Hi Joe,
Thanks for your reply.
The problem is that the "shoulder" on the disc boss is higher than the standard disc boss for the powertorques.
The "shoulder" height on the standard boss is aprox. 1.6mm. and the height on the boss with the drive pulley is aprox 2.4mm.
So if the 4 blade disc is fitted without any alterations to the disc the disc plate will wobble and spin freely as there is no pressure exerted on it by the nut and spring disc washer (square notched).
So the question is , which side is best to attach the extra washer to bring it to the right thickness?
Also :- can only source washers with a 22mm. i.d. hole at this stage.
Thanks again,
Cheers,
LS