Lastec 4500ZSR, Owner'S Manual, Page: 39 / 77

Initial Set-Up
Towing (Hydrostatic Pump Adjustment)
Initial Set-Up Lastec//021819 3-9
3
3.8 Towing (Hydrostatic Pump Adjustment)
When towing the Lastec Mower, it is necessary to make minor adjustments to both of the
hydrostatic pumps. This will allow the hydraulic fluid to bypass the hydrostatic pump.
Please follow the instructions below for the proper procedure:
1. Locate the bypass valve. This will be located on the side of each pump. NOTE: The
bypass valve is zinc plated with the hole drilled through the sides.
2. Use a 5/8” wrench to turn the valves no more than (2) two turns in a counterclockwise
motion. The drive tires should rotate freely.
3. Tow the unit to the desired destination at a slow speed.
4. When towing is completed, return the valves to there original position by turning them in a
clockwise motion until they are tight (84-120 in-lbs).