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Date Posted: 16/04/04 21:38:34
Author: Geri
Subject: Re: ZZR1100 - How to do your shims
In reply to: Scimidog 's message, "Re: ZZR1100 - How to do your shims" on 12/04/04 23:46:40

>Richard,
>
>How many mile had you done before you needed to do
>the shims?
>
>I've got a ZZR600 with about 12,000 on it.
>The idle is a bit lumpy so I've beeen chewing over the
>idea
>of doing the carbs and shims.
>
>The manual says to check them every 6000 and to my
>knowledge they've not been done yet.
>
>Its just that 6000 miles seems a bit often, like
>a Haynes manual tells you to adjust a cars tappets
>every 6000 but it never gets done till 80,000 in real
>life.
>
>Do they really need checking that often?
>
>John
>
>

It's worth checking them. If a shim tightens up, which they are apt to do, it will burn out that valve. If they are in tolerance, or a bit loose, you have no need to do anything. If they are a bit tight, you need to take action or soon you'll be looking at removing the head and sorting out burnt valves and seats.

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