MacDon 742 HAY CONDITIONER - Manual (Page 29)

Form # 46290 Issue 09/05 27
OPERATION
HEADER ANGLE
The header (or guard) angle can be varied within these ranges:
Combine 21’ & 25’ – 17 ° to 21° / 30’ & 36’ – 7° to 11° (cutterbar on ground)
Windrower 9.4 ° to 19.4° (Varies with center link length & lift cylinder extension. See examples in the illustration
below.)
IMPORTANT: The flattest header angles are recommended for normal conditions. A flatter header angle
reduces sickle section breakage and reduces soil scooping or build-up at the cutterbar in wet conditions. Use a
steeper angle to cut very close to the ground, or in down crop for better lifting action.
See "Windrowing" for the effects of header angle on windrow formation. See "Header Angle" in Windrower or
Combine Adapter Operator's Manual for adjustment details.
DRAPER SPEED
Draper speed affects the orientation of stalks in the delivered crop. See "Windrowing" for the effect of draper
speed on windrow formation. See Windrower or Combine Adapter Operator's Manual for adjustment details.
DELIVERY OPENING WIDTH
For windrower, the width and position of the
delivery opening affects the width and
configuration of the windrow. See "Windrowing" for
more information.
Adjust delivery opening width: 12', 15' & 18'
The center delivery opening can be adjusted to
either 56.5" (1435 mm) or 64.5" (1640 mm),
measured between the rollers.
1. Remove bolts, clamp (A) and nuts at each end
of deck.
2. Slide deck to alternate position and install bolts,
clamp (A) and nuts at each end of deck.
3. Repeat at other deck.
NOTE: A draper extension kit is available which
decreases opening size to either 37.5” or 45.5”
(955 or 1155 mm).
ADJUSTING DELIVERY OPENING
12', 15' & 18' HEADERS