Tach question 4 stroke to 2 stroke?

[CWKboat]

I bought a 2002 Larson 210 that originally had a 4 stroke engine. I'm putting a '86 Blackmax 150 on it. The original tach is still in the boat and it's a Faria and on the back says "Universal." It has what looks like to be a knob for several pole settings, but is it going to work on a 2 stroke?

It's the larger cutout 4 1/4" as well where the tach is combined with the trim gauge, so I'm hoping I can still use it, but is it incompatible with a 2 stroke?

Thanks for the insight!

 

[saumon]

Re: Tach question 4 stroke to 2 stroke?

Will work. Yours need to be set to 12p.

 

[CWKboat]

Re: Tach question 4 stroke to 2 stroke?

Will work. Yours need to be set to 12p.

Awesome, thanks so much for the verification!

 

[j_martin]

Re: Tach question 4 stroke to 2 stroke?

The tach runs off the alternator. It only cares how many poles are in that alternator. It doesn't care if the engine goes squish-bang, or suck, squish, bang, phart.

 

[saumon]

Re: Tach question 4 stroke to 2 stroke?

...the engine goes squish-bang, or suck, squish, bang, phart...

i really like your simple yet accurate description of 2-stroke vs 4-stroke engine operation

for the OP, here's the Faria chart for setting up tach
http://faria-instruments.com/site_manuals/IS0012u.pdf

 

[CWKboat]

Re: Tach question 4 stroke to 2 stroke?

i really like your simple yet accurate description of 2-stroke vs 4-stroke engine operation

for the OP, here's the Faria chart for setting up tach
http://faria-instruments.com/site_manuals/IS0012u.pdf

Saumon, that's a great help, thanks!