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4

It's hard to tell whether your crank is a classical design or something new and weird. For the classical design you use a "crank puller". or These look sort of like what you show, but you notice the "barrel" is threaded. You remove the bolt holding the crank on (using a standard "Allen" hex wrench) and then thread in the outer barrel of the puller, ...


3

According to the website for your bike (http://2014.merida-bikes.com/en_int/bikes/cross/cross/2014/crossway-40-md-390.html), you have an SR Suntour XCM crankset. The documentation for that crankset (http://www.srsuntour-cycling.com/bike/chainwheels/XCM-XCM-T428-SQ-OCTA-4212.html) indicates it's compatible with this bottom bracket ...


2

If you only need to remove the chain ring then a simple Allen wrench They are typically 5 mm Hex key If they spin then use a flat head screw driver on the the other end but they typically do not spin. There are also chain ring wrenches for the other side if a flat head screw driver does not work. And can use a 10 mm wench on other side but too much to ...



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