Mowing JD X300 transmission problems

RBLapham · Dec 23, 2017

buickanddeere said:
With the K46 transaxle failure is a matter of when , not if. The X370 is the first tractor in the line with a beefy transaxle .

The K57 in the X370 is just a little better then the K46 - adds a pre-charge pump. The X500 series and up have much much better transaxles.
Also TT has manufactured over 6 million K46s you would think if they were that bad there would be 100 posts a day complaining. Some have asked dealers and repair shops about them and most say they never saw one go bad.

DLTTrekkers · Dec 24, 2017

I had a client with a flat tyre and after the repair it will not move.....he lost the key on the axle !

bmg88201 · Mar 24, 2018

I thought I would give an update on my 2010 X300 transmission, I changed the oil in my K46 last fall for the first time with 5-50 synthetic and parked it for the winter. I have already mowed twice this Spring and it seems to be doing fine. I'll probably change the tranny oil again this winter one more time and then every three or four years after that.

bmg88201 · Oct 22, 2024

Just pulled the K46 tranny and changed the oil with 5-50 synthetic again. The fluid looked pretty clean and didn’t smell burnt. The magnet was clean too. My habit has been every 2 years to change the fluid. Which amounts to around 150 hours. The 2010 X300 has been reliable for the most part except for blade spindles, ugh !!! When this mower dies on me, I will not buy another JD product. They can keep them in Mexico for all care. Recently my closest JD dealer has closed, now I have to drive 60 miles round trip for parts, if needed.