Triumphrat

Arkwright

I started a thread a while ago about shims and would just like confirmation that the black rubber washer on the needle in the pic below should NOT be there, before I put on aproper shim and reassemble my carbs....



many thanks

Tasmaniablue

Hello
Yes that is wrong, it should not be there. Shims are metal and thin. If you are tuning your bike start with the main jet and move on to needle, shims and pilot. I had shims in (as per Jenks Bolts guide) but a session on the dyno resulted in me taking them out. YMMV

Arkwright

Cheers...

I kinda knew it shouldn't be there, but just wanted confirmation.

GDCobra

Bloody hell! The bodges some people will resort to. That is why I hate anyone else working on my vehicles.

Bron-Yr-Aur

I had my carbs cleaned by a local shop. I got them back and couldn't quite get things right. After much confusion, I took things apart to find 2 shims on one needle and none on the other. This was the same guy who told me to use brake parts cleaner to clean my motor.

I, too, work on my own stuff unless I'm in over my head. It's sad when I can do a better job than a "trained" mechanic.

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denbow

It looks like an O ring. No wonder you haven't been getting many mpg, the thickness of that must be the equivalent of 4 x .5mm shims !!!