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914World.com _ 914World Garage _ Carb Guru Question

Posted by: cary Apr 24 2016, 09:04 AM

Cleaning Mark's engine I found what looked like a set screw laying in the engine. After closer examination I found where it belonged. Both are missing from the left carb.

What are there purpose ? Linkage side.

Attached Image


Posted by: tomrev Apr 24 2016, 10:38 AM

QUOTE(cary @ Apr 24 2016, 07:04 AM) *

Cleaning Mark's engine I found what looked like a set screw laying in the engine. After closer examination I found where it belonged. Both are missing from the left carb.

What are there purpose ? Linkage side.

Attached Image


I think it's the set screw, that holds the choke tube in each barrel.

Posted by: Darren C Apr 24 2016, 10:51 AM

QUOTE(tomrev @ Apr 24 2016, 05:38 PM) *

QUOTE(cary @ Apr 24 2016, 07:04 AM) *

Cleaning Mark's engine I found what looked like a set screw laying in the engine. After closer examination I found where it belonged. Both are missing from the left carb.

What are there purpose ? Linkage side.

Attached Image


I think it's the set screw, that holds the choke tube in each barrel.



It's a cone ended screw and a lock nut thats missing in the photo.
These hold the Venturi in place.

Posted by: cary Apr 24 2016, 01:24 PM

That's what I thought. But wanted to check.
I'll see if I can find something at Ace that might work.

Thanks for the quick response.

Posted by: toolguy Apr 24 2016, 01:33 PM

The correct bolt should have a beveled point that sits in the venturi tube. . they are suppose to be finger / plus tight had held secure with safety wire

Posted by: cary Apr 24 2016, 01:37 PM

I'll shoot a picture of what I found tomorrow.
The nut didn't seem unique.

Posted by: ThePaintedMan Apr 24 2016, 01:37 PM

Theres usually a nut that goes over the set screw and gets tightened to the carb body, locking the set screw

Posted by: r_towle Apr 24 2016, 05:30 PM

Gotta love extra parts.

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