Question about Mongoose 2009 Firball 24" Boy's Moutain Bike
Try this: shift into the highest gear and release the derailleur cable at the derailleur. Pull it taut and retighten the pinch bolt. Give it a thorough washing and degreasing, too. A clean drivetrain is a happy drivetrain. Remember to use bike chain oil, not anything else, on the chain and ONLY on the chain.
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
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