john stones 1 - Moderator Posted March 3, 2020 Share Posted March 3, 2020 This is off a DLE carb, the butterfly ? on throttle pin, you can see a little half moon shaped bit, what's it's purpose ? I'm curious. Quote Link to comment Share on other sites More sharing options...
Don Fry Posted March 3, 2020 Share Posted March 3, 2020 I've got lots of washers with a bite. Happens when the tooling on the machine is starting to stick, and the last washer didn't get away in time. Could be wrong. Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted March 3, 2020 Share Posted March 3, 2020 Can you see that at the 1 o'clock position in your photo, there is a small segment cut out of the edge of the throttle plate? That means that there is a right way and a wrong way to fit the plate.Also, the edges of the plate are not at 90 degrees to the face due to the way that the plate sits in the carb venturi. The idea of the "half moon stamps" is that the curved part that sticks out on the rear face of the plate (not visible in your photo) is fitted tight up against the throttle shaft when assembled. The stamps are therefore fitting guides. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 3, 2020 Author Share Posted March 3, 2020 Posted by Gary Manuel on 03/03/2020 21:03:17: Can you see that at the 1 o'clock position in your photo, there is a small segment cut out of the edge of the throttle plate? That means that there is a right way and a wrong way to fit the plate.Also, the edges of the plate are not at 90 degrees to the face due to the way that the plate sits in the carb venturi. The idea of the "half moon stamps" is that the curved part that sticks out on the rear face of the plate (not visible in your photo) is fitted tight up against the throttle shaft when assembled. The stamps are therefore fitting guides. I know, it was me highlighted the little doodah, put a mark on to get correct assembly as well. What's the little nibbled bit for ? it's there on other carb. Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted March 3, 2020 Share Posted March 3, 2020 The little nibbled bits are what I've called "half moon stamps". Hang on, I'll do a sketch. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 3, 2020 Author Share Posted March 3, 2020 Posted by Gary Manuel on 03/03/2020 21:23:06: The little nibbled bits are what I've called "half moon stamps". Hang on, I'll do a sketch. Not the stamp, follow the outer, there's a bit not there, it's not there on other carbs, why and what's it's purpose ? Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted March 3, 2020 Share Posted March 3, 2020 Ah that. That's to control fuel flow at tickover. Very important that it's aligned with the low speed jet outlet. That's why the half moon stamp is there. I've done the sketch. It might help. Some plates have holes in them - depends on the design / purpose of the carb. Edit - "Flat part of the plate BEHIND the plate" should read "Flat part of the shaft BEHIND the plate". Edited By Gary Manuel on 03/03/2020 21:56:03 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 3, 2020 Author Share Posted March 3, 2020 I figured that then, the low speed outlet would be the bottom hole (furthest from fuel nipple) there's holes opposite each other and carbs been taken apart before I owned it. Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted March 3, 2020 Share Posted March 3, 2020 Presumably you have the carb stripped. If you have a carb cleaner aerosol with an extension tube, try removing the each needle and squirting into there. You should see where each jet goes. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 3, 2020 Author Share Posted March 3, 2020 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 3, 2020 Author Share Posted March 3, 2020 Good to go now. Quote Link to comment Share on other sites More sharing options...
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