- There is significant wobble and vibration at the drive pulley, and the whole tractor shakes a decent amount at 1/2 throttle - is this indicative of a bad bushing on the flywheel shaft, or is it more likely that the pulley/shaft was bent and I should replace both the shaft and pulley? The PTO shaft can be wiggled slightly so I know that bushing likely needs to be replaced, but the lower pulley has a ton of seemingly random deflection.
--- see video at bottom!
- There is a bit of play between the knife head and the rear/front knife head caps (parts 11 and 19 in the parts manual) that allows for some slop and slapping. I removed the shims below both caps and got the gap down to appx 1/16" at the rear cap but the front cap still seems to be around 4/32-5/32" above the knife head. Is this a small enough gap, or do I need a new/replacement front cap to tighten things up? The part on there now is an unmarked piece of (almost) flat casting with a slight upward curve.
I have set (hammer tapped) the knife clips down to get the knife sections closer to the ledger plates, as the sections were essentially floating 3/8" above the ledgers for the entire length of cut. The wearing plates under the clips are in great shape and have I adjusted them forward for better contact with the bar. I straightened the bar as best I could while it has the blades on it. A project for later this summer will be replacing the individual blades and fully straightening the bar, as it was bent in just about every direction possible and a few knife sections are still floating.
After my adventures mowing with the tractor last year I have had the drag bar shortened a few inches so I can properly set the outer edge lead to approximately 1-1/4" and I have replaced the broken pitman arm. I have also leveled the blade (it was angled upwards in the front) and properly adjusted the shoes for cut height.