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Drive Chain Part Number

3K views 9 replies 4 participants last post by  gsnod 
#1 ·
As some of ya know, I have a JD Model W2121, Serial #: 014417M that needs a drive chain. The sprocket is closest to the left wheel, and connected to the transmission. I think the part number may be 579851MA, or a 420 x 19 chain.

The actual chain stretched out is longer than 19 inches...it close to 23 (if I remember correctly).

Anyway, can anyone help me make sure I order the correct replacement chain. It interesting....I don't even get a response when I put my model number into the John Deere site for parts, etc.

Thanks all.
 
#4 ·
Thanks Bad69cat and 404. I think it looks like the picture in the link that 404 sent. BUT, is there any connection between the number of links and the numbers -- such as 420 x 19?

In the meantime, I'll go look at the chain to see if I can see any numbers stamped in the side. Probably best to go to TSC this weekend with the chain and match it up...
 
#7 ·
Took a look tonight and did see stamped Hitachi 41 and a total of 50 links. I've never bought chain by the length before, so this is a new experience. I see two options:

1. Buy what Kiss4aFrog suggest below, as I'm guessing that is what I need, OR

2. Go to TSC and buy a length and make my own. I've replaced links, and that is easy. I assume TSC will have the link connectors right there...

Suggestions?
 
#9 ·
That link is to Tractor Supply and it is bulk chain. I got the type 41 and 50 link from JD just wasn't absolutely positive it was correct for your exact machine.

Looks like it is :icon-clapping-smile

I had three chains on a Drift Breaker I needed to replace so I bought the 10' bulk at Fleet Farm and a chain breaker. Still less than the three and shipping and now I have the tool. I don't do chains very often or I'd spend another $10 and get the better tool.

Tru-Pitch Chain Breaker, PE2560 - For Life Out Here

Tru-Pitch Chain Breaker, PE60100 - For Life Out Here
 
#10 ·
Thanks Kiss4aFrog and all -- Yep, went down to Boston lawnmower, and they cut me a new chain type 41 for $10. Can't beat that, as I don't work too often with chains. So, I'll put the chain on and an engine, and maybe use this blower on the couple of inches we're supposed to get Sunday night/Monday morning. :eusa_clap:
 
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