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  • 1 Post By Taffy
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August 23rd, 2020, 02:31 AM   #1
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From: Italia

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I Ride: Husaberg fs 650 2007
Noise from the transmission

After my lap I noticed that with the bike off and in neutral the transmission is noisy. I noticed the chain a bit tight, I removed the chain and it seemed a bit hard to bend so I will wash it with diesel and dry it and finally grease it, once mounted I will adjust the chain play. But now I have noticed that the pinion is noisy.

https://youtu.be/dyJUIxiZ7So
The shaft has no signs of wear and has no radial clearance that suggests bearing failure.
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August 23rd, 2020, 11:20 PM   #2
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I Ride: Husaberg fs 650 2007
I disassembled and washed the chain with diesel. Then I cleaned the pinion and crown with a scraper. The chain links were a bit hard to move so I started to rotate the links one by one and the chain has softened, now it looks ok. I reassembled everything and adjusted the chain slack because it seemed a bit tense before. It now appears that the transmission makes a normal noise when I move the bike from off and in neutral. To grease the clean and degreased transmission, I raised the bike on a lift stand, turned on the bike and engaged the first gear and so I greased the chain while it was in motion. I noticed an annoying shaking every 4-5 seconds of the transmission, as if the engine had misfires. I played with the mixture screw but even if I could hear the engine go from a dry tone to a lower and softer one, the problem of misfiring does not go away.
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August 24th, 2020, 02:39 AM   #3
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it will be in rythym to the chain reaching the same place everytime or the rear wheel. it is likely the chain. Mark the sprocket and the chain and see if there's a rythym.

as for the sprocket, is the sprocket 12mm wide? 3-6-3

regards

Taffy
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