SPC 20 OPERATOR’S MANUAL
OPERATION C-13
2. Pull chain through slot and remove hairpin.
3. Replace hairpin through chain when snout position is corrected.
4. Replace side access panels.
5. Unlock Cam-Loc at the top of the center divider and pivot snout up.
6. Pull chain and remove hair pin.
7. Replace hairpin through chain when snout position is corrected.
8. Lock divider back down with Cam-Loc.
9. For fine adjustment: Loosen jam nut on under side of snout. Turn adjusting bolt to desired
position. Tighten jam nut.
Header Speed Adjustment
Header speed is very critical to reduce plants from hanging up in the head, as well as promoting
good feeding into the threshing cylinder. Header should be set equal or slightly faster than the
ground speed. When the header speed is properly set plants will stand straight up in the gathering
belts. Adjustment to the header speed will modify threshing cylinder speed. Use border rows to
practice and set initial speed.
1. Engage clutch, and bring engine throttle up to maximum RPM.
2. Determine ground speed, slower in wet conditions faster in dry conditions.
3. Be sure hydraulic system is warm and running smoothly. Allow hydraulics to warm up on cold
days.
4. Adjust threshing cylinder speed using knob in operator control panel. (See Table C-1 Concave /
Cylinder Settings Chart).
5. Set header speed to a mid-range speed, using dial in cab.
6. Begin harvesting. Make adjustment to the header speed and/or ground speed so that they are
equal. If header speed is too slow the plants will be pushed forward before they are cut, and
will bunch up in the head causing feeding problems. If header speed is too fast plants will be
jerked into the belts possibly knocking off seed.
7. Continue to adjust threshing cylinder speed to compensate for header speed adjustment.
CORN HEAD
(Review John Deere Corn Head Operator’s Manual sections: 05, 25, 30, 35 and 40 for additional
information.)
Stripper Plate Adjustment
ALMACO corn heads are equipped with an adjustable stripper plate. Standard setting of stripper
plates is 1-3/8’” apart at front and 1-1/2” apart at the rear. The size of the ears, stalks, and amount
of trash taken in will determine spacing. Set taper by moving adjustable plate until the clearance
between two plates is 1-7/16” at the middle of the plate.
1. Loosening jam nut on left side of head
2. Turn nut clockwise to tighten clearance counter-clockwise to open spacing.
3. Tighten jam nut down.
4. Loosen 2 bolts on top of chain wear plate, fixed plate side.
5. Adjust fixed plate until 1/8” taper is achieved.
6. Be sure wear plate is just touching gathering chains
7. Tighten bolts.
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