yamaha tacho

[markymarkP]

Hi Guys

quick question,
will a yamaha Tacho used for a 4stroke engine work with a two stoke?

thanks

[Poly]

there may be a "dial" on the back needs setting to indicate the number of poles on the alternator

[outboardtech]

OK this all DEPENDS if your fourstroke tach is digital as most of the fourstroke Yami's now are on the digital NETWORK system . If this gauge is Digital it will NOT work . Is this gauge you have an Analoge gauge ( does it have a needle as a reading and wires coming off it ) If YES then this will connect to the control box harness . most common box is the 703 . Le tme know .

[jyasaki]

I thought anything prior to the command link guages were interchangeable between 4 stroke and 2. These included the non-command-link digital guages (I think Yam called it the Multi-Function Display or something like that.) Point being, it's not just the analog needle displays that would be usable.


jky

[markymarkP]

hmmm
the gauge i have is digital, but faulty, hence trying to swap out.
so unsure of what i can do

[jyasaki]

The question is: Digital in the sense that it displays in a non-analog format, or digital in the sense that it uses digital signals from the motor to convert and display the information?

I suspect that, if both the motors are pre-2006 (I think that's when Yam came out with their Command Link scheme), it is an analog guage that displays digitally.

Assuming you can look at them, you can compare the Yam guages here

I think you're looking at the multi-function guages. The Command Link (which, I believe, won't work for you) are listed separately in a different heading. The site lists the same part number multi-function tach for both the F115 (4-stroke) and your 90-2-stroke, so the answer to your question is yes, they are compatible. As I recall, there's a DIP switch that sets between 2-stroke and 4.

jky