1981 sportster oil line diagram
you can find it in a clymers manual #m420
You could check your local library for a Chilton's Manual. Or you may be able to ask someone on a site like Craigslist or even a Harley Forum Site. Good Luck!
http://www.twowheelsforever.com/how-tos/how-tos.html a diagram is at this site with pictures
The oil line routing for a 1990 Harley Davidson Fat Boy involves several key components. The oil is drawn from the tank through the oil pump, which then routes it through the oil filter. From the filter, oil flows to the engine's critical components, including the crankcase and cam chest, before returning to the oil tank through the return line. It's essential to ensure that all connections are secure and that the lines are free of kinks or blockages for optimal performance.
rev tec oil lines diagram
i have one or you can purchase a clymers manual #m420
yes
80/90 semisynthetic hypoid gear oil is what the factory put in it but I use Red Line Heavy ShockProof fully synthetic gear oil. Not cheap but neither was your Harley.
Sunoco, makes Harley Davidson engine oil
where is the oil drain on a 2002 harley softtail
Usually it's called transmission oil. For example I use red line transmission oil in both my motorcycles(Harley,Ducati)
how much oil is required to change oil and filter in a 1997 Harley Davidson Sportser