Cub shifter stuck

Stuck how? Lever won't move? Lever won't move in one direction or the other? Lever wiggles but won't move far enough to shift anything? Lever moves but doesn't have any effect? Different symptoms call for different fixes. Start by taking the top cover off and looking at things. That would be step one for most problems anyway. If you don't see the problem, post a couple pictures of the transmission with the cover off.
 
I agree. 8 small bolts and you can have the shifter off in about a minute if you use power tools, three minutes if you use a hand ratchet.

The Cub is a very simple transmission. Two shift rails, two forks. Everything can be seen from above once the shifter is removed. I'm betting you'll find rust on the shift rails and forks. Some of your favorite penetrating juice, and gentle persuasion will get things moving again.
 
If freezing temps have been around for a couple days
like we've had here, suspect ice from condensation
locking gears.
Grandson got an A & he went to move it---wheels
slid on the ground when pulling it. Either ice in the
tranny or in the final drive "cups".
Jim
 
Start by draining the old oil, which is probably half water anyway. Then spray the whole insides down with kerosine or Diesel fuel. Then go after it with a brush and rinse with more Diesel fuel. Once it is cleaned up so you can completely inspect it, find the location(s) that are stuck and go after them with penetrating oil and tap or pry on them until they move properly. After everything moves, do a final clean-up and let it drain at least overnight. Then refill to the level plug with gear oil or Hy-Tran.

Others may have some additional suggestions. But this basically covers it.
 
I just "freed" up mine. Has been sitting for 4-5 years and would not shift into 2/3 but would shift into 1/R. Pulled the cover and it wasn't too rusty but it was there. Drained the transmission and 2 gallon of water sprayed out first then some really sad looking oil. Ran a gallon or so of diesel to rinse the water and rust out. Used a hammer and punch and tapped the shift railed back and forth - then it began to shift easily into all gears. Make sure you only TAP.
 
It warmed up enough yesterday to check for water
in the tranny on that A. Pulled the drain plug, & got
a little over a quart of water. Pulled it around to a
different spot out of the snow pushing area, & it rolled
nicely. Have to check out the final drive "cups" next
week. Supposed to get '50s middle of next week.
Maybe.
Jim
 
^^^^Have some gasket paper handy so you can make new ones after removing the pans. I would recommend having some cardboard or rags on rear tires and floor to catch the lube if it is filled to capacity. May have to scrape out some crud in the pans themselves. Tractor Supply has a 2 gallon jug of SAE 90 gear lube for a reasonable price.
 
IF the shifter and rails will come out individually I would probably use a light grease on the rails and lever to keep them covered like Cosmolene is on parts to keep them from rusting if not used on a regular basis. Storing inside helps immensely also. Best is regular use even if only driving it around the yard for a half hour each time. IT will splash oil up on things and warm the transmission up when used on harder work thrugh out the year. Warming the transmission up will need more hours in a suscessive use like working for a day at a time on a disc or plow even just pulling logs up to cut for wood is good use for it. Don't just idle it around wind it up so the oil is slung around to the top .
 

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