John Shearer Pasture Renovation Drill Operator's Manual page 14

GATE SETTING
The seed and fertilizer metering rollers have an adjustable gate
at the metering point under the roller. This adjustment allows for
the diversity in size of seed and types of fertilizer. To ensure
accurate metering of material, it is essential that these gates be
correctly adjusted in accordance with the information supplied
below.
Gauges for Setting Gap
# 29939 Gauge gate 3mm
# 23470 Gauge gate 1.5mm
# 33657 Gauge gate 4mm
Fluted roller
Peg roller
Broad bean roller
Procedure for resetting gates if required:
1. Remove the sowing cups part number 39948.
2. Loosen collar part number 18503 on gate levers and
disengage pin part number 18515 from bracket assembly
part number 18598.
3. Obtain a spanner to fit the gate shafts. (20mm)
4. With one hand place the gauge between the lip of the gate
and the roller.
5. With other hand move the gate shaft using the spanner until
the gauge fits nicely between roller and the gate (rather like
a feeler gauge)
6. Do not have too tight, otherwise the edge of gate will wear
on rollers.
7. When you have the gauge (as selected) in this position, you
have gate setting one (1).
8. For placing the pin part number 18515 in position one (1) on
bracket part number 18598 and tightening socket screw part
number 18789 – it is preferable to have the help of another
person.
9. Note the gate levers when set in position one (1), are in a
different relationship to each other.
GEARBOX SETTINGS (if fitted)
The gearbox can be adjusted to any rate between 0 (no distributor
rotation) to 100 percent. The chart on page 12 are a guide to what
rate can be expected for various products. Be aware that these
chart is a guide only and for accuracy a calibration check must be
done before seeding.
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