Mixture screws

[phxgs425]

So I was getting my carbs ready for a bath and I discovered my left carb is missing a spring on the mixture screw. How important is this spring and does anyone know where i can get a new one aside from digging around in the hardware store?

79 gs425

[ikantbreave]

I thought I read once of someone cutting a spring out of a pen to fit.

[Big T]

Did you look inside the carb?

They often stick inside

[phxgs425]

i looked, its MIA.

[Big T]

Pen spring, or a trip to Ace Hardware

[Steve]

Besides the spring, you should also have a small washer and an o-ring on each one.

.

[pete]

That's the spring I recently lost and then the house mate found.

I tried for about a week or two to get a replacement before the house mate found it, and good luck finding one. Suzuki have no part number listed for it anywhere as those are sealed from the factory from '79 onwards, and the earlier models where they aren't sealed don't fit.

Put the other one in a sealed plastic bag (big enough so it's hard to lose) and take it with you to find something suitable from a hardware or whatever...

[s276l]

My 82 gs550 mixture screws have no spring, washer or oring in any of the carbs. Should all 3 be on mine?

Do you put on oring first, then washer, then spring?

Thanks,
Sean

[pete]

Actually I had no washer on either of mine, just an O ring and spring.

The shape of mine is similar to the OP's pic but the heads of the screws weren't the same, and I can't see any indication on mine there was supposed to be a washer there, but the 425 I'm not sure on.

[phxgs425]

the one on the right appears to be complete for the gs425. no washer. just the o-ring (shown) and the spring. the 425 carbs are different than the 400 and the 450.

[pete]

Yeah they certainly look different! Guess that goes with the 8 valve head and roller main bearings too...