2004 FZ6 N - transmission "slack"? - Yamaha FZ6 Forums - FZ6 Motorcycle Forum
 
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post #1 of 2 (permalink) Old 05-17-2015, 02:39 PM Thread Starter
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2004 FZ6 N - transmission "slack"?

Hey guys, first timer here. I have an issue that's really getting on my nerves. Like the title says I have a 2004 FZ6 N with 59.000 km on the clock.

I've been searching the net for a solve to my issue and the closest thing I could find was on an aprilia forum. I'll quote the guy, he explains it in detail and it's the exact same issue I have:

"Hi Guys,


I have a 2003 model with 6500 miles on the clock.

Is any of you getting driveline slack on your capo? I.e. a 'delay' between accelerating and the rear wheel responding. And an obvious clunk once the chain begins to pull on the rear wheel.

I know that certain amount of slack on the gearbox and the output shaft are needed to make shifting easier, as these gearboxes don't have synchros, and I also know that certain bikes are worse than others (Yamaha FZ6!!), so I wanted to run this past you guys before I really start worrying.

It manifests itself at all times, but gets worse in higher gears and lower revs. So if I'm in 4th at 3k, throttle off and then throttle-on again I get a positive delay and a clunk before I get drive on the wheel.

It also happens when changing gear because I have to throttle-off and on. In between I get the clunk.

I just want to make sure that there's no known issues with output shafts or the like because I'm still within the 30 day warranty offered by the dealer I bought the bike from. So if there's something wrong I'll get them to fix it.


Cheers Guys!


Mich"


I'm not too good with motorcycle engines/transmission, most of the parts they mention I don't recognize, but that may be related to the fact that I'm not a native English speaker.

Anyway, would love some insight on this and what I could do to improve it.
I've had the bike for 3 years now and haven't done any major service or tear-down on it.
I can't remember if it did this when I bought it because it had a busted chain and was running really poorly and I took it to a shop to have a new complete kit installed, new pinion and sprocket everything.
Tomorrow I'm scheduled to take it for a TB resync as I've never done it in 3 years.

Otherwise the bike shifts ok (with the loud clunk this model has), doesnt stall, idles fine and pulls good, except for that "delay" which makes it really hard to twist the wrist while cornering...
I always feel my passenger gripping me tight whenever I get on the gas as the power is not linear and it jerks, so it's not just me imagining it. :P

Cheers from Romania,
Radu

Edit: I meant to say: "Most of the parts they mention in the thread, the discussion went on for a couple of pages".

Last edited by raduph; 05-17-2015 at 02:42 PM.
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post #2 of 2 (permalink) Old 07-09-2018, 05:59 PM
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Join Date: Jul 2018
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I have an 08 that is doing this same exact thing. Got a new chain got a little better but now its back and I feel its worse. Did you ever figure out the issue? Its driving me nuts and worrying me.
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