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8N Throttle Lever Wont Stay In Position

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wayne

04-11-2000 09:48:40

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You know the problem, you set the throttle lever and it moves back toward idle by the governor action...I have seen welds placed on the cowl to help hold it in position. Also have adjusted the spring around the down rod tight. Also have the horizontal helper spring on the linkage installed ok...It seems the lever underside is worn smooth and the bumps on the dash/cowl are worn also..Is there a simple fix for this that works...I have 2 9N and 2 8N and all have the same problem!!!!

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Mark (AR)

04-11-2000 12:21:18

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Re: 8N Throttle Lever Wont Stay In Position in reply to wayne, 04-11-2000 09:48:40

Wayne: I had the same problem but the ball in the lever was gone. I cut the head off of a brass, roundhead screw and fitted it in the "pocket". This way it will wear out and not hurt the quadrant plate. Has worked for about 8 months now. Good luck!!!!

Mark

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raytasch

04-11-2000 11:26:59

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Re: 8N Throttle Lever Wont Stay In Position in reply to wayne, 04-11-2000 09:48:40

Wayne, Before you go welding that lower side of the 8N throttle lever you might want to take a close look at it. There is a ball that rides in the segment notches. It has been a while since I've had one of them off but I think that ball is supposed to move around in the socket. I can not remember for sure but I think I've freed the ball by working some "juice" around it and using a little mechanical force. You may have to spread the ball socket. If you can not get the ball to rotate freely at least move it to a new location. Make sure the governor compensation spring is the right strength and installed correctly. Good luck, ray

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llamas

04-11-2000 10:03:02

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Re: 8N Throttle Lever Wont Stay In Position in reply to wayne, 04-11-2000 09:48:40

The solution on an 8N is to pull the throttle lever and build up the worn underside by welding, then grind/file back into shape. Then replace the stamped-steel throttle quadrant - they are still available brand new.

On a 9N/2N, it isn't so easy because new quadrants are unobtainable. However, removing the throttle lever and rebuilding the worn surface by welding will help a lot. You can also replace the throttle lever spring with an new one, and a stronger one if you can find it - this will pull the lever into the quadrant grooves more positively, as will bending the throttle lever down a little more. If the quadrant is really worn smooth, your only real choice is either to find a better one in a boneyard or try and build up the grooves by welding and recutting them.

I have gone so far as to build up the entire quadrant face with weld and then recut the grooves with a ball-end mill on a CNC milling machine. No, I won't do yours.

llater,

llamas

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wayne

04-11-2000 10:52:19

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Re: Re: 8N Throttle Lever Wont Stay In Position in reply to llamas, 04-11-2000 10:03:02

Thanks LLamas for the quick reply..I looked into the archives and found this is a common problem and your fix is as good as any I found...Thanks

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llamas

04-11-2000 15:58:37

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Re: Re: Re: Re: 8N Throttle Lever Wont Stay In Position in reply to don b, 04-11-2000 14:30:40

What are you asking for the 9N style quadrants, Don? I've never seen a new one for sale.

llater,

llamas

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