Yetter Systems One Seed Jet II, Operator'S Manual, Page: 7 / 12

8
OPERATION
CLOSED CENTER HYDRAULIC SYSTEM
Operation of the Seed Jet hydraulic system requires continuous hydraulic oil flow. A selective
control valve lever stop must be used to avoid damaging the pump motor seals when shutting
off hydraulic oil flow. The stop will prevent the selective control valve lever from returning to the
neutral position. Install SCV lever stop in tractor console before operating Seed Jet system.
Only operate the Seed Jet hydraulic system with the SCV lever lock installed. The blower motor
will operate when SCV lever is in forward “detent” position. To shut off pump motor, move lever
forward into “float” position.
IMPORTANT: DO NOT return SCV lever to “neutral” position to shut off the blower.
HOW TO TRANSFER SEED:
1. Allow the tractor hydraulic oil to warm up.
2. Move SCV lever to “detent” position – this will start the blower turning and will force air
through the hoses out to the cyclone seed discharge.
3. Open the slide gate on the airlock to allow seed to flow into the top of airlock.
NOTE: DO NOT overload the system with too much seed.
4. While securely holding onto the cyclone, move the electrical toggle switch to the “on”
position. Momentarily see will start flowing out of the bottom of the cyclone and into the
seed hopper.
5. To stop seed flow, turn the toggle switch to the “off” position.
NOTE: Seed will continue to flow until the discharge hose is emptied of seed. Turn off
the toggle switch before the seed hopper is full.
6. Turning the electrical toggle switch on and off controls the operation of the 12 volt DC
motor on the airlock/ hopper assembly.
7. Once the seed has been transferred and stopped flowing from the cyclone, move the
SCV lever to the ”float” position to stop the blower.