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Old 01-19-2013, 07:07 AM   #6625
Royal Club
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Joined: Jul 2012
Location: The Netherlands
Oddometer: 392
Originally Posted by Captain115 View Post
Hi everyone,

So I pulled the front sprocket off my 89 XR600 to check the sprocket type, number of teeth and see if there is any wear on the splines of the countershaft.

Turns out it's a 14 tooth JT sprocket. I know about the hardened sprockets destroying the splines by the counter shaft actually looked very good, almost no noticeable wear. Anyway, I went to re-install it and for the life of me I couldn't remember which way to install it: flat side out, or lumpy and written side out?

Jumped on the net but seems there are lots of different answers, which made me quite confused. Note that this is an 89, so has the 6 thick splines if that changes anything? As it was, the flat side was out but I thought that wouldn't the lumpy written side be out normally so you can read the info (number of teeth, brand, etc)?

I've been rebuilding my XR, and had the same question, mounted it both ways and for me the sprocket sat best with the lumpy side OUT it aligned good with the nylon chainslider and with my fierce eye of precision It did too with the rear sprocket..
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