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the air filter is approximately 50 hours old and I recently blew it out with air. Does not appear to be clogged or terribly in need of changing.

I checked the end of the exhaust and it is not oily as I think MURF thought of.

I changed the oil this weekend as it was at 50 hours so I will watch the oil consumption closely.

The fuel is only about 1/8th full and I have to refill diesel tanks so we will see if fuel had anything to do with it, I will get that from a difference station.

JD 855 smoking spitting sputtering on start up oil into cylinders
John Deere Tractors
Replies 10 Post by SmittyJD

So this weekend I had sometime and I disconnect the belt from the pulley and engaged the PTO. Yikes was that thing shaking! So I would say for certain that the shaft is the problem as nothing else was hooked up and it was still going crazy. Oh, I see where someone spot welded two weights on one side of the shaft.

Thanks Hettric for the eBay link. The shaft for the 755 look slightly different but should so the trick!

Now if I could only figure out the issue...

JD 855 PTO fuse blowing various times during mowing
post: 162487

JD 855 - 60 MMMower Vibration Problems
John Deere Tractors
Replies 15 Post by SmittyJD

Thanks for the advise, I will check it out!

JD 855 PTO fuse blowing various times during mowing
John Deere Tractors
Replies 5 Post by SmittyJD