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Will a wrongly adjusted clutch grab on start-up?

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ClockworkJesu...
Nitrous Nuisance



Joined: 31 Jan 2011
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PostPosted: 00:48 - 12 Sep 2011    Post subject: Will a wrongly adjusted clutch grab on start-up? Reply with quote

So a while ago I made a post about my bike's clutch. if I fire it up from cold, pull in the clutch and kick it into first, the bike lurches forward as if the clutch was out.
if I put it into gear, engine off, and pull in the clutch, I can't move it until I've shoved the bike around to make the clutch let go.

I was told it could be an oil problem, so I changed the oil. Sadly, it didn't solve the problem.

So I was wondering the other day, could it be badly adjusted? As if it was always slightly on?
Or maybe the plates are just worn and the clutch is gumming up?
Advice?
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Souleh
Trackday Trickster



Joined: 08 Nov 2010
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PostPosted: 00:53 - 12 Sep 2011    Post subject: Reply with quote

Usually when cold youll get that kick into first due to the oil.

Its a wet clutch so even when its engaged and you select first, the oil between the plates catches a bit, giving the jolt. Its not a problem ..!

Same reason why a bike rear wheel spins when its on a stand in neutral and rev'd a bit.

As for not being able to move it in gear with clutch engaged, sounds like its not fully engaging, try adjusting the clutch cable to pull it out a bit further
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ClockworkJesu...
Nitrous Nuisance



Joined: 31 Jan 2011
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PostPosted: 00:56 - 12 Sep 2011    Post subject: Reply with quote

Yeah. I'll probably try and adjust it the best I can.
S'just annoying. Its either kick it into 1st from neutral, let it stall, and then fire up again;
or kick it into first when the engine's off, hold the front break and the clutch, and then start the bike, and let the starter motor release the clutch - which is what I've been doing.
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bouncerdove
Two Stroke Sniffer



Joined: 10 Aug 2011
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PostPosted: 21:24 - 12 Sep 2011    Post subject: Reply with quote

Hi. I have come across this problem twice and the solution was the same in both cases. The clutch plates have probably become gooed up with either the wrong oil or very old oil. This forms like a treacle on the friction plates causing them to stick together like glue. This frees off a bit when the bike is at normal running temp (just like treacle thins when heated).
One way of curing them is to remove and soak them in petrol for a few hours, then clean thoroughly. Another is to replace them.
Regards bouncerdove
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Glenben92
Nearly there...



Joined: 01 Jul 2010
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PostPosted: 09:44 - 13 Sep 2011    Post subject: Reply with quote

Deffo just the plates sticking. start the bike, clutch in, rear brake pressed FIRMLY. Rev it up a bit as you kick it into first, this should separate the plates, it's never failed for me. I always do this in the colder mornings.
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ClockworkJesu...
Nitrous Nuisance



Joined: 31 Jan 2011
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PostPosted: 10:04 - 13 Sep 2011    Post subject: Reply with quote

Alright, thanks guys! Much appreciated! Very Happy
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