20 Most Recent Mountain Shimano Tourney 6/7 Rear Derailleur Direct Mount Bike Questions & Answers

I had to use Google translate, as I do not read German. However, I think you are asking which derailleur pulley wheels go on the top and bottom. I would suggest Googling for images of your particular derailleur. It appears to me that the large pulley wheel goes in the upper position, and the small in the lower.

Simple web searches will answer many questions like yours immediately.

http://www.parktool.com/blog/repair-help/front-derailleur-adjustments

http://techdocs.shimano.com/techdocs/index.jsp

Pick just about any rear derailleur for instructions.

Good advcie on adjustments...
http://www.parktool.com/blog/repair-help/categories/derailleur-systems

Some guidance...

http://www.parktool.com/blog/repair-help/hub-overhaul-and-adjustment

Look around here.

http://techdocs.shimano.com/techdocs/blevel.jsp

Mountain Shimano Tourney Shifters

There are several things that could be wrong. You could have thrown your chain (you couldn't ride at all if so). The bike could have been crashed and the derailleur bent. The cable might have slipped where it bolts to the derailleur. Or the cable or shifter could need maintenance, too. It is most likely one of the above. If it is only the adjustment, there are two stop screws on the derailleur that can be adjusted.

My best advice for you is to either find a bicycle repair manual at a local bookstore or your library that can show you some of the detail. Or just let your local bike shop do the repair.

you need to adjust the tension on the derallieur, you can log onto shimano.com and follow instructions, it is simple enough the way they show it, if not then search derallieur adjustment

You may have too large a tire on the back for the bike. However, if the derailleur hanger is bent, this could also cause the problem. Flip your bike over onto the bars and seat and make sure the derailleur alignment is good (vertically and longitudinally straight). If the derailleur hanger is straight, then you will have to use a narrower tire in the back.

Sorry, this question doesn't make sense. Are you trying to remove the spring or are you trying to adjust it?

No specific manual, but they are all the same basics https://www.google.com/search?q=Nishiki+Colorado+XC+Mountain+Bike+manual They are made by Kawamura Nishiki is a brand of bicycles designed, specified, marketed and distributed by West Coast Cycle in the United States, initially manufactured by Kawamura Cycle Co. in Kobe, Japan, and subsequently by Giant of Taiwan. The bicycles were first marketed under the American Eagle brand beginning in 1965[1] and later under the Nishiki brand until 2001. https://www.google.com/search?q=Kawamura+mountain+bike+manual ..

Multiply the size in inches by 25.4 converts it to metric.

hi if i remember correctly to size up for a bottom bracket, flip your bike upside down resting on handle bars and seat carefully not to damage anything, and where the bottom bracket go's through the frame of the bike you take a tape measure and measure the width of only the frame housing where the bottom bracket go's into this is a lot easier to do when the crank arms are removed. also on some bottom brackets when removed from the bike has all the data stamped on it depending on the type of bottom bracket. if not measure the width of the frame where the bottom bracket sits in too and that will be the size of the bottom bracket you need, then determine which type it is once you have remove the cranks arm which are attached to the bottom bracket could be splined drive or square tapered type bottom bracket basically the shape of the metal part that the crank arms push and bolt on to then match up on a cycle part website.

The front wheel is normally held in with one of two common methods. A basic nut on each end of the axle or a 'skewer' pin. On most bike that do not have disc brakes you might need to unhook the brake arms to allow the tyre to clear the brake pads. For the nut type simply slacken the nuts and drop the wheel out of the C shaped notches the axle sits in. The skewer type is a small lever on one side you swing all the way over then slacken the nut on the opposite side two or three turns. The wheel should then drop down and out.

you have a repair problem with yours?

loosen rear tire pull back and tighten when chain slack is removed

Below are Google searches related to selecting derailleur hangers and derailleurs: https://www.google.com/search?rlz=1C1AVNG_enUS623US623&sxsrf=ACYBGNTYWvyU3GyWyJhkVrHsWKAyVWyeAA%3A1571575082791&ei=KlWsXe72L6jn_QbSp4fIDA&q=How+do+I+find+the+right+derailleur&oq=How+do+I+find+the+right+derailleur&gs_l=psy-ab.3..35i39l2j0i22i30l2.199.2278..3734...0.2..0.415.1692.1j2j2j1j1......0....1..gws-wiz.......0i71j35i304i39.yg6EQfBH3Q0&ved=0ahUKEwjus7C07arlAhWoc98KHdLTAckQ4dUDCAs&uact=5 https://www.google.com/search?rlz=1C1AVNG_enUS623US623&sxsrf=ACYBGNTI9ScWRMkGmDQ4BGOVQRDXXGpbKg%3A1571574983623&ei=x1SsXcPSJYSyggf2y4CYBg&q=How+do+I+find+the+right+derailleur+hanger&oq=How+do+I+find+the+right+derailleur+hanger&gs_l=psy-ab.3..35i39j0i22i30.2330.7755..8526...2.1..0.151.571.1j4......0....1..gws-wiz.......0i71.XM0vCxnxmSg&ved=0ahUKEwiD0ouF7arlAhUEmeAKHfYlAGMQ4dUDCAs&uact=5

Yes it can, This web has diagrams and instructions with pictures,http://www.bikewebsite.com/rhub.htm.

Unless your feet are extremely angled in or out on the pedals it is not possilbe for your shoes to hit either wheel while traveling straight ahead. When you turn you should coast.