Manual

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6.6 Hydraulic System
Whenever servicing the hydraulic system, it is of the utmost importance to keep any dirt or debris from
getting into the system. Clean off all parts before disassembly and assembly. When any of the hydraulic
parts are disconnected or removed or when the oil is changed, air must be bled from the system.
• Low Pressure Hose
• High Pressure Hose
• Arrow Indicates Direction of Flow
6.7 Bleeding Air from the Hydraulic System
If air is entrained in the system, loss of power, excessive heat, and damage to the hydraulic pumps may
occur. First, make sure the oil level in the reservoir is correct. The oil should be level with the bottom
threads of the oil level port. Use fully synthetic oil: Mobil1 15W-50. Lift the mower so that the rear wheels
are off the ground. Be careful to support the mower so that it will not fall or tip while the system is bled of air.
With the bypass valves open and the engine running, slowly move the control levers back and forth five or six
times. Now close the bypass valves and with the engine running, slowly move the control levers back and
forth five or six times. It may be necessary to repeat the above steps until all the air is purged and the rear
wheels are turning at normal speed. After purging is complete, adjust the oil level in the reservoir if
necessary.
6.8 Lubrication
The Wright Sport RH is made with sealed bearings, oil based bushings and with limited grease fittings
therefore only the front caster wheels and caster pivots need to be greased. (See maintenance chart for
service intervals)
• Wipe grease zerks with a clean rag prior to greasing. Using a grease gun pump several pumps per
fitting.
WARNING