Yetter 2995 Generation III Coulter - Manual (Page 6)

6
INSTALLATION
1. Assembly 3/8 x 2-1/2” roll pin into hole closest to end of 1-1/2” diameter shank, leaving
approximately equal amount protruding out each side. Note: offset shanks require
that you perform step 2 first then step 1.
2. Insert lock collar into pivot casting and slide shank up through casting and lock collar.
If you wish to lock coulter from pivoting, slide roll pin into slots in casting. If you wish
to let coulter pivot, do not align roll pin with casting slots, but slide shank up till roll pin
contacts casting surface. Install and tighten 5/8 x 1” setscrew in lock collar to 110 ft.
lb. torque maximum.
3. Mount 17” blade loosely to hub using four 1/2 x 1-1/2” carriage bolts, lock washers and
nuts.
4. Mount fertilizer knife and spacer block to rear support arm using two 1/2 bolts lock
nuts. Place shims between 2995-309 – Spacer Block and support arm as required to
align knife point with blade.
5. Center blade on hub by rotating blade and watching clearance between knife and
blade. Slide blade on hub as required until clearance varies no more than 1/8” when
blade is rotated one complete revolution. Tighten four 1/2” nuts. If blade-wobble is
excessive, check for burrs on hub mounting surface and remove if necessary.
6. Adjust knife clearance to blade as close as possible. The high point of the blade
should just clear the knife as blade is rotated. Be sure blade rotates freely then
tighten two 1/2” locknuts to 120 ft. lb. Re-check clearance, by rotating blade one full
revolution, after all bolts are tightened.
7. Assemble clamp components loosely to planter front bar as shown in parts view of
appropriate clamp.
8. Position coulter clamps either toward the inside or outside of the planter openers on
each side of the planter to equalize draft. Tighten four 1/2” nuts to secure the clamps.
9. Install coulters on planter by inserting shank up through clamps and tightening 5/8 x 1”
setscrews.
10. Install 5/16 x 2-1/2” cotter pins in all vertical 1-1/2” diameter shanks. This cotter pin
prevents loss of coulter should the clamp setscrews work loose. Cotter pin can be
installed between clamp castings or on top, above top casting depending on the
shank.
11. Set coulter depth by loosening setscrews in clamp castings. For John Deere 7000
front fold planters there may not be enough up adjustment to operate coulter at proper
depth, not more than hub deep. Not all toolbars on John Deere planters operate at
the same height. If necessary, cut off top of 1/12” diameter shank to allow proper
adjustment.