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Does you shaft have a keyway on it? It has been a few years since I have worked on this model
I may be mistaken, but if there is a key way on the shaft, the key may be holding the shaft in place if it is twisted a little or damaged
what is the model and serial number of your machine?
those spindles have an outer shaft keyway. It is most likely damaged, and causing it to hang up.
each one has a key way. 2 outer shafts are the same. Center shaft has a longer keyway
here is a diagram of the deck. Will have to blow it up to see the key ways most likely. They are going to be hard to free up most likely as I have been on a job like this one, and lost of PB Blaster will be needed
I was just showing you diagram so you could see what the Key way looked like. Husqvarna purchased Dixon and being as I am a Husqvarna Dealer and certified tech I figured I would search their site for service bulletin. I will OPT out if you would like. The only thing holding it in is going to be the rust on the shaft or a mangled key way.
I am gone from my shop for the day, but I will research more when I return home. use plenty of PB blaster of lube to try and free the rust up inside. If it is the key way sticking, it may need to be replaced. I will search more when I get back home