The Sportster does not have a dip stick for the transmission/ primary oil. You just pour one quart of oil in through the upper inspection hole.
On a Big Twin, there is a chrome endcap on the right side of the transmission. In the end cap, there is a plug that usually takes a large hex key or Allen wrench to remove. It has the dip stick on it. Stand the bike straight up to check the oil level. It should be between the two lines on the stick. The transmission holds 20-24 ounces of transmission lube.
Good Luck
Steve
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I need to know what year and model bike you've got. There are just too many different models for me to type them all out here.
Steve
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