Small Engines (Lawn Mowers, etc.): Craftsman lawn tractor, craftsman lawn tractor, throttle plate

Question
  Craftsman lawn tractor Model number is 917.273643
Question     18.5 horse auto transmission it will start but there is no RPM's if you put it in drive it might go and it might not. i put on a new fuel pump , cleaned the gas tank 3 times and put on new fuel filters and air filter adjusted the valves , and the governor, took the carb. off and cleaned it , the Idle mixture valve had a plastic piece on it is gone and i have taken the valve out and looked at it and adjusted the idle speed screw and the engine still won't reach RPM's high enough to drive let alone mow with. I would appreciate your help very much
Thank You
Glenn <><

Answer
Hello Glenn:

You can View a Breakdown/IPL of this Engine at this Site Addy, http://www.smallenginepartswarehouse.com/parts.asp and Select the Shop Online Parts Look Up. Then Select the Model Tab. Then Select the OEM and Enter the Model and Type Numbers. Then Double Click on the Model in the Results Area. Now you can Select the Section of the Engine you Wish to View. Select the Alternator, Controls, Electric Starter, Governor Spring, Ignition File. The Governor Spring Pulls the Governor Arm and this Pulls the Throttle Thru Shaft which Opens and Closes the Throttle Valve. By Shortening or Tightening the Governor Spring, you will Increase the Engines RPMs. The Spring can be Tightened Usually by Bending the Tab the Spring is Attached to on the Throttle Control Bracket. Also Check the Throttle Thru Shaft and Make Sure the Throttle Plate the Governor Link Attaches to is Turning the Thru Shaft and Not Just Turning on the Shaft. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.

Respectfully

John