1990 50hp Force outboard Need a tachometer

[TLP Quantum16XB]

I am a newbee cut me a little slack. What tachometer do I need for a 2 stroke 2 cylinder 50 hp outboard, Model# 507X90A Serial# 020171.It is a 1990 I think with very low hours.
Thanks

 

[mysteryboy28]

A generic version of Tiny Tach should work fine. I just ordered one for $22 on Amazon, that has a green backlight, as well as a red backlight if you exceed a certain RPM (red line). There should be a grey wire coming off your rectifier. Connect the tach to that.

 

[mysteryboy28]

https://www.amazon.com/gp/product/B07DZB57H5/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

 

[jerryjerry05]

Try this.
https://www.bing.com/aclk?ld=e8NV4Fr...864c77a87303ab

 

[mysteryboy28]

My generic tachometer arrived today. I was wrong - doesn't connect to the grey wire - you wrap the wire around a spark plug wire, and it senses the spark signal. Short cable means I have to keep the tachometer near the engine...

 

[chris.olson]

I have a Bosch tachometer for 4 or 8 cylinder automotive. Connect it to one lead from the charging system stator, which is 8 pole, 4 pulses/rev.. Set the tach to 8 cylinder. It works fine. About $36 at Auto Zone parts store.

 

[jerryjerry05]

Chris does this tach work in a boat?
The stator is a 20 pole for his 50.