1987 $200 basket case klr650
Yes very helpful indeed. I like the fact that the overall width seems very close in both sprockets (apart from where the spacer seats that is). I can likely modify a spacer to make this gear work from what I can tell.Alright, sorry about being late with this. TLW conned me into an all-day affair making macaron yesterday. Since that consumed a lot of egg whites we've now got a lot of egg yolks left over, so I'm roped into making crème brulée today. Right now there is a break in the action.
These are the two idlers that I was able to lay my hands on. I think the one that measures .517" is the part that is listed as fitting the '84 through '95. The other one, .670", is from an '08.
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Is any of this helpful? Does the one that measures .517" look like the one in your engine?
Looking up a few posts you can see my sprocket I pulled out of my engine. It looks like your .517" sprocket but, and this is a big but, yours lacks the metal ring that seems to support the rubber on the sprocket. Now @pdwestman mentioned his sprocket was flat on the back while mine is not and neither is yours. However, from what I can gather that sprocket part number never changed until the changeover in 96. I have a theory his sprocket is flat because it lacked the metal support ring and the rubber sheered off. When searching 12046-1114, which is the the tensioner sprocket part number, I can find these two parts:
Like I said both are listed under 12046-1114. Seems like there was an issue with the rubber shearing off so metal was added. Just a theory, I may be very wrong!
Back to the point though, your pictures are very helpful and gives me hope that I'll be able to make something work. If I can get a spacer to align this sprocket perfectly I will definitely report back with dimensions for others to use