engine oil drain plug is located behind the right side swing arm and go straight down behind it. you can follow the oil line from the oil reservoir, it is covered in corrugated material. The tranny drain plug is located under the motorcyle in between the horizonal shocks. inline with your passenger foot pegs. both drain plug require a 5/8 socket to remove
.037" to .043",
The oil drain plug on a 2001 Harley Davidson Road Glide is located on the bottom of the engine. It allows the coil to be quickly drained during maintenance.
I prefer Autolite plugs. Dyno shows them to add about 2 HP.
The drain plug for a 1999 Harley Davidson soft tail is located at the bottom of the oil tank. There is a rubber hose leading to the frame, follow it to the right side of the frame. It is located under the bike on the frame.
The oil drain plug on a Harley Davidson 003 Dyna Wide Glide is located on the left side of the oil drain pan. The right side contains the transmission drain plug.
.040"
It is located on the oil pan behind the kick stand.
the drain plug is at the end of the tubing coming off the back of the oil tank
A 5/8" socket wrench.
The suggested spark plug gap for a 1973 Harley Davidson is 0.040. It is the suggested gap for most of the spark plugs of that era.
the gap for a Harley plug on a 88c.i. is 30
On a 1993 Harley Davidson Low Rider custom, the transmission drain plug is underneath the transmission. The filler plug is on the side of the transmission case.