Yamaha Outboards Accelerating: Old vs. New (Awesome Sounds!)
Frequently Asked Questions...
Why does my 90hp Yamaha outboard's tachometer display fade in and out?
I recently put my boat in the water for the first time this season and I noticed that the tachometer reading fades in and out. Mostly out. It appears that the data is being sent to the unit as it becomes visible every once in a long while. The motor was manufactured in 1998 and this is the fifth season it has been operating in salt water. Any help would be greatly appreciated. By the way the motor itself is running just fine.
Best Answer...
Answer:
Answer:
the seal on the tac, has been comprimised, and the moisture getting in , is shorting the display out
better getting a new tachometer, as you will have a lot of problems now, with that unit.
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