Need Help! Clutch/Trans Rattle - Kawasaki Z125 Forum
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post #1 of 24 (permalink) Old 06-12-2016, 01:40 PM Thread Starter
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Need Help! Clutch/Trans Rattle

http://https://youtu.be/MYmfpFeiRA8 Need Help. Today I noticed when warming the bike up, a short rattle around 3k rpm on rev up/down. I've got about 250 miles on the dash, haven't ragged on it, dumped it etc. oil is good and all bolts/nuts/fasteners are snug. Sound seems to be coming from right side, around the clutch area. Doesn't seem to be affecting anything, shifting, take off and downshifting is all fine. But it's bothering the heck out of me. I'm wary of driving it anymore until the dealer opens Tues and I can take it there, but I wanted to get yalls take. Any help / comments are appreciated.

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post #2 of 24 (permalink) Old 06-14-2016, 05:35 AM
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Im having that issue too bro :s
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post #3 of 24 (permalink) Old 06-14-2016, 11:22 AM
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I hear it more when the rpm falls after the initial rev. No idea what it could be and after looking around, all I saw someone mention something about a lower mounting tab on the radiator that supports the fan. But this wasn't on a Z125, it was on another kawasaki model.



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post #4 of 24 (permalink) Old 06-17-2016, 04:56 AM
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Hmmm... i see..but its a lil scary tho..it makes me feel like i dont know how to ride
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post #5 of 24 (permalink) Old 06-17-2016, 11:27 PM
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I noticed a slight rattle in my Z125 too. It appears to be the exhaust internals.

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post #6 of 24 (permalink) Old 06-21-2016, 07:21 PM
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Does the sound go away when you pull in the clutch ?

Auto cam chain tensioners are pretty prone to failure i know ive had a few kawasaki ones let go (dirtbikes) and cause wicked chain slap on decel.

Does the sound change or go away under load ect ?
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post #7 of 24 (permalink) Old 06-26-2016, 11:17 PM Thread Starter
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Still have the sound. Usually happens on the rev down, at around 3500. I've got 650 miles in it so far and it hasn't changed. Took it to the dealer, they kept it for a couple days and hooked it up to diagnostics. Nothing came up. Doesn't seem to be performance effecting or anything. Still makes me wonder. If it is exhaust related I'll know in a day or two as I have a full system on its way in the mail.
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post #8 of 24 (permalink) Old 06-27-2016, 07:48 AM
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post #9 of 24 (permalink) Old 06-27-2016, 05:42 PM Thread Starter
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Quote:
Originally Posted by Levelupfab View Post
Does the sound go away when you pull in the clutch ?

Auto cam chain tensioners are pretty prone to failure i know ive had a few kawasaki ones let go (dirtbikes) and cause wicked chain slap on decel.

Does the sound change or go away under load ect ?
Sound goes away as the bike revs past or under 3500 rpm. And it happens with clutch pulled in or released, which makes me think it could be harmonics related. Like somethings vibrating at that rev range/frequency. Like I said though has been that way since day one and hasn't changed, not louder or anything. Doesn't effect performance from what I can tell and after listening to other Zs rev, both in person and on various videos on the net, I've heard it from other bikes. Who knows. I guess we'll see as time goes on.

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post #10 of 24 (permalink) Old 07-03-2017, 02:33 PM
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Did you ever find out what the problem was? Mines doing the same thing at 3-4k rpms
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