Wright Serial # 63495 and higher - Manual (Page 24)

20
WARNING
Foot Platform OPC
switch is located on
the right side of the
cockpit behind the
access panel
can feel, in the hand control, that the internal pump stop has been contacted. Then shorten the rod one turn
(damage to the hydro pump will occur if the controls are adjusted in a way that put direct pressure on the
internal pump stop). You will feel the slight resistance. There is no need to start the engine while checking
this incrementally. Remember, this procedure does not apply if the Speed/ Sensitivity Adjustment is in the
slower setting.
If the rod is made shorter it will increase the forward speed capability for that side of the mower and if the rod
is made longer it will slow down that side of the mower. So, if the mower is tracking to the left, either the left
side needs to go faster (by shortening the left-side rod) or the right side needs to go slower (by lengthening
the right-side rod). If the mower is tracking to the right, either the right side needs to go faster (by shortening
the right-side rod) or the left side needs to go slower (by lengthening the left-side rod). It is important that
neither rod should be shortened too far, as mentioned above.
The only reference point to limit the adjustment from becoming extremely off is the relative position of the
pump stop and the handlebar in the faster Speed/Sensitivity setting. Therefore, if everything is way off either
because you are installing new parts (or other reasons) you should only use the faster Speed/ Sensitivity
setting to get the tracking accurate and then change to the slower speed range and adjust the tracking only
one or two turns on either side.
After getting the mower to track straight, check and/or 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.
5.10 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.
5.11 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 after a 3-6 second delay and the blades
should stop within a few seconds. If not, service the OPC system or contact your local Wright dealer.
Access panel for OPC switch
1. Remove knob and detent pin (A)
2. Pull panel away from unit
3. To install, ensure bottom tabs fit into slots (B)
A
B