Another late night, another (probably) dumb question.
 

I can see the finish line on my 126 project. Today we got it out and actually drove the machine around and took note of what shook loose. The clutch adjustment rod vibrates like mad (to be fair, the whole thing vibrates a lot) when the machine it at high RPM and the clutch pedal is not depressed. If I press the pedal in ever so slightly(the machine still drives) it doesn’t rattle. Am I correct to assume that I need to tighten the shaft a little to put pressure on it? Or is there another solution? The machine seems to shift gears fine, albeit the creeper has a slight hiccup(see my thread regarding that for context). I’m sure it’s something easy to fix but I want to ask before I make it worse.


Worth noting that the clutch has been rebuilt with new springs, plates, disc and a new bearing.


Also, just to add, the spark plug isn’t getting fuel which I assume means dirt got in the carburetor. I have that soaking in lacquer thinner to attempt to resolve it but I do have a replacement on the way just in case.

Clutch.... bushing and/or shaft at the 3 pin plate bolted to engine might be bad/worn causing shaft to wobble

Spark/fuel..... you have tractor running... why are you saying sparkplug not getting any fuel? Are you having starting issues or are you running lean?

For the bushing, do you mean the brass one?


It was running fine and then died, now it won’t fire up and no fuel to the spark plug.

trace backwards towards tank..... maybe you need more gas?

Lots of wear points on clutch adjustment parts.
Check 'em all....

Broken or missing teaser spring perhaps?
Broken main spring?
Throw out bearing bad?
Worn ends on the driveshaft proper?

The holes in the release rod as well as the holes in the hanger and the pin that secures it to the rod, to name a few.

The release rod may be worn enough to need resurfacing where it rides on the throw out bearing when the clutch is depressed along with worn and egg-shaped holes all add up to probematic clutch adjustments.

Deteriorating rag joint?

No rag joint on a 126, it's a narrow frame.
Possibly the rear coupler though, worn pins, , drive shaft end or input shaft.

Or......since we don't know his experience with old Cubs,
he may be experiencing normal vibration and looking for a skeleton in the closet.

My experience is there are some pretty crazy rattles and vibrations
on my old cubs. I make sure I have done my work well when I
tear into things. I don't chase skeletons as I.M. mentioned and
things have been running well for years. That isn't to say they don't
breakdown however. That is why a person has several. ;)

Ken