wire to the
 
pick up signal and there are 13 flywheel
 
signals per turn.
●Press the Adjust button to change the setting.
●EX. Now the current input signal setting is 1.
The setting digit will flash!
NOTE
Setting
value
0.5
1
2
3
4
5
6
NOTE
For most of Injection Model, setting value might exceed 6 if RPM connection
method B is chosen, and it depend on the number of the bump it has on its flywheel.
CAUTION!
Most of the 4-cycle bikes with a single piston are igniting
every 360 degree, so the setting should be the same as the bike with
2-cycle and one piston engine.
●Press the Select button once to enter
the input pulse setting.
●Ex. To change the RPM input signal number
setting from 1 to 13.
●Ex.: To change the setting to Hi.
(The negative signal pulse.)
●Press the Adjust button to choose
waveforms you would like to set.
Now the pulse setting is flashing!
NOTE
NOTE
●Press the Select button once to
enter the tire circumference compensation
setting.
●EX.: To change the input pulse setting
from is Hi to Lo.
4-2
Reset this setting value when you
change to a different tire size.
●Ex: The new tire circumference is 130 cm.
Use the equation below.
●The new tire circumference ÷ the original tire
circumference X 100 = The value in %.
(130 ÷ 125 x 100 = 104%)
●Press the Select button and release
it until it move to the setting digit you want.
●Ex: The original setting is 1000.
Now the setting digit value is flashing!
NOTE
The RPM input signal setting
Setting range: 0.5,1 ~24.
2 strokes
4 strokes
RPM per spark
setting
setting
1 piston
2 RPM signals per 1 spark.
1 piston
2 pistons
1 RPM signal per 1 spark.
2 pistons
4 pistons
1 RPM signal per 2 sparks.
3 pistons
6 pistons
1 RPM signal per 3 sparks.
4 pistons
8 pistons
1 RPM signal per 4 sparks.
10 pistons
2 RPM signals per 10 sparks.
6 pistons
12 pistons
1 RPM signal per 6 sparks.
We define the RPM input pulse as Hi (The
positive pulse) & Lo (The negative pulse.)
If the RPM displayed on the meter is
incorrect or with noise, please choose
another setting and try it again.
The tire circumference
compensation setting
Setting range: 300~2500.
Setting unit: per 1 %.
P.S.
You can define the
valve as the starting
point and the terminal
point to measure the
wheel circumference
with a measuring tape.
●Then press the Adjust button to change
the setting value.
●Press the Select button to enter the
sensor point setting.
●Ex: To change the tire circumference setting
from 1000 mm to 1300 mm.
●Ex: To set the sensor point to 06P.
●Press the Adjust button to change the setting.
The sensor point setting is flashing!
NOTE
●Press the Select button to enter
the fuel resistance setting.
●Ex.: To change the sensor point from
01P~06P.
4-3
●EX. The fuel gauge need to be set to 510Ω
●Press the Adjust button to choose the setting
number.
NOTE
The fuel gauge resistance setting range:
100Ω、250Ω、510Ω、1200Ω
If you don't install the fuel wiring, the fuel
gauge will not be displayed.
NOTE
When Fuel Resistance Setting is changed,
the remaining Mileage will be reset to 0 and have
to restart the learning process. About the Learning
process please refer to the instruction from 3-5.
●Keep pressing the Select button once to enter
the clock setting.
●Ex.: To change the fuel resistance setting
from 100 to 510.
Setting range: 1~20 point.
The fuel resistance setting
wh642bb03b-P4-3

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