approximately 24 ounces
There is NO WAY possible
remove the derby ( round) cover and fill until it tries to run out of the derby hole.
It indicates that its a 5-speed transmission.
The modern Harley Big Twin motor is based on the first overhead valve Harley twin, the 1936 Knucklehead. All subsequent air-cooled Big Twin motors are just improved versions of the Knucklehead. Here's a timeline: Knucklehead: 1936-1947 Panhead: 1948-1965 Shovelhead: 1966-1984 Evolution: 1984-1999 Twin Cam: 1999-
Can't Speak for all Twin Cams but on my 04 Heritage is between the shocks underneath the frame..
This will depend upon whether this is a Sportster engine (which has two separate oil supplies) or a Big Twin (which has three).
Harley Quinn
(NOTE: this answer covers both engine and primary/transmission lubricants, since the question did not specify which was of interest.) The recommended engine oil for this bike is Harley-Davidson's proprietary "Genuine" brand engine oil. However, many aftermarket oils are available. If you use an aftermarket oil, make sure it is labeled "for use in Harley-Davidson motorcycles" to make sure additives, temperature tolerance, etc., comply with Harley requirements. Automotive motor oils are NOT recommended for Harley engines. In a pinch, if you need oil NOW and can't find a Harley shop (or a shop selling aftermarket "for Harley" oil), the manual recommends using the proper weight motor oil specified for use in DIESEL engines. Recommended viscosity is 20W50 for all normal conditions. Oil capacity for the rigid-mount Evolution Sportster engine (1986-2003, 883, 1100 and 1200cc) is 3 quarts. The recommended primary/transmission oil for this bike is H-D "Sport-Trans" fluid, which is a specialized lube formulated to work with the wet clutch. H-D discontinued this fluid, and it is now superseded by "Formula+" fluid, which is a "universal" fluid for transmission and primary drives in both Sportsters and Big Twins. Many aftermarket primary/transmission oils are also available; if you use one, be sure it's labeled for use in the Sportster transmission, as the lubricant for the Big Twin transmission may not work properly with the wet clutch. Transmission capacity is about 0.8 quarts, but varies from one bike to another.
The term 'big twin' is almost always used to refer to V twin engines, such as the Harley Davidson which were, for a while, the largest capacity motors on the market until about the mid 60's when the Japanese manufacturers started turning out 1000cc four cylinder engines. newtest3
harley Davidson did not invent the V-twin motor,who did?
potatopotatopotato
Harley-Davidson Oil Pressure Specs for the Twin Cam Engine: Cold engine start-up: 44-50 psi. Warm engine at 2000 rpm and up: 30-38 psi. Warm engine at idle: at least 10 psi.