enx Posted March 9, 2019 Share Posted March 9, 2019 Hi I recently replaced factory chain and front sprocket (rear shows no wear). Sprocket is damped, and is Yamaha genuine part, and chain is EK 525 ZVX3. I'm hearing a clicking sound coming from front sprocket under acceleration. It's definitely from front sprocket, because I have tried the old OEM sprocket, and the sound was gone. Is it possible that chain and sprocket needs to break in? Rear wheel is aligned, chain free play on center stand is 30-35mm. Link to comment Share on other sites More sharing options...
Tripletrouble Posted March 9, 2019 Share Posted March 9, 2019 If your old chain is worn, it will have stretched. A stretched chain will wear rear sprocket although you might not see it. However, this doesn't explain your front sprocket clicking and not when old is back on. Odd. Are you doing this with new chain (and old front sprocket) ? Link to comment Share on other sites More sharing options...
enx Posted March 9, 2019 Author Share Posted March 9, 2019 Chain I replaced was not over streched. I replaced it, because few x-rings cracked, and chain became stiff. And yes, I tried with new chain and old front sprocket. Link to comment Share on other sites More sharing options...
skipperT Posted March 10, 2019 Share Posted March 10, 2019 If it doesn't make a sound with the old front sprocket, but makes a sound with the new front sprocket - then you need to examine the new front sprocket more carefully, or your installation of the new part. Are you sure it's not directional and maybe has an offset that you didn't notice? The only other explanation is that it's because the new sprocket has that OEM rubber damper on it that hasn't "worn in" to the chain yet, and the "clicking" noise you are hearing is due to the fact that the rubber damper hasn't "seated" with the chain yet. In which case, it would diminish in time. Or you can examine how far the chain sits into the damping material on the old vs. the new sprocket to see what I'm referring to. -Skip Link to comment Share on other sites More sharing options...
enx Posted March 10, 2019 Author Share Posted March 10, 2019 No offset, no warnings on sprocket, or workshop manual. I'm thinking the same, that rubber ring and the chain are not yet seated. Old one have quite deep grooves. Link to comment Share on other sites More sharing options...
enx Posted March 10, 2019 Author Share Posted March 10, 2019 old one Link to comment Share on other sites More sharing options...
Nuckingfuts Posted March 22, 2019 Share Posted March 22, 2019 On 3/9/2019 at 7:18 AM, enx said: Hi I recently replaced factory chain and front sprocket (rear shows no wear). Sprocket is damped, and is Yamaha genuine part, and chain is EK 525 ZVX3. I'm hearing a clicking sound coming from front sprocket under acceleration. It's definitely from front sprocket, because I have tried the old OEM sprocket, and the sound was gone. Is it possible that chain and sprocket needs to break in? Rear wheel is aligned, chain free play on center stand is 30-35mm. 30-35mm of chain slack?? That's more than double what manual states (i.e. 5-15mm) EDIT: Guess I'm learning something every day about this bike. Current model 900 manual states 35mm-45mm of slack. Interesting. Link to comment Share on other sites More sharing options...
duhs10 Posted March 22, 2019 Share Posted March 22, 2019 1 hour ago, Nuckingfuts said: 30-35mm of chain slack?? That's more than double what manual states (i.e. 5-15mm) EDIT: Guess I'm learning something every day about this bike. Current model 900 manual states 35mm-45mm of slack. Interesting. Yes the original specs of 5-15mm is absurdly tight. It's been discussed many times on the forum... Good to see that Yamaha corrected the manual to show a more reasonable value for the chain slack. '15 FJ-09 w/ lots of extras... Fayetteville, GA, USA Link to comment Share on other sites More sharing options...
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