Wright Serial # 69788 and Higher - Manual (Page 24)

24
WARNING
Foot Platform
OPC switch is
located on the
right side
under hydro
pulley guard Brake OPC
Switch is
located on
the left side
under the
dash panel
WARNING
the right-side rod) or the left side needs to go slower (by shortening the left-side rod). It is important that
neither rod should be lengthened too far, as mentioned above.
After getting the mower to track straight, readjust the neutral adjustment on the pump by using a ¼” allen
wrench at the Return-to-Neutral (RTN) mechanism, if necessary. It is normal to make these adjustments
from time to time.
5.9 How to Test/Use the Blade Clutch/Brake Switch
Before testing the blade clutch/brake operation, make sure the area is clear and there is nothing vulnerable
to thrown objects from under the mower. No one should be near the mower deck or in its line of discharge.
The discharge chute deflector should be in the down position. The parking brake should now be applied.
Move the engine throttle to ¾ speed setting. When mowing, the engine speed should always be at its
highest setting. The engine governor will regulate the engine according to the different mowing conditions at
that setting. Place both feet firmly on the foot platform and turn on the blade clutch switch. Run blades for a
minute or so. Try engaging and disengaging the blades a few times about 10 seconds apart. If the blades
do not start and stop in a few seconds each time, service the blade brake system or contact your local Wright
dealer.
Under mowing load, the clutch’s life will be the greatest if engaged and disengaged at the ¾ throttle
level.
5.10 How to Test the Operator Presence Control (OPC) Switch
With the parking brake applied and the blades ON, try lifting your feet off the foot platform to test the
Operator Presence Control switch (OPC). The engine should kill and the blades should stop within a few
seconds. If not, service the OPC system or contact your local Wright dealer.
6 Service and Adjustments
6.1 Tire Maintenance and Pressure
Excessively worn tire tread is dangerous on all hills. Replace drive tires with less than 3/32” of any tread
groove left. Use tires with the tread pattern recommended by Wright Mfg., Inc. only. Keep the tire pressure in
the drive tires between 18 and 22 psi. Higher pressures will cause the tires to have less traction, which will
force you to go slower and with less safety and give you a harder ride. Front Casters are equipped with non-
pneumatic tires and do not required any air. They do not have any tread but should be replaced when
excessively worn. Lowering the tire pressure below the recommended pressure will change the pitch of the
deck which may require further deck pitch adjustment.