Question about 2007 AJP PR4 125 Supermotard

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Sprockets' replacment Do I have to replace the sprockets at the same time I replace the chain?

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Yes. It’s likely that the sprockets are worn. Putting a new chain non a worn pair of sprockets will make the chain wear out faster—and replacing the sprockets without replacing the chain will sear out the sprockets. Do them as a set.

Posted on Nov 10, 2008

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How can I replace a sprocket


If you are replacing a sprocket, you should replace both sprockets, and the chain. These work as a system and tend to wear together. That said the rear sprocket is easier to replace as it just unbolts from the rear wheel once you have the rear wheel removed.

The front sprocket will likely require impact tools, and is accessible under a cover. If you feel you need to take the chain off, there is a C-clip holding the master link in place. Locate and remove the C-clip and master link to remove the chain.

Oct 18, 2014 | Motorcycles

1 Answer

How to replace front sprocket


To replace the front sprocket follow the chain to the cover on the left side and remove it, loosen the chain tensioners on the rear axle, slide rear wheel all the way forward and remove chain. Then remove the bolt in the center of the front sprocket, change sprocket and reverse process for assembly. That is the process but if you are going to change the front sprocket you should change both sprockets and chain, as the chain stretches and will cause premature wear of the new sprockets. Complete sets can be found on Ebay for little money, maybe they are not the best but as long as you do not abuse them they will do until you get the money for a good set.

Feb 24, 2014 | 1994 Honda CBR 1000 F

1 Answer

How to replace front sprocketKawasaki How To Install


Slacken off chain, remove front sprocket cover (6mm hex keys), Remove centre bolt holding sprocket, and prise off sprocket, it's located on a keyway, fit new one in reverse order making sure the key is in place, replace cover and adjust chain. It is usual to change the rear sprocket and chain at the same time, they all wear together, if you just change one, it will wear quicker.

Oct 26, 2013 | kawasaki Motorcycles

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How do you know a chain and sprockets need replacing? Chain seems to be stretching regularly


When the chain adjusters are nearing maximum adjustment range the chain is definitely ready to be replaced. Rapid stretching is not a good sign. It is good that you are concerned about the condition of the sprockets. Most guys don't even think a sprocket wearing out. Below is a diagram showing different wear patterns on sprockets.tombones49_294.gif

Sep 13, 2011 | 1999 kawasaki ZRX 1100

2 Answers

Chain noise chain keeps getting tight


If the chain keeps getting tight, it is in need of lubrication. Chances are it is time to replace it. I say this because if the chain breaks and locks up the rear wheel, suddenly you will be sliding down the road on your hands and knees while the bike slides a different direction. Your forward motion will likely be stopped by a Ford F250 coming from the opposite direction. Check the front and rear sprockets for wear. I will bet they both need to be replaced. Please rate my answer. Thanks!
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Mar 30, 2011 | 1981 kawasaki Csr 1000

1 Answer

2008 wr 450 how do i split the chain do i need 2 gring a link down so i can push it out ?


Yes you do need to split the chain but I would have a real good look at the condition of your sprockets 1st.Obviously you have run out of adjustment on the chain but taking a link out might not be the answer.With the rear wheel lifted,spin the wheel back and forwards a few times.Now, at the rear of the rear sprocket,pull on one of the chain links.Pull it away from the sprocket.If you can lift it away from the sprocket about 1/2 a sprocket tooth,both chain and sprockets need replacing.Just keep this in mind because a broken chain on 450's can do a lot of damage.Hope this helps

Jan 04, 2010 | 2005 Yamaha WR 450 F

2 Answers

How do u know if your chain is worn out or if it


Unhook the master link and lay the chain in the concrete. Next, hold one end to the concrete and sort of push the chain towards the stationary end. The object is to push the chain together as opposed to stretching it apart. Mark the concrete at the location of the shortened end. Now again hold the stationary end firm and this time stretch the chain to its' fullest length. Mark the concrete again at the end of the stretched chain. If the distance between the marks is over one inch the chain should be replaced.
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Look at the teeth of both sprockets. Are the teeth rounded on the end or are the teeth forming a pointed looking end? If rounded, then the sprocket is good. If pointed, then the sprocket is bad.
Bad sprockets can ruin a good chain. The exception to the one inch rule is a chain that is rusted and no longer limber. Replace a rusted chain. Remember, always install the master link clip with the blunt end facing the direction of chain travel.
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Please rate this solution, Thanks.

Mar 18, 2009 | 2001 Yamaha YZF-R6

1 Answer

SUZUKI INTRUDER 125, WHICH CHAIN SHOULD I BUY


the chain type is 428. take chain off and count # of links.give those 2 #s to parts guy. when you replace a worn chain,the front and rear sprockets should be replaced at the same time, because worn sprockets and a new chain will cause accelerated chain wear. count # of teeth on sprockets & give those 2#s to the parts guy also. if you want a longer wearing chain, buy one w/ the highest tensile strength,once again, parts guy can help you find that.dont forget,lube & adjust chain as needed.

Feb 17, 2009 | 2003 Suzuki VL 125 Intruder LC

2 Answers

Chain


Yes. It’s likely that the sprockets are worn. Putting a new chain non a worn pair of sprockets will make the chain wear out faster—and replacing the sprockets without replacing the chain will sear out the sprockets. Do them as a set.

Nov 20, 2008 | 2005 Harley Davidson VRSCB V-Rod

1 Answer

Chain tight spot


BUT adjusted like that there's a tight spot with 0mm. The green new chain required gauge on swinging arm tells me there's plenty of life left in the O ring chain. I've done approx 7K miles and chain wasn't new when I got the bike about 15 months ago. The sprockets are not BADLY worn. I fitted a Scottoiler 7 or 8 hundred miles ago..........Do you folks think I need a new chain and sprockets? This tight spot has only very recently become evident - don't think I've damaged the chain but maybe I have. Think I'm talking myself into new chain here!..............Anyone got advice about cheap/good value UK suppliers? Could do the job myself I thinkIf the tight spot is bad enough you will need to replace. And you MUST do it as a set...chain and sprockets. It is a waste of money to just replace the chain because the worn sprockets will wear it out in no time. And do not cheap out on the chain. Make sure you get a good quality O or X- Ring chain. I know the popular thing to do with sprockets is to get Aluminum to save weight, but I'd get the steel. It may weigh more but it will last twice as long. Just re-read, if it is adjusted to spec and the tight spot has no freeplay, yeah, time to replace.,,,

Nov 10, 2008 | 2007 HM CRM F450RR I

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