LOADER MOUNTED CONTROL VALVE EQUIPPED WITH 2 OR 3 CONTROL HANDLES OR TRACTOR REMOTE VALVE EQUIPPED WITH 2 OR 3 CONTROL HANDLES
If your loader utilizes a loader mounted control valve equipped with 2 or 3 control handles or tractor remote valve equipped with 2 or 3 control handles, it will function as described in Figure 3.
| Lift Cylinder Circuit |
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| Pull the handle | Push the handle | Push handle full forward | ||||||||
| back to raise unit | to activate float position | |||||||||
| forward to lower unit | ||||||||||
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Attachment Cylinder Circuit |
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| Pull the handle |
| Push the handle | ||||||||
| back to roll |
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| forward to |
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| back attachment |
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| dump attachment |
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| 3rd Cylinder (optional) Circuit |
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| Pull the handle |
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| Push the handle |
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| back to open |
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| forward to close |
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| assembly |
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| assembly |
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Figure 3
NEUTRAL POSITION
The loader external valve provided by Bush Hog has a “neutral position” which prevents movement of the loader or attachment. When the control handle is manually released from the work position, the valve spool will return to the neutral position.
FLOAT POSITION
The loader external valve provided by Bush Hog has a “float position” incorporated into the lift cylinder cir- cuit which allows the loader to float. This float fea- ture is important for satisfactory operation when scraping, sweeping, leveling, or any job where it is necessary to follow the contour of the surface. To activate the float position, lower the bucket or attachment and push the control handle all the way forward into detent. The valve will stay in float detent position until the operator manually pulls the control handle out of detent position to deactivate float.
INITIAL LOADER OPERATION
Before operating the loader, fully raise and lower the boom two or three times. Then raise the loader bucket approximately four (4) feet above the ground and cycle the bucket cylinders two or three times. Lower the bucket or attachment to the ground. Check the tractor hydraulic fluid level and fill as required. Refer to the tractor Operator Manual for the proper hydraulic fluid and the correct hydraulic fluid level.
CAUTION 
BEFORE LEAVING THE TRACTOR SEAT, LOWER ATTACHMENT OR LOADER BOOM TO GROUND, STOP ENGINE, LOCK BRAKES, RELIEVE HYDRAULIC PRESSURE, AND REMOVE KEY.
IMPORTANT: Always keep the cylinders in a retracted position when the loader is not in use to guard against rust and contamination which may cause damage to the cylinder rods and hydraulic system.
REMOVING AIR FROM HYDRAULIC SYSTEM
Repeat raising and lowering the loader boom and bucket operations until all the air is removed from the system and the system responds properly.
HOSE IDENTIFICATION
Check if loader functions as shown and described in Figures 2 and 3. Then install colored nylon ties, one color per each circuit. Locate nylon ties so one is attached to male side of quick coupler and one is attached to female side of quick coupler. This will allow easy identification of loader circuits when mounting and dismounting loader.
BUCKET LEVEL INDICATOR
BLI (bucket level indicator) rod has been preassem- bled to loader linkage pin at the factory.
BLI (bucket level indicator) must be adjusted during initial loader set up. Adjust the BLI as follows: Position the bucket level on the ground. Loosen the BLI clamp holding the BLI tube, and align the BLI tube so that it is flush with end of the BLI rod, then retighten BLI clamp. When operating loader, use the attachment cylinder controls to align the BLI rod so that it is flush with the end of the BLI tube. This will inform the operator that the bucket and/or attach- ment bottom is level with ground. Refer to Figure 4.
Bucket Level
Indicator 
Figure 4
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