I have a '98 Force and I was running the boat the other day and all was normal and all of a sudden the tach was too high, but the motor is not running that high (normal at WOT is 4300-4400) this was 5000rpm. This happened a year or so after I got the boat new and I replaced the tach and ever since it has been fine. Can someone point the right direction before buying another tach as far as voltage measurements at the battery and the rectifier. I would like to rule those out first. thanks
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