Hart Par 18-28 carburetor to throttle /governor linkage

andy r

Member
Neighboring farmer called me and requested some help on getting the carburetor back on a Hart Par 18-28. He had the carburetor rebuilt over the winter and couldn't figure out how the throttle/governor linkage all went back on. He didn't take any pictures or make any drawings when he took it off. Looking at the attached picture one would believe the little green lever laying against the engine block goes under the brass lever on the carburetor. Makes sense that when you move the throttle to the right the green lever raises and lifts the brass lever opening the throttle plate. The problem is the little brass lever has a groove worn in the top of it like the green lever was pushing down on the brass lever. Looks as if the governor is on the righthand side of the tractor and the linkage actually comes through the engine block. I think I have the governor contact points figured out, but any information there would help as well. Pictures, a drawing, or comments would help. Appreciate it. Thanks.
cvphoto88918.jpg
 
The green lever will push down just as the wear pattern shows. Those tractors have a limiting speed governor. The lever you move at the operators platform controls speed by only allowing the throttle shaft to move until the lever stops it. Any rpm above governed speed is controlled by the other paddles on the cross shaft and throttle shaft. There should also be a torsion spring between the governor cross shaft and throttle shaft keeping them in contact. in the wide open position the paddles should be in contact and the others won't be touching even close. If you search the archives I posted pictures about a 28-44 to banjoman awhile back. I can't find my pictures but they are in the post I just searched it. His picture shows the spring but he has the linkage wrong and mine are further down.
 
Andy youre missing the torsion spring that goes between the two levers. I got mine from Korves Oliver in Waterloo Illinois. 618 939 6681. Good people to deal with. Hope this helps good luck
 

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