Tohatsu Tachometer Hole Size

[Geezer1]

Anyone know right off what the hole size requirement is for a Tohatsu tach 3AD726400M?

 

[GA_Boater]

 

[ahicks]

My luck being what it is, I'd measrure the one I plan on using when it's in my hand.

 

[Geezer1]

So if I drill a 4" hole, that will give the tach something to fall through, right?

 

[Geezer1]

My luck being what it is, I'd measrure the one I plan on using when it's in my hand.

Yeah, I hear you (my luck too). Just trying to get ahead of the game. Maybe not a good plan.

 

[GA_Boater]

4' is pretty much a standard size size for the face. The hole from Tohatsu is;

Fits a standard 3.375 inch (85mm) instrument dash hole which makes this tachometer the perfect drop-in replacement for your current tachometer.

 

[ahicks]

3.375" is a long way from the 4" in the first reply.

 

[GA_Boater]

I'm smart enough to know the hole has to be smaller, as was Geezer1. :smile:

I assumed, shouldn't do that.

 

[Geezer1]

Thx for the info, GA Boater. I did know that the tach has a 4" face diameter, but I couldn't find the specific installation hole size. I'm actually replacing a 3.75" diameter tach that I installed sometime back, and which required a 3.375 hole. So I should be good to go. Wherever did you find that information, I've been looking for days.

 

[GA_Boater]

I Googled "Tohatsu tach 3AD726400M" and got this page; https://www.google.com/search?client=firefox-b-1-d&q=Tohatsu+tach+3AD726400M

The first Tohatsu link is gauges and scrolling down found the hole size.

 

[pvanv]

Fits a standard 3.375 inch (85mm) instrument dash hole which makes this tachometer the perfect drop-in replacement for your current tachometer.

 

[Geezer1]

Thanks for the help guys. I started missing more than my fair share when I turned 70. Hmmm... not good.