190 has governor

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   I second the Doctor's opinion-  it sounds like the throttle linkage is binding at some point between the throttle blade and the governor arm shaft.  What I would do first, is disconnect the linkage from throttle, and turn throttle with fingers, then work my way through ANY mechanical joint, looking for ANY sign of binding.  Everything should be totally free to move.  Then I'd check the hook points of any springs, and apply a little lubricant to their contact points and see if attitude changes.  If it does, you found your bind.

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DaveKamp Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 6081	Post Options Post Reply Quote DaveKamp Report Post Thanks(0) Quote Reply Topic: 190 has governor Posted: 01 Aug 2018 at 7:29am
	I second the Doctor's opinion- it sounds like the throttle linkage is binding at some point between the throttle blade and the governor arm shaft. What I would do first, is disconnect the linkage from throttle, and turn throttle with fingers, then work my way through ANY mechanical joint, looking for ANY sign of binding. Everything should be totally free to move. Then I'd check the hook points of any springs, and apply a little lubricant to their contact points and see if attitude changes. If it does, you found your bind.
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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: 22049	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 31 Jul 2018 at 12:18pm
	Your friend isn't a governor man either. A "weak" spring will keep you from reaching full RPM's at high idle and that's all. The governor on a 190 isn't very good until you are up to 2,000 or more RPM'S. That's just the way they are. However, yours sounds like something is stiff or dragging in the linkage. With the engine off, set the hand throttle at about 1/2. Grab the linkage between the governor arm and carburetor and work it back and forth, checking for any stiffness or dry spots. It has to be smooth and easy to work. Oil everything including the governor spring. The governor spring should be in a straight line to eliminate dragging against the internal plunger. Correct the aim of the spring if needed. Remove the cotter pin from the yoke at the governor arm. Pull the yoke pin. The governor arm better not move one bit backwards. If it does, turn the yoke to shorten things until it just allows the pin to slide back into the arm. One turn shorter would be fine too. Try this out and see what you've got.

d17series4 Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 21 Aug 2013 Location: Huntley MN Points: 444	Post Options Post Reply Quote d17series4 Report Post Thanks(0) Quote Reply Posted: 30 Jul 2018 at 7:30pm
	I have a 190 gas that the governor is lazy. It will pull down to 1900-2000 rpms before it will start to recover. If I step on the brake firmly. It will recover to full rpms immediately. It then starts to fade away upon load. I don’t know anything about governors. A friend said the springs get weak over the years. Any ideas. Thanks