One Quart.
Check the owners manual for a 2001 Fatboy (FSLTF). The exact capacity for the Primary Case is 26 ozs "e". You may end up with an overfill at 32 ozs
Chain too tight
Get the repair manual, follow the steps
Older ones, yes. Newer bikes are belt driven to the rear wheel and chain driven on the primary.
The primary oil does three things. Lube the clutch. Lube the primary chain . And cool the stator. If Harley thought Dextron would do this, they would have recommended the use of it. Keep your Harley a Harley.
The Alternator which is also called a Stator is located inside the primary case. You will have to remove the primary coverand the primary chain. The Stator is bolted to the engine at the crankshaft.
The primary oil capacity for a 1993 Harley-Davidson Sportster is approximately 1 quart (about 1 liter). It's important to use the correct type of oil, typically a primary chain case oil or a specific motorcycle oil recommended by the manufacturer. Always check the owner's manual for precise specifications and maintenance recommendations.
You could find a Harley Davidson key chain at a Harley Davidson store. You could also find a Harley Davidson key chain at any website that would sell stuff online.
Left side of engine commonly called the "primary" chain case side of the engine
The most common cause is a grounded stator. Lack of primary oil or a too-tight chain can also cause excessive chaincase heat.
http://www.hdtalking.com/transmission_clutch_and_primary/3173-how_to_adjust_primary_chain_video.html Try this website it is a video that features the 2003 road king, chain tighten and fluid change
The primary oil goes in the clutch cover (derby) opening, or if you wish you can remove the oval-shaped chain inspection cover and pour it in there. Use one quart.
Get a shop manual. remove primary cover and primary chain. Remove rotor. Unplug stator from voltage regulator. Remove stator. Reverse process to install. You will need a manual and an impact wrench... at very least.