Wright Serial #59542 and higher - Manual (Page 25)

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WARNING
WARNING
6.5 How to Move the Mower if the Engine Won’t Start
Remove the R-clip from the neutral release arm (bypass valve). Pull arm outward and install R-clip. The
control handles must be in the “In, Drive” positions to release the parking brake.
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. If air is
entrained in the system, loss of power, excessive heat, and damage to the transaxles may occur.
6.7 Transaxle Fluid Change Procedure
To ensure constant fluid quality levels and longer life, an initial oil and filter change at 75 – 100 hours, then
every 400 hour thereafter is recommended.
Work on a level surface and move control levers to the outward “Park/Brake On” position.
1. Remove filter guards from both transaxles. (a)
2. Clean any loose debris from around the filter. It is very important that no dirt or contamination enter the
hydraulic system.
3. Remove filters and allow oil to drain from the drive system.
4. After the oil has drained, wipe the filter base surface off and apply a film of new oil to the gasket of the
new replacement filter (Wright Mfg. P/N 39410007).
5. Install filters by hand, turn ¾ to one full turn after the filter gasket contacts the filter base surface.
6. Reinstall the filter guards and torque screws to 65 In lbs (7.3 Nm) each.
7. Relieve drive belt tension and remove belt from stationary pulley. (b)
Note: Belt only needs to be off of the stationary pulley as the pulley needs to be removed in order to
remove the transaxle vent plug.
8. Remove stationary idler pulley. (b)
9. Remove vent plug on each transaxle. (c)
10. Add 2.0 – 2.5 qts. of 20W-50 motor oil to each transaxle though the transaxle expansion tanks, this
should bring the oil level to the vent port.
11. Install and torque vent plugs to 180 in. lbs (20.3 Nm)
12. Install stationary idler pulley and drive belt.
13. Continue to fill through the expansion tanks until the “Full Cold” line is reached.
14. Re-install expansion tank cap by hand and proceed to purge procedure.
(Closed) Run
position
(Open) Unlocked
position