its supposed to be 3.8 litres (quarts) if you replaced the filter but you’re better off putting in 3 and a half then adjusting up after running it for a minute. I usually do about 3 checks to get it to the line and double check its staying at the line.Nice video but he didn’t actually say amount of oil, other than mention the 4 quarts with the kit.
Doing it on kickstand like that make sure to balance bike upright a short time.
It will be about 3 qt + 1/2 to 3/4. Go slow toward end of fill.
Start engine before using final bottle (Replacing dipstick between!).
I like to partially fill the oil filter too, before putting it on.
Also be aware there can be a horrible sound before the oil circulates when starting engine for the first time.
And if you don’t see oil to the very top of the dipstick, where the word FULL is, don’t worry about it.