set up about a month while moving, first time out noticed tach reading over 6K rpms, boat is ranger 520 has never shown rpms above 5500. any ideas where to start troubleshooting r buy a new tach. thanks for ur input
set up about a month while moving, first time out noticed tach reading over 6K rpms, boat is ranger 520 has never shown rpms above 5500. any ideas where to start troubleshooting r buy a new tach. thanks for ur input
Teleflex might fix or waranty the tach if it's bad.
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
Check all the connections on the back and make sure they are good. There is a rotary switch on the back that has little marks around it such as "6P", "12P", etc. Turn that switch back and forth a couple of times but make sure you put it back where it was originally.
There is a way to test one with a volt meter but I don't remember the exact numbers you are supposed to see. Basically you have a hot wire, which should get 12v anytime the key is on, a ground, and a sender wire. The voltage at the sender will vary with RPM of the motor via the stator and rectifier. Teleflex used to have the testing procedure on their site but I don't know if it is still there. Check the wires first and turn the switch back and forth and see if that clears it up.
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