"Hi all. I have a 90HP 2cy serial 0T734284 that does not seem to be charging. The battery voltage is 12.8 when the engine is not running. When the engine is running, the voltage does not change. The manual says the voltage should increase to around 14.5. Coincidentally, the tachometer no longer works and moves erratically on the dial.
(Not sure if the two problems occurred at the same time.)
I'm thinking I need a new regulator and a new tachometer.
What do you think?