In this video you will learn how to check RPM meter if its not working . Before starting anything check the battery if its providing 12+ volt or not and also after starting the motorcycle you get 12+ volt output from the regulator to battery terminals.Once you done the voltage check you are good to go.
First let me tell you about the wiring and working of RPM meter because if you understand that then it will be easy for you to find out any problem if RPM meter is not working. Basically RPM meter are of two types mechanical and electrical , mostly electrical type of RPM meters used .RPM meter works on three wires 1) negative, 2) positive , 3) signal wire (pulsed dc voltage). If RPM meter is not working then you need to check these three wire for there corresponding works.
According to your motorcycle brand the color of these three wire may be different but the working will be the same.You can easily get the color code from your ignition switch socket one wire will be ground and have the battery negative and one wire which gets 12 volt after the ignition key turn to ON/START position will be the positive wire .Once you know the color for these two wires , we first check the negative wire with the help of a multi meter , set the multi-meter to continuity then connect one probe to the wire and other on the any body metal part ,if you get beep or reading then the wire is all good , if not then the wire must be cut somewhere and you need to repair it. 2nd we check the positive wire and do turn the key to ON/START position , set the multi-meter to 20 volt dc then connect one probe to wire and other to any body metal part and you should get 12 + volt reading , if not then the wire must be cut somewhere and you need to repair it.
Third wire which is signal wire can be found near the 1st ignition coil , the wire which is connected to the positive of the ignition coil will be the signal wire which basically carry the pulsed DC volt to the RPM meter and we get the reading . To check this wire set the multi-meter to continuity and then connect one probe to the positive wire of the ignition coil and other at the same color wire on the socket , if you get the beep and reading then the wire is good if not then the wire must be cut at somewhere and you need to repair it.
After doing all these tests if you find the problem and fix it , and check if the RPM meter works or not .If everything is good and still no reading at RPM meter the the meter itself is faulty and you need to repair or replace it.
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HOPE THIS VIDEO IS HELPFUL FOR YOU
THANK YOU FOR WATCHING
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28 сен 2020
