Tachometer; 0-8000 RPM mercury part number 895283A06 for 3cyl OB?

madgadget

Petty Officer 1st Class
Joined
Sep 28, 2009
Messages
281
Just wanted to check as I am not sure how many pole a 3cyl 2 stroke OB is (I think three?) that this tacho will work "Tachometer; 0-8000 RPM mercury part number 895283A06"

Can anyone confirm this :)

Thanks!
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Tachometer; 0-8000 RPM mercury part number 895283A06 for 3cyl OB?

Try 12 pole, 6 pulse. Has nothing to do with the number of cylinders. Most generic tachometers are driven by the engine alternator. Set the tach to 6P.
 

madgadget

Petty Officer 1st Class
Joined
Sep 28, 2009
Messages
281
Re: Tachometer; 0-8000 RPM mercury part number 895283A06 for 3cyl OB?

Ahh good point I forgot that it came from the generator stator not the ignition pulse. Thanks :)
 

kaferhaus

Petty Officer 1st Class
Joined
Dec 17, 2008
Messages
250
Re: Tachometer; 0-8000 RPM mercury part number 895283A06 for 3cyl OB?

There are plenty of "generic" tachs that will work also... and much less expensive. Some are "iduction" tachs... just tape or zip tie the lead to the number 1 spark plug wire.... I bought a digital one for $36 that's been working great for 3 years.
 
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