First time chain replacement

[Mike Ayling]

I wouldn't worry too much about the differences between the two above both are reputable chain makers.

To make life easier for cleaning and future replacement/removal, I would advise that you purchase and install a quick link if you don't already have one. Apart from anything else, the make life easier if you want to remove the chain for cleaning. This would suffice: https://www.amazon.co.uk/KMC-Unisex...33802-B07J2TXG5J-&hvexpln=0&gad_source=1&th=1

As far as getting the length, its probably easiest to count the links on your existing chain (but allow the the extra quick link you will be putting in) or calculate using the following method: https://www.google.com/search?q=chain+length+equation+9+speed&sca_esv=aaedd9f10623a379&rlz=1C1VDKB_enGB1123GB1123&sxsrf=ANbL-n7qIpedQVX_-oCZsZoyPMi1n1YJ0w:1771859422571&ei=3m2cafbNIr3XhbIP2NWr4Qc&oq=chain+length+equation+9+s&gs_lp=Egxnd3Mtd2l6LXNlcnAiGWNoYWluIGxlbmd0aCBlcXVhdGlvbiA5IHMqAggBMgUQIRigATIFECEYoAEyBRAhGKABMgUQIRigATIEECEYFTIFECEYnwVIpDxQsQdYhCRwAngAkAEAmAGAAaABkAWqAQMxLjW4AQHIAQD4AQGYAgegAuUEwgIKEAAYsAMY1gQYR8ICBhAAGBYYHpgDAIgGAZAGCJIHAzIuNaAHvx2yBwMwLjW4B9gEwgcFMC4xLjbIBxyACAA&sclient=gws-wiz-serp#fpstate=ive&vld=cid:c475f2f1,vid:Vg2SoOOrpE8,st:221

You will also need a chain breaker (to remove your existing chain if it doesn't have a quick link and to shorten your new chain to the correct length. Something like this: https://winstanleysbikes.co.uk/park...RhyrL9Y-QgXlRpRQe1_s0hT6c1zEbpVRoCzCMQAvD_BwE

Make sure you thread the chain through the transmission system properly MAKING SURE THE CHAIN GOES THROUGH THE RIGHT SIDE OF THE TAB ON THE REAR DERAILLEUR (have a look at where the chain is before you remove it - it may even be worth taking a photo of the existing chain through the derailleur before you take it off).

Hands will probably get very oily so nitrile gloves might be worth considering.

OP said he has a master link tool.
+1 for take a photo of derailleur threading

 

[BikerBob38]

To all - I searched for how to count links in a bike chain and found this video:
www.youtube.com/watch?v=QHt8FXdWsL8 2

Using his method counting '2' for the link the first arrow points to, '4' for the next and so on to the last link in the chain, I come up with 118 links.

This is the KMC chain I found on Amazon and it has only 114 links.

https://www.amazon.com/gp/product/B07J38GX7L/ref=ox_sc_act_title_1?

Is the video wrong or is there something wrong with the way I am counting links???