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-   -   25 SC Tachometer problems (http://www.mariahownersclub.com/forum/sea-fox-mariah-talk/10434-25-sc-tachometer-problems.html)

garejoha 08-17-2015 08:16 AM

25 SC Tachometer problems
 
I have a problem with my tachometer, it suddenly shows 1000 rpm to much. at top speed it goes up to 6100 rpm. ( usually 5100-5200 rpm)

The motor is running fine, this proplem comes and goes. suddenly it can dropp to normal when driving.

The motor and boat is a 2008-model with Fariamade instruments.

mikeyt 08-17-2015 08:01 PM

Re: 25 SC Tachometer problems
 
This question gets asked quite often... check the wiring connections to ensure they are clean. Then access the back-side of the tach where you will see a small wheel marked 2-4-6-8. Give the wheel a spin a few times then reset it to 8. If that fails then it's time to return the tach to Faria since they have a lifetime warranty.

garejoha 08-18-2015 06:43 AM

Re: 25 SC Tachometer problems
 
Thanks, I gave the wheel a spin and set i at the same place.. now the tach works great :)

cew388 12-03-2019 02:49 AM

Re: 25 SC Tachometer problems
 
I have a 2000 25 foot(don’t know model, just bought it) & tach & compass don’t work. Any ideas? Thanks

mikeyt 12-03-2019 06:56 PM

Re: 25 SC Tachometer problems
 
Quote:

Originally Posted by cew388 (Post 66449)
I have a 2000 25 foot(don’t know model, just bought it) & tach & compass don’t work. Any ideas? Thanks

Read post# 2. And if you have a "2000 25 foot" boat.... you do not have an SC25. Your boat info says you have a "Talari' and yet your other post indicates you have a Z252. If might help if you knew what boat you actually have...

cew388 02-29-2020 10:30 PM

Re: 25 SC Tachometer problems
 
Can anyone tell the horsepower 2000 merc engine OL621170? Engine model is Mers 7.4L MPI Bill. Thanks
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