SM52 Slow down o-ring fittment

Hi Everyone, I am looking for some guidance, does anyone know how to fit the slow down o-rings on a SM52 is it a straight forward job?

 

If it's the same as the old M series machines, you just loosen the screw at the back and snap them on?

Sorry, I have just seen them, they are different, ignore my above post.

 

There should be a plastic clip on either side of the main drive shaft of the slowdown wheels. Remove these two clips. There are bearing rings on the outside of the plastic clip that should slip to the side and will allow you to remove the shaft. Remove shaft and replace O Rings.