New Clutch and New Drive Chain - Juddering

White Naked One · L Plate Warrior Joined: 22 Aug 2018 Karma :

Just bought FZR600 with brand new clutch, drive chain, sprockets. Bike juddered a lot on take off and needed a lot of clutch slipping to take off without juddering. Seller said it needs time to bed in. Done about 100 miles and it has gone much better but it's still there. Hoping it will go altogether soon. Had clutches fitted on other bikes before without this judder, is it usual on the FZR's?

jaffa90 · World Chat Champion Joined: 06 Apr 2016 Karma :

Were these clutch plates soaked in oil before fitting?
Also what chain slack have you when laden?

arry · Super Spammer Joined: 03 Jan 2009 Karma :

Could be as simple as knackered cush drive rubbers if they've had it all apart and not replaced them.

White Naked One · L Plate Warrior Joined: 22 Aug 2018 Karma :

Drive chain a bit slack. Will tighten it. Not sure if that would cause the juddering though.

pompousporcup... · World Chat Champion Joined: 15 Apr 2015 Karma :

did he fit new plates to the old basket? My old yzf used to judder a bit without lots of revs.. the basket teeth were worn so the plates has a lot of movement..

Polarbear · Super Spammer Joined: 24 Feb 2007 Karma :

If you do the obvious - chain tension, cush drive rubbers, cable tension and it doesn't really help you are left with 2 choices.

Leave it be and hope it does bed in properly.

Take it apart and check what the previous owner has done.

It really all depends on actually how bad it is. Mildly annoying or bloody frustrating. Laughing

It's actually a pretty easy job to do on most bikes (I've never done an FZR so I can't say for certain but most IL4 Japs are a piece of piss) so with a manual, whip it apart and check everything.
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White Naked One · L Plate Warrior Joined: 22 Aug 2018 Karma :

The chain had about 2 inches drop so tightened it to 1 inch and I know this makes me look a dummy for not checking earlier but tyre pressure was 18 in the front and 25 in the rear so sorted that too and it has made a difference. Yes the clutch is still a bit snatchy and the brakes too as brand new but much better. Looks like the clutch discs weren't oil-soaked prior to fitting so a couple of hundred miles of use should hopefully sort it.

P.addy · Red Rocket Joined: 14 Feb 2008 Karma :

You don't have to soak them, people do though. I never have but some literally leave them soaking.