There appears to be a major problem with the star shearing or the key shearing on the Husqvarna 581851501 Blade Adapter . My problem started after removing and sharpening blade prior to putting away for the winter . When I started the mower after changing oil, the blade came loose and damaged the star on the original adapter. I though I may have done something wrong until I start reading the reviews for this replacement part . There is multiple reported problems of repeated failures of this item.
Some reports that the bolt needs to torqued to at least 100 ft lbs and this will correct the issue with failure. Is there any truth to this or a recommended torque for the bolt?
The original adapter is reported to be of better quality than this replacement. supposedly it had a separate key slot instead of it being part of the casting. Is this one available anywhere? The newly ordered part is labeled sintergy no matter which vendor I choose. Is this a genuine Husqvarna part?
Has any remedy for this problem been found ? Maybe I will be lucky when I get and install this replacement but other adapters of this type from this company are having the same failure problem.