Your throttle plate and or governor arm may be out of whack. Download a technical service manual in a pdf off the internet and follow the instructions on how to set them. Be sure to put a 6mm pin or bolt in the hole while adjusting. You want to set your governor arm prior to setting the throttle plate. I had the exact same issue on mine and that was the resolution. Good luck and be sure to set your rpms correctly for high and low speed idle. Again the technical service manual will provide info on how to do it all. They sell a little hour / rpm gauge on ebay or amazon for like 15 dollars where you just have to wrap the wire around the plug wire 4 to 5 times and it will read your rpms. :)
SOURCE: 10 hp briggs runs at high speed, govenor don't seem to be working
One possible cause for this problem is debris,sticking,or frozen linkage between the governor and the throttle butterfly. Depending on the make and model of your engine it will either be a mechanical governor that has a arm that goes down into the case or a air vane governor that is behind the recoil shroud of the engine. Move all the linkage that connects between the governor and throttle and speed lever to make sure it doesn't bind or sticks. If it does pray a little silicone or wd 40 spray on it to help reduce friction. Also on air vane governors they can become stuck from debris that inhibits it from moving make sure there is nothing in the way of the governor. If all of the linkage is working properly and you still have the issue try adjusting the the fuel mix screws and the high rev. settings on the throttle lever (if equip.).
SOURCE: Kawasaki fh641v -- appears the
Symptoms are caused by the engine running lean. Clean the fuel system including blowing out all jets in the carby. Regards Phil
SOURCE: Mower not running at set speed, choking
you should have an air/fuel mixture screw on the carb somewhere. Start the engine and turn it one way then the other a small amount at a time. One way it will get worse and one way it will get better. Keep turning till it smooths out
SOURCE: kawasaki 19hp mower model FH541V motor FH580V.
Hi,
A damaged or misgapped spark plug can cause the engine to misfire. Replace the spark plug and see if that solves the problem.
Also, check for deterioration of the insulation on the plug wire and that cap on plug wire is firmly seated.
Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,
Handie Andie
SOURCE: John Deere 14SB mower with Kawasaki FC150V series - Throttle adj.
Hello rfbarrett:
From your Description it Sounds like the Plate that is Attached to the Carburetor (that the Throttle cable Attaches to) Thru Shaft (holds and Moves the Throttle Valve) has Loosened and is Simply Turning on the Thru Shaft and Not Moving the Thru Shaft and Throttle Valve at All.
>>You can View a Breakdown/IPL of the Engine and Mower at this Site Addy, http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt and Enter the Model Numbers 14SB and Click Find. Then Select your Model from the Search Results Area. Then Select the Sectional File. Then Select the Section of the Mower you Wish to View Online. *You can Drag the View Windows for Better Viewing.*
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.
Good Luck
Respectfully
jbridger (John)
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Did you by chance ever get the answer for this problem? I have the exact same issue and it is a brand new engine. Thanks, Brandon in KC.
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