2 stage or 3 stage?

[Brushape]

Your tractor should have a manual lock pedal. They're usually close to the rear axle and require your heel to engage it. Read your OM and if you don't have one, get back to us here. There's an opportunity for damage if you don't know a couple of very simple things.

That would be great to figure out. My mower has a tuff-torq K57 transaxle. I cannot figure out how to lock it.

 

[Rustyiron]

I have to apologize, jumping in and out of a lot of different "threads", I thought that you had more of a tractor tractor than a garden tractor and have no knowledge of your Husqvarna and weather or not the axle is lockable.

 

[Slowpoke Slim]

That would be great to figure out. My mower has a tuff-torq K57 transaxle. I cannot figure out how to lock it.

I have the same riding mower. The rear diff is NOT locking.