Landoll SSB-8 Operator's Manual page 43

On the right hand side of seeder, slide Magnet Mount
Assembly onto seed shaft, ensure groove is aligned with
seed shaft roll pin. Secure Set Screw to seed shaft.
Remove two 5/16-18 x 1-3/4 Bolts, Nuts and Lock
Washers from the seed shaft retaining plate. Replace
with two 5/16-18 x 2 Bolts. Align the Shaft Sensor
Bracket with the two 5/16-18 x 2 Bolts. Secure with Flat
Washers and existing Lock Washers and Nuts.
Figure 2-22: Brome Box Sensor Brackets - 2 of 2
ASSEMBLY INSTRUCTIONS
Insert Sensor into Shaft Sensor Bracket slot.
Slide/Position Seed Shaft Sensor so it is 1/8" from the
magnet. See Figure 2-23. Tighten both Retaining Nuts.
2-21