<div>I just finished installing a new Amtech alternator and Heart
incharge 3 stage regulator. The system works great. However,
there is one glitch. The tach. is driven off the alternator not
the flywheel and now it is not in claibration - at about 1600
engine RPMs the tach. is pegged. The engine is the 3QM30 Yanmar.Does anyone know if there is an adjustment on the tach. or how to
re-calibrate the instrument? I assume what the tach. does is
read pulses off the alternator and the new alternator runs at
higher RPMs than the old 55 amp one and therefore is no longer
accurate. Ideas? Experiences?Thanks,Vic Copelan
</div>
incharge 3 stage regulator. The system works great. However,
there is one glitch. The tach. is driven off the alternator not
the flywheel and now it is not in claibration - at about 1600
engine RPMs the tach. is pegged. The engine is the 3QM30 Yanmar.Does anyone know if there is an adjustment on the tach. or how to
re-calibrate the instrument? I assume what the tach. does is
read pulses off the alternator and the new alternator runs at
higher RPMs than the old 55 amp one and therefore is no longer
accurate. Ideas? Experiences?Thanks,Vic Copelan
</div>