It is not an improvement and never was meant to be
The star system used to hold their blades works perfectly and rarely gives any design problems other than breaking off one of the mounting lugs when the blades strike a solid object because there is not enough slip in the system .
And Husqvarna addressed that by going from 3 bolt to 4 bolt spindle housings .
It originated from the marketing department as a sales feature to encourage people to buy their mower over the almost identical JD
Much like the No Oil Change briggs engines.
They paid some PR mob a lot of money to poll consumers to find out what was the most difficult / onerous task maintaining their mower and no surprise that blade changing came out tops because most Joe Average's do not have a big enough rattle gun to easily shift the bolt nor a tension wrench to replace it .
The biggest problem with Husqvarna mowers is the flimsey thin blades that bend if they hit a fart which is why I don't fit them , particularly their rubbish mulching blade which I regularly find fitted upside down .
They are really only suited to places that snow so have fine soft grass in the spring.
I have some old Cox & Greenfields mowers that I loan out during spring when I get overwhelmed
Just about every one who has used them wants to buy them off me rather than going back to their orange junk piles and quite a few sell their current model & go pay twice as much for a used Greenfields or Cox which costs 1/4 to maintain and 1/2 to 2/3 to run as they don't fit massively overpowered engines to cover up poor deck designs ,
