Yanmar GM Tachometer

[ggray]

With the tachometer being "driven" by the alternator, how does one adjust for making a change to the size of the alternator sheave?

I have a high output alternator, and had to increase the size of the sheave because of belt slippage. Actually, I did this years ago, and just realized that doing this would affect the tach.

[Finistere]

I don't believe they are adjustable, mine is not.


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