Stihl FS 490 C-M Instruction Manual - Page 28

English Removing and Installing Metal Cutting Attachments Check direction of rotation of cutting attachment Keep the leaflet and packaging of the metal cutting attachment in a safe place. WARNING Wear protective gloves to reduce the risk of direct contact with the sharp cutting edges. Mount only one metal cutting attachment. 1 2 Mounting Grass Cutting Blades, Brush Knife 4 3 2 1 b a 0000-GXX-0421-A0 002BA409 KN Notice on new machines that come standard with a mowing head only: A "metal mowing attachment mounting kit" is required to mount a grass cutting blade or brush knife. Kits are available from your servicing dealer. 3 4 The cutting edges of the cutting attachments 1 and 2 must point clockwise. Cutting attachments 3 and 4 may be mounted either way round - they must be turned over regularly to help avoid one-sided wear. N Use guard ring for mowing attachments. N Place the cutting attachment (1) in position. WARNING Collar (a) must locate in the cutting attachment's mounting hole (b). Securing the cutting attachment N Fit the thrust washer (2) - convex side must face up. N Fit the rider plate (3). N Block the shaft. N Fit the nut (4) counterclockwise and tighten it down firmly. WARNING If the mounting nut has become too loose, fit a new one. NOTICE Remove the tool used to block the shaft. 26 FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L