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When connecting the mower hydraulic lines, keep hoses, quick couplers, and swivels free of contamination. Never leave a disconnected hose end open and cap the tractor hydraulic outlet ports when not in use. If the tractor ports or mower hydraulic hose ends become contaminated, wipe clean with a rag before connecting. Operating Mower Hydraulics with Three Tractor Hydraulic Ports Connect one hose into each hydraulic port. Connect lines to correspond with position of hydraulic control levers. Operating Mower Hydraulics with Two Tractor Hydraulic Ports The lines that operate the wings must be plumbed together and will be controlled using one hydraulic control valve and the center section with the remaining control valve. Ensure that the operator is aware that each wing cannot be controlled independently nor will they raise and lower simultaneously. Operating the Mower Hydraulics with a 3-Spool Hydraulic Control Valve (Extra Equipment) Ensure the valve matches the hydraulic operating system of the tractor (open or closed center). Refer to the Assembly Section for additional information on equipping the tractor with a 3-spool control valve. Mount the valve bank to a tractor fender or other accessible location. Connect valve bank inlet and outlet lines to outlets of the same tractor hydraulic port. Connect the mower hydraulics to the control valve bank with the center section line to the right port. Connect the wing cylinder lines to the control valve positioned to correspond with the left and right wing. Safety Tow Chain If the mower is towed on a public roadway, a safety chain with tensile strength equal to or greater than the gross weight of the mower must be connected between the tractor and mower. This will help control the implement in the event the tongue becomes disconnected from the drawbar. Make sure the chain is attached to a secure location on the tractor and not to an intermediate support. After connecting both ends of the safety chain, drive the tractor to the right and left to check for proper chain length. Adjust length as necessary and allow only enough slack in the chain to make a maximum turn in both directions. When not in use, store the safety chain to protect it from mud or standing water by wrapping the chain around the tongue. Replace the safety chain if one ore more links or end fittings are broken, stretched or otherwise damaged or deformed. OPS-U-0039 OPERATION © 2009 Alamo Group Inc. OPERATION Eagle 20 03/09 Operation Section 4-12 To activate the 3-spool hydraulic control valve, tie the tractor’s hydraulic control lever back to keep hydraulic oil continuously fed to the valve bank. Hydraulic Line Support After connecting the mower hydraulic lines to the tractor, support the hoses with the equipped brackets. Ensure that hoses do not contact the driveline, do not bind while turning, and do not become pinched or kinked. Hydraulic Cylinder Priming Hydraulic Cylinders must be filled with hydraulic oil before removing the wing transport braces to lower the mower wings. Hydraulic cylinders and lines are filled by holding the valve control levers in the raised position until the cylinders fully retract (wing cylinders) and extend (center cylinder). Place control levers in the float position and repeat process a second time. Ensure wings are entirely supported by the cylinders before removing the transport braces. NEVER drive out bar pins and NEVER remove braces that have tension on them. 6. SETTING THE MOWER Properly setting the cutting height is essential for efficient and safe operation. A properly set mower will make a more uniform cut, distribute clippings more evenly, require minimal tractor work, and follow the contour of uneven terrain. NOTE: Avoid very low cutting heights, striking the ground with the blades gives the most damaging shock loads and will cause damage to the mower and drive. Blades contacting the ground may cause objects to be thrown out from under the mower deck. Always avoid operating the mower at a height which causes the blades to contact the ground. OPS-U- 0010 Never work under the Implement, the framework, or any lifted component unless the Implement is securely supported or blocked up to prevent sudden or inadvertent falling which could cause serious injury or even death. (SG-14) OPERATION © 2009 Alamo Group Inc. OPERATION Eagle 20 03/09 Operation Section 4-13 6.1 Setting Deck Height LEVELING DECK CENTER SECTION 1. Place the tractor and mower on a level surface and lower both wings. 2. Use the center section hydraulic cylinder to set the mower at approximately 3/4” above the desired cutting height. The additional height is necessary so that after the mower has been leveled, the deck pitch can be set such that the front of the mower is slightly lower than the rear. 3. Shut down the tractor, place the transmission in park, and set the parking brake before dismounting. 4. Level the mower deck front to rear by adjusting the leveling rods linking the tongue to the rear a...

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