How to fix bike chain - Cycling

loosen front tyre, ease chain on. re-tighten when taught tension. easy, might consider lube and cleaning chain while your there.

Sometimes all it takes is a master link or "quick link," but you can't count on that. How to fix it depends on several factors. There are different chains for the various number of cogs/gears on the rear of the bike, and an older chain may require a different procedure than a newer one. Further, if the chain is badly worn it may need to be replaced, but then may not mesh well if the gears aren't replaced as well. Finally, just taking out the rest of the link (one full link is one outer and one inner) may make the chain too short, which could damage the bike.

It's best to take the chain and bike into a bike shop, or a bike co-op if there's one available. If you really want to know all the in's and out's see this link: Chain Maintenance

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

you can loosen the chain by loosing both nuts on the back wheel and sliding it ahead a little bit but I do not belive this will fix your problem your son might just be a little to small yet

Its usually a bad freewheel. Its a complex operation to replace, contact local bike shop for assistance

sounds like u sheared he role pin on the ger ortiming chain has broke and wrapped around the gears had a 500xr that broke the chain like i said

very likely that chain links not "fitting" cog teeth . if both chain and cogs are brand new, then skipping should never happen. more often than not, a repair would require both new chain and new rear cogs, and possible new fron t chain wheel. all depends which item are worn. I would probably get a new chain firstly, then see if this fixed the problem. nigel

Ask a local Bike Shop. Derailleurs for that bike are cheap. Evaluating the bike for a bent derailleur hanger and fixing it is a job for the pros. Word to the wise. Never pedal backward or roll the bicycle backward if it is the rear derailleur is not precisely aligned with a gear. It WILL rip bend or the derailleur right off.

if the bike has gears it does not have a master link, that is for single speed bikes only.

You will need an 8spd chain for your bike (1/2" x 3/32), these will fit any 6,7 or 8 spd bike. This requires a special tool to install ($8-$25), I would recommend taking into a bike shop and have them do it if you have no experience with this type of chain.

Side note: if you do own the tool, you can repair a broken chain for a temporary fix in the future, so may be worth buying. Check around, many bike shops offer basic repair classes and cover this.

You should go to a bike shop, they can sell you a master link, and keep your own chain. Is your grandson's bike a 1 speed or a multi speed bike, if it is multi then you need a chain tool. Bike shops can do the job cheaper than you can buy the tool and it will be done right. Take the chain back to the store that didn't carry the tool.