On this engine, it is somewhat hidden behind the oil filter. To replace it, the oil filter will need to be removed, so this is a good time to change the oil.
If you look at pic 1, I attached a picture of its location after the oil filter has been removed. The remaining pics are from my manual that shows the procedure for replacement.
I hope this helps. Let me know if you have other questions or if I can help in any way.
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