MacDon 974 FlexDraper - Manual (Page 29)

Form # 147083 Issue 01/07 27
APPLY DRAPER TENSION
D
F
OPERATION
To adjust delivery opening width: (continued)
4. Verify that the idler roller assembly is
bolted into the deck in the correct
position for the selected opening
size. See "Idler Roller Positioning" in
Maintenance/ Service section.
5. If increasing delivery opening width:
Cut excessive flap off of draper,
leaving 3/8" (10 mm) extending
above the connector. Trim the new
ends at the front and rear corners as shown on
previous page. This allows draper to fit properly
under draper seals to prevent tearing of edges.
Use the cut-offs as a guide for trimming. Keep the
cut-offs for use as a splice.
6. NOTE: Place connector tube so holes closest to
end of tube are at cutterbar. Connect draper with
screw heads facing center opening.
7. Apply draper tension as follows:
• Check that draper V-guide is properly engaged in
grooves at rear of both rollers.
• Tighten bolt (D) until white indicator bar is partially
hidden behind the roller support arm at (F).
IMPORTANT: To avoid premature failure of
draper, draper rolls and/or tightener components,
do not operate with tension set so that white bar
is fully hidden.
8. Slide decks to desired opening width:
• Loosen clamp (E) at top of deck. (For 36’ & 39’
Headers, there are two clamps.)
• Slide deck to achieve desired header opening
(see chart on previous page). The recommended
starting position is with decks shifted in.
• Tighten nut at clamp (E).
E
LOOSEN CLAMP TO POSITION DECK
DELIVERY
OPENING
W
X
Y
NARROW DEFLECTOR
H
STANDARD DEFLECTOR
G