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About LinkBacksI bought a tachometer for this motor does anyone know how many poles this needs to be set on to make it work?
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March 25th, 2008, 09:01 PM #1[OP]Cadet
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Tachometer Poles 1978 140HP Evinrude
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March 25th, 2008, 09:03 PM #2Petty Officer 1st Class
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- Apr 2005
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- Pensacola, Florida
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Re: Tachometer Poles 1978 140HP Evinrude
12 poles I believe.
1984 Cimmarron bassboat 16', with a E90TLCRD, 13.5 x 18 Raker SS prop, Minn Kota 55AT trolling motor.
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March 25th, 2008, 09:03 PM #3Vice Admiral
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- Feb 2004
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Re: Tachometer Poles 1978 140HP Evinrude
It should be set on 6P.
"A manual is a cheap investment"
Fair Winds and Following Seas
Bill
PTC USN ret
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March 25th, 2008, 09:03 PM #4Fleet Admiral
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- Hamilton,Ontario
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Re: Tachometer Poles 1978 140HP Evinrude
6p, this may help. Tachometers read off the alternating pulses from the stator. Tachs have rotary switches on the back that set it to different numbers of coils in the charging circuit, times two because there is a positive and negative pulse for each coil for each cycle. Tachs measure pulses.
http://ww2.tflx.com/pdf/obtach~1.pdf
http://ww2.tflx.com/PDF/99320.pdf
Wow, 3 at once.Last edited by HighTrim; March 25th, 2008 at 09:13 PM. Reason: addition
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