Fender and front wheel mounted
Mount the fender before the front wheel.
Two 8mm 1,25mm pitch bolts on each side. The lower bigge hole (10mm 1,25mm pitch ) is for the front drum brake.
The front wheel:
I have not found any parts manual for the J model in pdf format, only from K and later, but this link on the web shows the J front wheel with the drum brake: