Briggs & Straton 20 HP, two cilinder engine idle speed

You have governor with a missing spring or it could be in the wrong place. If the springs are all OK then you may have a bad governor gear in the crankcase. This engine is bad about the governor gears bending the governor gear shaft.

Apr 25, 2009 • Craftsman 20 hp 42 in. Deck Lawn Tractor -...

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Tom

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Posted on May 17, 2010

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Surging is usually caused by a lean condition You can try to turn the mixture screw ccw about 1/4 to 1/2 turn. If this does not solve the problem your carb will have to be removed, cleaned thoroughly, and reinstalled.

Oldmanfunk Aug 14, 2011

These 20hp single barrel vertical carbs do not have a Idle mixture screw. There was a cap that covers the location where one would find the IMS, but once removed, there is nothing there. I have never seen a carb without a idle mixture screw.

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Tom

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Briggs & Straton 20 HP, two cilinder engine idle speed

1 Answer

Tom

Add Your Answer

Attachments: Added items

Related Questions:

Craftsman 20 HP Briggs/Straton run okay with choke out partway. Then it hardly will run and fuel filter has very little gas in it. After about 30 seconds of fiddling with the chock, the filter starts...

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I have a craftsman Lawn tractor with a briggs and straton engine - model number 311707. The dip stick indicates that the engine oil is low, but when I add oil to bring level up to full the engine begins...

Hi I have a Craftsman LT1000 with Briggs And Stratton 17.5 HP Engine ohv, it has always been fine. Then it went downhill. First it started getting gas in the oil while not running, so I installed a...

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Craftsman dls 3500 briggs and straton motor. engine does not want to start with choke but will turn over at turtle speed.

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Craftsman 20 HP Briggs/Straton run okay with choke out partway. Then it hardly will run and fuel filter has very little gas in it. After about 30 seconds of fiddling with the chock, the filter starts...

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