1989 US Marine Faria Tach for Force 125

[Glenn Iverson]

Im swapping out my 89 Force 125 for an 89 Evinrude 150 V6
The mechanic said the tach may not be compatible for the Evinrude. I believe that Force used a 20 pole tach.The boat is an Arriva so it used the large 5 in. bayliner dial tach with square bezel. I havent looked at it yet as the boat is at the shop but are there settings where you can set it to 12 pole which is what the Evinrude needs?

 

[Derrick Fronckowiak]

Glenn, for what it's worth I had a somewhat similar issue (not really but sort of). I wanted to get a Faria tach to put on my boat (I got a 1990 Bayliner Capri with a Force 90 motor, it didn't come with a tach). Well, as you stated, Force uses a 20 pole alternator but Faria no longer makes tachs for 20 pole systems. So I talked to a tech assist guy at Faria and he sent me plans (very simple I might add) to build a pre-scaler (a simple electronic box that will adapt a 20 pole system for one of their tachs). It's just a simple IC board and a few resisters and wouldn't cost you more than $20 in parts. But, in any case my point is Faria did offer me some kind of solution. I didn't build my prescaler yet because I haven't yet bought my tachometer. Go to the Faria web page and contact the tech assist guys. They're pretty helpful and I'm sure they'll be able to help you.

 

[Glenn Iverson]

Thanks for that. I would need to call Faria about converting a 20 pole tach to a 12 pole tach. When I see my boat again I will have to get underneath & check if there are pole settings. i have heard that some 20 pole Faria tachs are non adjustable & some have a 12 pole option. The info out there is limited.

 

[jerryjerry05]

The 20 won't work.

​The hole under the tach is a standard hole that all boat makers use.
​A replacement will just slide right in.

 

[Glenn Iverson]

I thought that may be the case. I picked this tach up at a salvage yard awhile back. the guy just threw it in. I looks exactly like the one in my boat from the front but the white label is mangled. looks to have 4 pole settings. Anyone wanna guess if it is compitable for 12 pole?

 

[jerryjerry05]

That one might be for an I/O or straight drive.
The tell is that is says 8cyl. and only hits 6000.
Most outboards go up to 7 maybe 8000.