Loose front sprocket

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atreyu
Posts: 13
Joined: Tue Jul 20, 2010 10:31 pm
My Bike: ZXR400

Loose front sprocket

Post by atreyu » Sun Aug 22, 2010 4:46 pm

Hi All,

Just had my chain off to clean it and get some crud out from around the front sprocket cover.

Anyway, The sprocket is held on with a flat plate (over the sprocket) with 2 bolts through, as im sure your all aware.

The sprocket wobbles a fair bit when tightened up, if the sprocket was bolted upto the output bearing "solid" it wouldnt wobble at all!

Im a little confused why kawasaki decided to hold the sprocket on in this way (instead of a nut on the shaft), what can I do about the wobble? The splines are slightly worn but nothing major, its just the fact of that stupid plate allowing it to move around.

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CaNsA
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Re: Loose front sprocket

Post by CaNsA » Mon Aug 23, 2010 7:43 am

I had the same panic thing last year.

Its supposed to have a bit of play in it, something to do with reducing stress on other parts.
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cargo
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Re: Loose front sprocket

Post by cargo » Mon Aug 23, 2010 8:54 am

YOU DA GANSTA


The teeth on the splined washer can become worn and damaged with time and miles

zxr500man
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Re: Loose front sprocket

Post by zxr500man » Mon Jan 24, 2011 3:35 pm

does anyone know for sure if the l front sprocket will fit the h model,my guess is it will but not 100%.
any help much appriacated :smt003

cargo
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Re: Loose front sprocket

Post by cargo » Mon Jan 24, 2011 4:38 pm

yep I do know for sure........................


















































































And yes it does fit

Big Al
Posts: 8
Joined: Fri Oct 01, 2010 8:18 pm
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Re: Loose front sprocket

Post by Big Al » Sat May 14, 2011 10:56 pm

know it's been a while since posts about wobbly front sprockets but thought would share this just in case it helps. Recently changed front / rear sprockets and chain on my L3. I did have a wobbly front sprocket that "knocked" when the bike was being pushed ie in the garage and smooth up changes were becoming a real hit and miss affair :smt009 . However, this has been cured with the new cogs :smt003 . Found the female splines (the ones in the sprocket) were slightly worn. The locking plate splines were not worn, but this plate only stops the sprocket moving along the output shaft by being slightly miss aligned with the splines on the shaft once it is bolted up (8.5Nm in manual with NO thread lock). If your front sprocket wobbles then i recommend you get a new one.If your lockin plate looks worn, get a new one as it wont do it's job. Also check the surface the cog sits up agains for any wear / damage, the cog does not sit against the output shaft oil seal! slack or over tight chain and miss-aligned rear wheel will contribute to front sprocket wear, along with shed loads of wheelies !!!!! :excited
This is my new set up: 14T front / 46T rear / Tsubaki 520 ORG 110 Link chain (wheelbase virtually unchanged) - Adds 1000rpm in 6th ie. 70mph = 8000rpm top end looses about 12mph but midrange is vastly improved (not difficult) and makes overtakes alot brisker

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