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presets. Where applicable, this manual contains instructions for presetting reel height on selected combines. Refer
to 3.8 Auto Header Height Control (AHHC), page 124.
Table 3.17 Reel Height
Crop Condition
Reel Position
Lodged rice
Lowered (also change reel speed and/or cam setting)
Bushy or heavy standing (all)
Raised
The following conditions might result if the reel is set too low:
• Crop loss over the header backtube
• Crop disturbance on the drapers caused by the reel fingers
• Crop being pushed down by the tine tubes
The following conditions might result if the reel is set too high:
• Cutterbar plugging
• Crop lodging and being left uncut
• Grain stalks dropping ahead of cutterbar
Refer to 3.6.2 Header Settings, page 43 for recommended reel heights for specific crops and crop conditions.
IMPORTANT:
Maintain adequate clearance to prevent fingers contacting the knife or the ground. Refer to 5.15.1 Reel Clearance
to Cutterbar, page 502.
Checking and Adjusting Reel Height Sensor
The output voltage range of the auto reel height sensor can be checked from inside the combine or manually at the
sensor. For in-cab instructions, refer to the combine operator’s manual. To check the voltage range manually, refer
to the following procedure.
DANGER
To avoid bodily injury or death from unexpected start-up of machine, always stop engine and remove key
from ignition before leaving operator’s seat for any reason.
CAUTION
Check to be sure all bystanders have cleared the area.
IMPORTANT:
Ensure minimum reel height is properly set before adjusting reel height sensor. For instructions, refer to 5.15.1 Reel
Clearance to Cutterbar, page 502.
IMPORTANT:
To measure the output voltage of the reel height sensor, the combine engine needs to be running and supplying
power to the sensor. Always engage the combine parking brake and stay away from the reel.
OPERATION
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