I am looking for a sprocket and chain kit , o ring type with a 15 tooth front and a 48 tooth rear . on a beta alp 200 2012 . The factory chain is not o ring and did not last very long .I found I had to adjust every time I used it , it is used for green laning . I have done 2000 miles .

SOURCE: Towing the bike with a cradle

The easiest thing is to remove the front sprocket cover then just slide the sprocket off the output shaft. Now no adjustments are needed to the wheel to get going again. Use wire or duct tape to hold the chain. DO NOT use twine or similar rope. They can come untied and / or stretch.

SOURCE: drive chain goes loose and tight on back wheel turn

No.That was the problem.The chain and the sprockets needed to be renewed.
When you will take, the rear sprocket's base, off the axle check it's bearing.Just put your finger in and turn it slowly to see if it "locks" instantly.It will be nice if you renew it now that you disassembling the chain drive system.

SOURCE: timing chain 110 hymoto pit bike

Put the piston at TDC (Top Dead Center) by lining up the timing marks on the flywheel and stator. Put the cylinder head back together with the cam installed so the high points of the cam lobes are pointing kind of downward. Pull the cam chain taught on the front side of the engine. Put the chain on the cam gear such that, when bolted to the cam, the index mark or marks are in the proper position.

The proper position depends on what markings are on the cam. Some bikes have a single mark; an arrow, a straight line or an "O". The mark should line up with the center-line of the crankshaft. If the cam has two marks opposite each other, the lines should be parallel with the gasket surface. You will need to rotate the unbolted cam left or right just a bit in order to match up the bolt holes to the gear holes.

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SOURCE: How are the chain adjustments on a cbr 1997 600 f3

First thing to do is not to ride the bike until the problem is fixed. A loose chain could lock up the drive sprocket and break the transmission case. If you are on the street at the time it locks up you are likely to be hurt or killed. In the image below note that there are two nuts on each adjuster. The inner nut adjusts the chain and the outer nut is to lock down the inner nut. Also note the "pins" on the two tensioners ( #7 ). Be sure to tighten up the axle bolt after setting the chain tension. If the threads on the tensioners are messed up you will need new tensioners.

Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part and/or the notation "Not Available" is in the description, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

SOURCE: do i have to take the rear wheel out to change the

hi,if it is a disc brake model,you should be able to just unbolt the caliper and slide the caliper off the disc..hope this helps ...cheers