Acewell Speedometer

[arse-onist_imp]

From what you describe none of the functions are accurate but speedo and rev counter are functioning.
If it was me i would have tried to repair the original cluster or have some technical person look at it, it sounds like the processor has stopped due to water, the processor makes the dials swing.

Is the connector to the cluster still attached so the original or new unit can be re-connected?

Looking at the pdf there are several settings that have to be adjusted in the setup menu, i would start with the rev counter ;

From the pdf on page one;
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Mode
Clock, RPM, Wheel, Unit, Divider, Thermometer, fuel meter and ODO SETUP

5. It displays "RPM SPC-X.X", the default value is 1.0; there are 4 options:
1.0, 2.0, 3.0 and 0.5. It means the numbers of engine rotation per signal.
For example the value 2.0 means the engine rotate 2 turns to output a
signal. Follow the item 2 of button operation to finish the engine
specifications setting and jump to wheel circumference setting screen.
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Just play around with the four options in the menu and one of them should work.

this is the simplest one to do because you know that the rev's are 1500 rpm on startup, 1150 rpm when the engine is at operating temperature and you can adjust it whilst the bike is stationary.

Once this setting has it's correct option the rest may be better understood.

I managed to get the RPM sorted. The SPC settings is to be set at 0.5 instead of 1. Now if only we could do something about the fuel resistance and the speedometer..