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Old Feb 6, 2024 | 05:50 PM
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Default What is it?
2004 Fat Boy has a strange cap on the oil tank. Looks like a little window in it. Is it a sight gauge? thanks, gregjo1948
 
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Old Feb 6, 2024 | 06:22 PM
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Originally Posted by gregjo1948
2004 Fat Boy has a strange cap on the oil tank. Looks like a little window in it. Is it a sight gauge? thanks, gregjo1948

Could it be a temp gauge....?

There are two types:

One has a small window with a button. You push the button and the oil temp shows in the window.

https://www.harley-davidson.com/us/e...ut/p/62955-09A


The other is just a analog gauge with a watch type face, and a dial with temps along the outside edge. A pointer (like a minute hand on a clock) that points at the temp.

https://www.harley-davidson.com/us/e...e/p/62667-87TA
 
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Old Feb 6, 2024 | 06:38 PM
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Picture says a 1000 words....
 
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