SPC 20 OPERATOR’S MANUAL
C-12 OPERATION
Cyclone Blower -
The cyclone blower creates air flow for the pneumatic seed delivery. The cyclone blower speed
should be fast enough to blow seed into the cyclone without plugging, but not fast enough to blow
seed out the top of the cyclone. Adjust speed using adjustable pitch sheave. To adjust sheave:
1. Loosen set screw holding key between hub and sheave half. Do not loosen set screw holding key
between hub and shaft.
2. Remove key
3. Rotate sheave clockwise (decrease distance between sheave halves) to decrease speed,
counter-clockwise (increase distance between halves) to increase speed.
4. Rotate sheave in half rotation increments, replace key, and tighten set screw.
HEADER SETTINGS AND ADJUSTMENT
Crop and field conditions will affect settings. Settings are best adjusted in the field with border rows
to simulate plot harvesting. With any head pay attention to:
1. Crop field conditions
2. Ground speed
3. Header height
4. Threshing cylinder speed
5. Concave/cylinder clearance
6. Discharge at rear of machine
7. Sample condition
(See TROUBLESHOOTING SECTION for problems and adjustment solutions)
ROW CROP HEAD
Header Height
Cutting knife should be set so that the knives cut the plant below all the seed, but does not
necessarily harvest all the plant. When the header height is lowered use extra caution to avoid
rocks and other obstructions.
1. Loosen the 2 bolts on each gauge wheel bracket.
2. Raise or lower cutting knives to approximately 4 inches above the plant base using the header lift
lever. Measure height from the location where the rotating knife passes the stationary knife.
3. Tighten down bolts on both gauge wheels.
4. Let header down using the header lift lever, this will transfer the weight of the head to the gauge
wheels and lower the head 1/2” - 1”.
5. Be sure knives are not too close to the ground and the gauge wheels have not slipped in the
bracket.
Snout Adjustment
Snout should be set so that it gently lifts fallen crop, but does not ride on the ground and push dirt
into head. In standing crops adjust the height of the snout points approximately 2 inches (51mm)
above the ground. In down crop conditions adjust points for 1/2" to 1" (13 to 25mm) clearance
from the ground. Adjustment is most easily done when head is raised.
CAUTION! Put safety stops in header lift hydraulic cylinders.
1. Remove side access panels on outside dividers.
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