Dolmar MS-335.4 U Instructions D'emploi D'origine page 12

Mounting of metal blade
With the hex wrench still in place.
– Mount the metal blade onto the shaft so that the guide of the receiver washer
(4) fits in the arbor hole in the metal blade. Install the clamp washer (3), cup
(2), and secure the metal blade with the nut (1).
[Tightening torque: 13 - 23 N-m]
NOTE: Always wear gloves when handling the metal blade.
NOTE: The metal blade-fastening nut (with spring washer) is a consumable
part.
If there appears any wear or deformation on the spring washer, replace
the nut.
Mounting of nylon cutting head
– The clamp washer (3), cup (2), and nut (1) are not necessary for mounting
the nylon cutting head. The nylon cutting head should go on top of the
receiver washer (4).
– Insert the hex wrench through the hole in the gear case and rotate the
receiver washer (4) until it is locked with the hex wrench.
– Then screw the nylon cutting head onto the shaft by turning it counter-
clockwise.
– Remove the hex wrench.
– Make sure that the blade is the left way up.
(4)
Hex wrench
Rotation
12
Hex wrench
Loosen
Tighten