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ContinuousWave: Small Boat Electrical
Tachometer Reading Jumps Around
|Author||Topic: Tachometer Reading Jumps Around|
posted 05-27-2007 11:06 AM ET (US)
[Describes his tachometer readings as changing suddenly.]
posted 05-27-2007 04:22 PM ET (US)
Check the calibration control on the tachometer. Usually there is a switch to select the proper number of poles in the alternator supplying the signal to the tachometer. Perform this procedure:
Tachometer Calibration Control Cleaning
--make a note of the current position of the tachometer calibration control
--using an appropriately sized screwdriver, move the tachometer calibration control setting back and forth throughout its full range of adjustment, repeating this several times
--return the calibration control setting to the original position noted above
If this procedure does not fix the problem, let us know and we will offer additional suggestions.
posted 05-28-2007 02:55 AM ET (US)
Many thanks. [Says he will perform the procedure to restore the tachometer calibration when the weather permits.]
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