MacDon FD75 OM - Manual (Page 321)

MAINTENANCE AND SERVICING
3. Position poly wear plate (if applicable), replacement
guard (A), adjuster bar, and top guide (B). Install bolts,
but do NOT tighten.
IMPORTANT:
Ensure center guard (A) (right of cutterbar split)
has offset cutting surfaces.
NOTE:
Top guide (B) must accommodate the two
overlapping knives at center guard location on
double-knife header.
Ensure replacement is
correct part.
4. Check and adjust clearance between hold-down and
knife. Refer to
Knife Hold-Downs, page 309 .
Figure 6.104: Double Knife Guard
A - Knife Guard B - Top Guide C - Normal Guard
Replacing Stub Guards on a Single-Knife Header
WARNING
To avoid bodily injury from fall of raised reel, always engage reel safety props before going under raised
reel for any reason.
Stub guards are designed for cutting tough crops and are factory installed at the outer ends of specific headers.
169894 307 Revision A