Hi Splattapus, and a warm welcome to the forum. It's great to have another Scott Bonnar owner on board. grin

The bedknife blade (if it needs replacing) is removed by the engineer that sharpens the reel...ie. you take the cylinder reel and the soleplate (complete with the bedknife) to the engineer. He has the special tools required to remove the screws and has the new screws to replace them. The new bedknife has to be ground before re-installation in the machine.
Here is some info for you....

Myth: New bedknives are �true� and don�t require grinding.

Fact: �New bedknives are certainly not true coming from the factory. Every bedknife that gets installed on a bed bar needs to be ground properly in order to achieve a consistent quality of cut. The bedknife is the single most important factor in achieving a great quality of cut. The bedknife�s job is to position the grass before the reel blade cuts it. Depending on where the position is will depend on how clean and consistent your turfs after cut appearance will look.

Bedknives will take the shape of the existing bed bar once tightened. By grinding the bed knife properly it will give you a smooth surface that you will then align to a reel that has been ground to a true cylinder. Once this is complete you will have 2 perfectly aligned surfaces that can achieve the quality of cut that everyone is looking for. It is very important that the bed knife is ground to its proper angle (manufacturer�s recommendations) in order to maintain high quality turf grass.
Do not attempt to remove the bedknife from the soleplate yourself....the soleplate is cast iron and will fracture easily and very expensive to replace.
Hoping this helps, and once again :welcome: to the OutdoorKing forum.
cheers2


Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin