Replacing The Cutterblades - MacDon R85 Operator's Manual

Check nuts and replace nut if:
• Nut has been removed and installed five times
• Worn height (A) is less than half original height (B)
• Nut is cracked

Replacing the Cutterblades

Follow these steps to replace the cutterblades:
DANGER
To avoid bodily injury or death from unexpected start-up or fall of raised machine: stop engine, remove
key, and engage safety props before going under machine for any reason.
CAUTION
Cutter blades have two cutting edges. Be careful when working around the blades. Blades are sharp, and
can cause serious injury. Wear gloves when handling blades.
1. Raise header fully.
2. Shut down the engine and remove the key.
3. Engage header safety props.
4. Open cutterbar door(s). Refer to
page 28.
5. Rotate disc (A) so that blade (B) faces forward and
lines up with hole (C) in rock guard.
6. Place a block of wood between two discs to prevent
disc rotation while loosening blade bolts.
7. Clean debris from blade attachment area.
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MAINTENANCE AND SERVICING
5.5 Cutterbar Doors,
133
Figure 7.40: Cutterblade Nut
Figure 7.41: Cutterblades
Revision F