Manual

20
Brake OPC
Switch is
located
behind the
engine.
WARNING
5.11 How to Test the Operator Presence Control (OPC) Switch
With the parking brakes 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.
6.2 Height-of-Cut
Before adjusting the height-of-cut be sure the mower engine is off, and rear tires have proper air pressure.
Check for even tire wear. The height-of-cut can be adjusted the following way:
• While holding the deck lift lever grip to the left of the upright, push down
(with thumb or other hand) on the button at the top of the deck lift lever.
With the button pushed down, pull back slightly and then move the deck
lift lever forward to lower the deck or pull back to raise the deck. When
the deck is at the desired height, release the button and make sure the
internal stop block is fully locked into place. There is also a détente pin
that can be used to insure the deck is not lowered to a cutting height
that is lower than the lowest desired cutting height.
6.3 Belt Tension Adjustment
The pump drive belt is self-adjusting, and requires no adjustment, just replacement. The blade drive belt
is self-adjusting also and requires no adjustment, just replacement.
6.3.1 Replacing the Drive Belt
• Stop the engine, remove the key and wait for all moving parts to stop.
• Remove the deck covers and remove the engine to blade belt. (Refer to
replacing the cutter deck belt section)
• Raise and secure mower
• Remove the belt by using a ½” ratchet and extension to relieve the belt
tension.
• Reinstall in reverse order. Figure shows belt routing and spring
compression direction.
Foot
Platform
OPC switch
is located in
the front of
the battery
box