Initial Set-Up
Towing (Hydrostatic Pump Adjustment)
Initial Set-Up Lastec Mower 3372/011305 3-9
3
3.10 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.
2. 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).
3.11 Hydrostatic Pump Belt
WARNING!
NEVER inspect, adjust, or change the hydrostatic pump belt while the engine is
running!
The hydrostatic pump drive belt is located at the front of the engine, between the radiator and the
engine block. The hydraulic belt idler is mounted on the engine framework. The idler should ten-
sion the belt properly so that additional adjustments are not necessary.
Check the belts for visible wear or damage. If belt appears
excessively worn, damaged, cracked, weathered, or other-
wise appears to pose an unsuitable or unsafe operating con-
dition, replace the belt.
Check the belt for 45-50 lbs. tension. If the idler tensioner
rotates to its maximum stroke without adequately tightening
the belt, you need to replace the belt. If the belt you are
checking is new, and the idler tensioner goes to its maximum
stroke without adequately tightening the belt, it is likely you
have installed the wrong size belt. See section 5.14 of this
manual or contact your Lastec dealer for the proper belt
lengths for your Lastec Mower.
If you are unable to install a new belt with the idler system at
its minimum stroke, it is likely you are installing the wrong size belt. Contact your Lastec dealer for
proper belt lengths for your Lastec Mower.
Be sure that the idler tensioning spring is properly installed and in good condition. If for some rea-
son this spring becomes loose, detached, or fatigued, the idler will not properly tension the belt.
Warning
Go to www.lastec.com for latest changes in this manual.
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