Old washing machine motor coupler break - not spinning

Hi there,

I have an older top load machine, Inglis model Superb II that came with my apartment (included in my rent).

Today I was running a cycle and it started to make a louder than usual rattling sound, so I rushed to stop it. I thought the load was uneven, but it looked fine, so I just shuffled it a little and started the machine again. It made no suspicious sounds, but at the end I noticed the clothes were very wet, as if it hasn't spinned.

I ran a cycle with nothing in and yes, it turns out the machine doesn't spin and the agitator moves just veeerrrrryyy slight, if at all.

What I tried :

- Unpluggin / repluggin - did nothing

- Check if the switch that tells the machine if the lid is closed or not functions properly - it does

- If it spins in any cycle - it doesn't

- If it spins by hand - it doesn't, whether the machine is running or not, it appears to be stuck

So I moved the machine to check underneath and found many little parts of rubber, and this :

Am I correct in my assumption that it's the motor coupler that has disintegrated ?

Other questions - Is it likely the only part at fault ?

- How difficult is it to replace? (i.e do you need a qualified repairman)? Can I find parts for an older model like this?

I'd like to give my landlord the most info as possible. Thank you !