MacDon 974 FlexDraper - Manual (Page 31)

Form # 147083 Issue 01/07 29
OPERATION
END DELIVERY: WINDROWING WITH THE COMBINE (continued)
10. Adjust header flotation to compensate for the shift in weight. See "Header Flotation”.
11. NOTE: For 974 Headers, engage the wing float lock out pins to avoid interference at cutterbar hinge when
end delivering. See page 23.
12. For rotary combines with narrow feeder opening, increase delivery opening width to be suitable for
windrowing. See "Delivery Opening Width", beginning on page 26.
13. If header drapers catch on feed draper deck or deflectors, adjust feed pan spacer plate. See “Feed Pan
Clearance Adjustment” in 873 Adapter Operator’s Manual.
REEL SPEED
• Reel speed affects feeding of crop into the
sickle and onto the drapers, as well as the
smoothness and evenness of the delivered
crop. Operating the reel too fast or too slow
relative to ground speed will cause bunching.
• In standing crop, reel speed should be just
faster than ground speed, sweeping crop
across the sickle.
• The more "down" the crop, the faster the reel
speed should be in relation to ground speed.
This can be achieved by increasing reel
speed, decreasing ground speed, or both.
• Excessive shattering of grain heads or crop
loss over the header back tube may be
indications that reel speed is too fast.
Excessive reel speed causes undue wear of
reel components and unnecessary load on
reel drive, resulting in uneven reel motion.
• A high torque reel drive sprocket (11 teeth) (A)
is standard on the Header. The high torque is
required for many conditions such as rice and
other heavy crops. An optional high speed reel
drive sprocket (17 teeth) is recommended
when operating at speeds over 6 mph (10
km/h). Two links of chain need to be added
when converting from high torque to high
speed. See your Dealer Parts Department to
order the optional sprocket and chain.
REEL HEIGHT
• Depending on crop height, adjust reel height to carry material through the sickle onto the drapers.
• Down crop will require a lower reel height to wipe crop off the sickle.
• Bushy crop may require raising the reel to prevent unevenness in delivery.
• Indications that reel may be too low are crop loss over the header back tube, or disturbance of crop on the
drapers by the reel fingers.
A
REEL DRIVE SPROCKET – HIGH TORQUE
STANDARD, HIGH SPEED OPTIONAL