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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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will this work?
My boat tach just quit. I have a 115hp Johnson '77. An OEM replacement
goes for about $130. There are automotive units commonly available for down around $30, and I'd love to be able to use one of these el cheapos if it will work. Most auto tachs have a switch on them for selecting 4/6/8 cyl use. I think putting the switch on the 8cyl setting (4 cycle, of course) would cause the scale to read right for my 4 cyl 2 cycle boat engine. Both tachs seem to be triggered by a 12v pulse from the electrical system. If I'm right on the above, then it seems I can get away with using the automotive tach. Thoughts/comments... |
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