Trouble Shooting Tach

[kopeck]

Now that I have my 1993 70HP up and running I want to get my tach going. Last year it would come and go, but now it's dead. It's a Faria and it lights up but it doesn't seems to be getting a signal. Can I test to see if a signal is there using a multi meter or somthing like that?<br /><br />When we first purchased the motor 8 years ago it had the same problem and it turned out it was the rectifier, but the dealer figured it out, not me.<br /><br />Any help would be great.<br /><br />Thanks,<br /><br />Matt

 

[WillyBWright]

Re: Trouble Shooting Tach

Most common cause of a nonfunctioning tach is a bad rectifier. Most common cause of blown rectifiers is loose, corroded, or crossed battery connections. If you have a voltmeter, see if the battery is getting a charge. The battery voltage should increase a bit when the motor is running over the voltage without the motor running.

 

[kopeck]

Re: Trouble Shooting Tach

Just checked and the voltage increase with the engine running (14 volts).<br /><br />Is there anyway to test the Tach?<br /><br />Thanks,<br /><br />K