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Tuesday, September 24, 2013

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How to Disassemble a Sportster Primary

How to Disassemble a Sportster Primary

The primary drive on a Harley Davidson Sportster is concealed inside a metal case to prevent any part of your clothing or body from becoming trapped in the rapidly spinning belt while youre riding the bike. If you need to adjust the primary chain, you must remove the cover. There are some discreet little bolts that hold the whole assembly together, which can be difficult to find if you dont know where to look.

Instructions

    1

    Run the engine for three to five minutes until the temperature starts to rise. This will thin the oil in the primary, allowing it to drain more readily. Place the bike on its side stand and put the container under the primary. Loosen and remove the drain plug from the underside of the primary cover, and drain the oil into the container.

    2

    Use an Allen wrench to loosen the bolts around the circular Derby cover, which is mounted on the primary cover. The clutchs spring mechanism has to be removed before the rest of primary cover can come off. The mechanism is behind the Derby cover. Remove the uppermost locking nut, which will release the spring underneath. Slide the spring out, which will reveal another locking nut beneath it. Loosen and remove this nut, too. Store both nuts and the spring in a safe place.

    3

    Work around the outer edge of the primary cover, loosening and removing all of the Allen bolts on the outer perimeter of the cover. Once youve removed the last one, the primary cover should lift off.

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