Wants to stall when reducing throttle…

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   I have a model B that will always stall or nearly stall if I reduce the throttle to idle quickly. If I reduce the throttle SLOWLY, the engine drops down to an appropriate idle speed. The carb is a rebuilt Zenith (model 10698A). Any ideas what’s going on or what I can do about it? 

It’s frustrating to have to be so methodical about reducing the throttle. A hand crank-start engine makes stalling not so enjoyable.  

Thanks

Chad 

Edited by Chad_in_PDX - 24 Oct 2022 at 1:29am

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Chad_in_PDX Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 01 Sep 2022 Location: Portland Points: 17	Post Options Post Reply Quote Chad_in_PDX Report Post Thanks(0) Quote Reply Topic: Wants to stall when reducing throttle… Posted: 24 Oct 2022 at 12:05am
	I have a model B that will always stall or nearly stall if I reduce the throttle to idle quickly. If I reduce the throttle SLOWLY, the engine drops down to an appropriate idle speed. The carb is a rebuilt Zenith (model 10698A). Any ideas what’s going on or what I can do about it? It’s frustrating to have to be so methodical about reducing the throttle. A hand crank-start engine makes stalling not so enjoyable. Thanks Chad Edited by Chad_in_PDX - 24 Oct 2022 at 1:29am

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DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21976	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 24 Oct 2022 at 6:08am
	Turn the idle speed screw in. Your butterfly is sticking in the bore.