Not knowing anything about a 1862 , I can tell you that the oil light stays on for 5 running hours each time the oil is required to be changed in my Kohler V-twin 22hp
I posted a thread on here about this , it is programmed in to the meter , I am not saying this applies to your mower but check it out
Here is the thread
https://www.onlycubcadets.net/forum/...ad.php?t=60543
Oz