tachometer

I have a 2006 52DB with MAN 2876 LE 405 engines. One of my tachometers has failed and I need to find a replacement (picture below). The tach is made by Medallion Instrumentation Systems. The description and part number on the label is: 5 In Tach, 0-3000 RPM Port 6742-16000-01 Any...

When I am running, the tachs are off by about 300 RPMs but the synchronizer shows dead center. Which do i believe and any ideas on how to test this? Fix this? Also the throttle handles are off a little bit and its annoying. Ideas to resolve? Please help! Thank you.

I just bought a 97 175 5 series and some of the gauges do not work. I can not find any links to fix this. Oil pressure and up/down gauges do not work. The tachometer works, but can reads high intermittently. Speedometer seems to be a few mph short of my cellphone GPS. I am guessing I have a...

I have an '86 Sedan Bridge 300 with twin 350 Mercs. The port engine has started to read higher RPM on the flybridge than it shows in the cabin at the lower helm. When I look at the cabin gauges, the port and starboard read similar values when applying the same amount of throttle, but they are...

I'm looking for a replacement rev counter for a 2006 40DA Sundancer Cummins Diesel or any recommendations for a repair service? Thanks you

The Admiral and I are getting close to moving on up to a 390DA and doing my due diligence I'm trying to use the group expertise here to help me with a few lingering questions... This question is to the diesel owners. The boat I'm looking at has QSB 380s but the Tachs in the dash are 6000rpm...

Help! I have owned a 1998 Sea Ray 210 Signature Open Bow for about 10 years. Purchased it with 40 hours on it and it now has approximately 600 hours. A couple of years ago it started backfiring periodically under load. The problem has become increasingly worse and is now a problem every...

Was hoping someone might be able to give some advice on which style of Aetna Tacho would suit a 400DA best? Not sure to go the LED or LCD Display - wondering which would work best with glare etc.. Thanks!

I have a 1999 210 bow rider with a 5.0L Mercruiser EFI. Just recently I have had some trouble starting it, and, more of a problem, once it has been running a while the tachometer goes crazy, bouncing between zero and 5000 rpm while the engine skips and pops. It sounds like the coil to me, but...

Wanted: I am looking for a 4" digital tachometer. I have twin 4.3's one of the tachs is dead. Any help would be appreciated...Yes, Another newbie, I will introduce myself in the newbie forum...:grin:

I have an issue with my port tach and am considering replacement. The analog guage is inop intermittantly (reads zero or low), but the digital display is constant and correct. This leads me to believe it is a mechanical/electrical issue in the analog guage itself and not an engine or...