214366 144 Revision A
1008434
A
B
Figure 5.20: Cutterblade Nut
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 header safety props before going under machine for any reason.
CAUTION
Cutterblades 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 the header fully.
2. Stop the engine and remove the key.
3. Engage header safety props. Refer to 3.3 Engaging and Disengaging Header Safety Props, page 28.
4. Open the cutterbar door(s). Refer to 3.5 Cutterbar Doors, page 33.
1004656
A
B
C
Figure 5.21: Cutterblades
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.
MAINTENANCE AND SERVICING
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