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Choke thread size on a SH20 carb?

PostPosted: Thu Aug 29, 2024 5:01 pm
by Scooterslag
as above- thanks Paul

Re: Choke thread size on a SH20 carb?

PostPosted: Tue Sep 03, 2024 11:39 am
by Knowledge
I don't know, but why do you need to know?

This area is prone to problems/damage and there are some work-arounds depending on the issue.

Re: Choke thread size on a SH20 carb?

PostPosted: Tue Sep 03, 2024 2:52 pm
by Scooterslag
Knowledge wrote:I don't know, but why do you need to know?

This area is prone to problems/damage and there are some work-arounds depending on the issue.


Yes Martin, I didn't screw in the choke unit properly and caused slight damage to the threads. Wanted to see if I could tidy it up a bit. Cheers Paul

Re: Choke thread size on a SH20 carb?

PostPosted: Tue Sep 03, 2024 6:54 pm
by Knowledge
There is stuff about this on page 168 of Sticky's green book. He uses a hammer to give the thread a bit more grip.

I think the thread is already cut a few millimetres deeper than is required and I have seen a work-around where the top few millimetresof the boss on the carb are carefully hack-sawn off to present fresh, undamaged thread for the choke to screw into.

Re: Choke thread size on a SH20 carb?

PostPosted: Tue Sep 03, 2024 8:41 pm
by Scooterslag
Knowledge wrote:There is stuff about this on page 168 of Sticky's green book. He uses a hammer to give the thread a bit more grip.

I think the thread is already cut a few millimetres deeper than is required and I have seen a work-around where the top few millimetresof the boss on the carb are carefully hack-sawn off to present fresh, undamaged thread for the choke to screw into.


That second solution sounds interesting, thanks for the info Martin, cheers Paul :)

Re: Choke thread size on a SH20 carb?

PostPosted: Thu Sep 05, 2024 8:16 pm
by Fast n Furious
It's M8 x 1.00

Re: Choke thread size on a SH20 carb?

PostPosted: Thu Sep 05, 2024 11:46 pm
by Scooterslag
Fast n Furious wrote:It's M8 x 1.00


Thanks F&F - cheers Paul ;)