Operation - Yetter 25 AVENGER COULTER Operator's Manual

Yetter Model 2986 25" coulter is designed to inject liquid material 4"-8" deep below the
surface. Depth of operation of the coulter will vary depending on your particular
application.
IMPORTANT: For proper operation, the toolbar frame must operate level (for and aft) and at the
correct height, usually 22" – 25" while in operation.
In hard no-till conditions the desired operating depth may not be possible. Tighten the
spring pressure adjustment to obtain maximum depth if spring is flexing rather than lower
the toolbar frame below the 22" minimum recommended setting.
Toolbar weight may limit operating depth in hard soil conditions, ballast weight can be
added to the toolbar frame. Example, 200 lb. per coulter may be required to get desired
depth and obtain toolbar frame height of 22"-25".
Coulter operating depth is affected by spring tension, toolbar height, levelness of toolbar
and soil conditions. As soil conditions change, toolbar settings and coulter adjustments
will need to be changed as well.
Toolbar gauge wheel kits are recommended for use with the Avenger coulter because of
toolbar frame height being very critical.
1. Set/mount coulter blades to run vertical to the soil. Operation depth and blade wear can
be affected if coulter is mounted crooked or if toolbar is not level side to side.
2. After a few hours use, check all bolts and setscrews for tightness and proper torque
settings.
3. After a day of use (10-12 hours), check coulter hubs for loose bearings. There should
be no end play in the hub bearings to allow it to wobble. If necessary, remove hub cap
and cotter pin, adjust slotted nut to remove wobble, recommended torque of 13 ft/lbs,
re-insert cotter pin and replace hub cap. If the wobble or looseness can not be
corrected, the bearings, cups and seal will need to be replaced. DO NOT RE-USE
WORN OR DAMAGED PARTS.

OPERATION

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