37 WF slow to respond on throttle

MY WF is slow to respond when I push the throttle lever up off idle. It will eventually rev up but it takes 10 to 15 seconds to respond. It does not hunt or over rev, and idles fine. My tractor has sat since the mid nineties. I had bad spoke rear wheels so I quit using it for fear of a wheel failure. I have replaced all four wheels and all four new tires and would like to show it again at tractor shows. What might be the problem with the governor not responding properly.
 
Did you try lubing linkage from governor to carb and you may have some rust in governor from setting that long.
 
If you grab the carb to gov. rod with your hand and move it to open up the throttle that way does it rev. up like it should?? If it does check for linkage binding on it. Or check that all the springs are good. Had a problem sort of like your but I could not get a D-17 or a WD45 to throttle down and it was a linkage problem
 
Take the tube off of the carb that goes to the air cleaner. Went on a service call once and the varmints built a nest in that tube to the air cleaner and it was choking off air flow.
 
The air pipe from carb to air cleaner is missing. I NEED one if anybody has one. The rod from governor to carb is free and moves easily. The motor runs fine, I cleaned the carb. Spark was never lost after sitting so many years. I had to replace the wire ends though, they were rusted and or broken. I'm thinking maybe the flyweights are not free to move or the internals of the governor are somehow sticking. I'll take the front cover off and see if it is rusty or the linkage is stiff going into the housing.
 
On both the WD45 and D-17 I have the rod from the throttle handle goes down to a cross piece and that cross piece is where I had the problem of it not be able to move as it should so you might want to trace the linkage all the way back and make sure ALL of it moves freely
 
I took the cover off the governor housing and all springs were in place, pins and keepers good, cotter pins good. No rust or corrosion. The throttle rod is straight from the control lever though the firewall to the governor. It moves freely. Inside the governor the control lever pulls on a spring with a steel pin in the center of the spring. The spring pulls up on a yoke that pushes back on a sliding bushing. It did seem a little stuck when I pried on it with a screw driver, that was when the control was at an idle, very little tension on spring. I'm going to lube it up real good with a good quality oil and put the cover back on. I will try to adjust the rods and see if a small change in rod length will make a difference.
 
That spring with the pin could be getting weak from old age and that will also cause a problem like you have
 
Does it have good power? My SC CASE sat (inside) for about four
years. When I pulled it to start it the valves must have been
sticky & bent four pushrods. Very slow throttle response and not
enough horsepower to get out of its own way.

Glenn F.
 
Yes it runs good, in fact my dad and I overhauled it back in the late 70's. New sleeves, pistons, head rebuilt, ect. It has so much compression this 59 year old can't crank it over other than one mag click at a time.
 

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