Yetter 2995 Generation III Coulter - Manual (Page 7)

7
INSTALLATION
12. On John Deere 7000 front fold planters there are two hoses that may interfere with
coulter operation. Loosen hydraulic fittings and swivel hoses up out of the way to
provide clearance when coulter flexes up.
13. If you have elected to let coulter swivel, set lock collar to allow swivel in one or both
directions as required. If you have elected to hold coulter rigid, set coulter straight
with the direction of travel. Tighten set screw to 110 ft. lb. torque maximum.
14. Set spring tension by adjusting 3/4” lock nut until 1/8” of threads are exposed above
the nut. Tighten 3/4” locknut if greater spring pre-load is required. NOTE: This will
reduce vertical movement of coulter.
15. NEVER mount coulters under planter drive shaft to allow coulter blades to contact
shaft when an obstacle is struck. Coulters must be mounted so blade can always flex
up and clear drive shaft.
NOTE: Dry fertilizer must be free of chunks greater that 1/4” in size to prevent
plugging. Yetter recommends using screened fertilizer or running fertilizer
through screen when hoppers are filled. Clean hoppers thoroughly at the
beginning of season to prevent plugging problems.
The rubber dry fertilizer tube may appear to be ‘stretched’ when the planter is in
the transport position. This does not affect operation of the planter and should
not be detrimental to the fertilizer tube.
OPERATION
Yetter Model Generation III fertilizer coulters are designed to apply fertilizer 3” to 5” deep.
See your fertilizer dealer for recommended depth and distance away from row for your
particular fertilizer. A popular placement setting is 2” below and 2” away from the seed.
High deposit rates require the fertilizer to be placed farther away from the row to avoid
crop “burn”.
The coulter can be set up to swivel or not swivel as required. By not allowing the coulter
to swivel, the distance between seed and fertilizer varies less when planting on contour.
When mounting Model Generation III coulters on 3-point or 2-point hitch planters, the
coulters should be set up to swivel, particularly if a 4-wheel drive tractor is used. This
reduces the side load on the coulter during operation. It is preferable to allow the coulter
to swivel.
IMPORTANT: For proper operation, the planter frame must operate level and at the
correct height, usually 20” – 22” while in operation.
In hard no-till conditions the desired operating depth may not be possible. Tighten spring
nut to maintain depth if spring is flexing rather than lower coulter to obtain maximum
depth.
Planter weight may limit operating depth in hard conditions, particularly with mounted or
semi-mounted planters. Be sure planter has enough weight to keep drive wheels on the
ground during operation or plant populations can be drastically affected.