Question about Diamondback Octane Jr Boy's Mountain Bike (20Inch Wheels)

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Have a Diamondback Octane 20 (boys). Took the rear tire off to install a new inner tube. Don't know what happened...but now I can't get the chain back in place. Seems all twisted but I know that's impossible because it can't come off the bike. I need some step by step instructions on how to install a chain so maybe I can figure out where I'm going wrong. Thanks.

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Even though chains seem like the can't get twisted, they still can. Rivets in the individual links can become bent, and the links themselves can become bent as well. Also, your chain can be removed, and its a simple process. Although, getting the chain back on sometimes is an excercise in futility.

To remove your chain it's easiest to turn your bicycle upsiode down so that it's resting on the handle bars and the seat. Now you need to look for the master link. This link has a different shape than the other links. This link is designed to snap into place. However, it can be snapped apart for jus this type of scenario. Often, most links resemble an 8. And just as often, the master link is a simple oval shape. Once you have found that master link, use a pair of flathead screwdrivers and pry the link apart. Now that chain is apart, you can easily remove the chain from the bicycle and straighten it out. This will often remove any odd kinks in the chain itself, but be sure you look the chain over for any signs of link damage.

Happy pedaling!

Posted on Mar 23, 2011

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beckysmith123-

Sounds like you may need new tubes. Tubes may be purchased from bike shops, most hardware stores, and some big box retail stores like Kmart and Target, to name a few.

If the leaks in the tubes are reasonably small, there are several products that can be squeezed into the tubes to seal punctures - both existing ones and ones that occur after the product is added. They are put into the tube through the valve stem, similar to adding air). Two that I know of are Fix-a-Flat and Slime. Both can be purchased at most hardware and automotive stores.

Changing a tube is not terribly difficult but can appear daunting if you've never done it before and don't have some of the tools required.

Hereare step-by-step instructions for most styles bicycle:
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  2. Take thewheel out of the frame. If it's therear wheel, you will need to lift the chain clear of the gear cluster. To easethe removal of a rear wheel, shift the chain to the smallest gear on the wheelbefore loosening the skewer or nuts. If it's the front wheel, that one will bea little easier. You may also need to release the brakes if they interfere withwheel removal.
  3. Deflate thetube completely by pressing down on the inner part of the valve.
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Hope this helps.

Regards,

DIYpro

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