Re: tachometer (accessory) question

[Don]

Yeah, I wouldn’t chance spending $40 on that tach designed for the snowmobile….A decent used OMC outboard tach shouldn’t be too tough to come by. 93 was one of the first years for the larger alternator on the 40-50hps. So, if you have the larger alternator (equipped with finned rectifier/regulator) you would set the OMC tach to position "6". If your engine has the smaller alternator (equipped with the four wire conventional rectifier), set the OMC tach to position "5".