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 Need help.

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250wrx




PostSubject: Need help.   Sun Oct 18, 2015 12:46 am

So today I finally got around installing my new front and rear sprockets, with a new chain. But we ran into a few problems and I wasn't able to install everything.

First thing when we took off sprocket nut, it seemed to have cross threaded. So now i need to order a new one, anyone know a website that sells a replacement?

Secondly when I compared the old 12 sprocket with the new 13 tooth Primary Drive sprocket, the primary drive one looked alot bigger then the old one. Can anyone with a primary drive sprocket confirm that model#:3R4-13 fits the Wr250r.

Another question, what are the torque specs for sprocket nut, rear sprocket bolts and rear axle bolt?

Any help would be appreciated! Thanks
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lancek




PostSubject: Re: Need help.   Sun Oct 18, 2015 1:14 am

Rear axel nut 125Nm
Sprocket bolts 35Nm
Front sprocket nut 95Nm
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250wrx




PostSubject: Re: Need help.   Sun Oct 18, 2015 1:19 am

Thanks
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wwguy

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PostSubject: Re: Need help.   Sun Oct 18, 2015 1:34 pm

Ebay listings for this sprocket indicate this is for for YZ250F or WR250F. There's no mention of WR250R.

The thread linked below indicated that WR250F and WR250R sprockets aren't interchangeable.

http://wr250rforum.forumotion.com/t5p40-chains-and-sprockets

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250wrx




PostSubject: Re: Need help.   Sun Oct 18, 2015 10:12 pm

@wwguy your right, the ebay seller I bought it from had it listed that it would fit YZ250F YZ125 WR250F WR250R WR250X.
Messaged the seller but doubt they send me the right size one because I ordered it almost 3 months ago. But found the right size JT sprocket on amazon, so now I just have to order the sprocket nut.
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wwguy

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PostSubject: Re: Need help.   Mon Oct 19, 2015 11:06 am

I bought both of my JT sprockets from Amazon, using part numbers from JT's website, and they worked great.

Here's one source for your nut:
http://www.partspitstop.com/oemparts/a/yam/5004d508f87002275461cef2/transmission
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mcdoudlehopper

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PostSubject: Re: Need help.   Mon Oct 19, 2015 11:34 pm

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250wrx




PostSubject: Re: Need help.   Mon Oct 19, 2015 11:39 pm

mcdoudlehopper wrote:

Yep, previous owner changed the sprocket before.  Glad just the nut was cross threaded and not the shaft.
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