Wright Serial #55142 and higher - Manual (Page 20)

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so the left caster wheel comes over and last should be the right caster wheel as the mower is twisting to the
left (counterclockwise). The technique works the best if you try not to drive backwards at a near 90 degree
angle to the curb but get all of the wheels to go over while the mower is moving at least a 45 degree angle to
the curb. To drive off a curb, first try driving up onto it to make sure the curb is not too high. If the curb is not
too high, drive the right-front caster off first while driving toward the curb at a 45 degree angle (the curb
should be to your right). Then, maintain that 45 degree angle so the left caster goes over, then the right-rear
wheel, then the left rear wheel. Do NOT step off the mower during ANY maneuver.
5.5.1 Never drive straight onto or off a curb
Never drive straight onto or off a curb. If you do the whole procedure at a very sharp angle it will tend to
minimize the contact of the mower deck with the curb and you will be able to more safely control the mower.
5.6 Mowing on Varying Terrain
See the Safety Instructions section of this manual, especially the parts on:
• Initial Operating Safety Guidelines
• Operation On Slopes
• Operation In Reverse
• Operation In Forward Direction
• Operation During Zero-Radius Turns
5.7 How to Adjust Neutral
Neutral refers to the mower movement when the engine is set to full throttle, parking brake is off, and the
control levers are in the neutral position. The mower should not move forward or backward during this time.
If the mower is moving forward or rearward, the neutral setting must be adjusted. The hydraulic pump has a
Return-to-Neutral (RTN) device built into the linkage of the pump. Before adjusting neutral, it is necessary to
lift the rear drive wheels off the ground using a jack and stands.
Additionally, the OPC switch will need to be engaged. To make the
adjustment, loosen the ¼” Allen bolt (Fig.1, A) and rotate the RTN device on
the pump corresponding to the wheel that needs adjustment. This will
require the removal of the wheel needing adjustment for access to the Allen
Bolt. If the right wheel turns in the neutral position, then the right pump RTN
needs to be adjusted. The RTN mechanism should be rotated until the
neutral position is found and then retighten the ¼” allen bolt. Use care not
to over tighten the allen bolt. Repeat the procedure on the other pump if
necessary.
5.8 How to Perform the Tracking Adjustment
First ensure that the tire pressure is equal on both rear drive tires (18-22 psi). Drive the mower on a level
parking lot with the engine at full throttle. Check that the mower drives in a straight line when both hand
controls are held to the full speed position. If not, park the mower and stop the engine. The adjustment is
made by loosening the jam-nuts on the control rods (this may need to be done to one or both control rods)
and adjusting the control rods. Once the jam-nuts are loosened at the front and rear of the control rod
proceed to turning the control rod clockwise or counter-clockwise to lengthen or shorten the effective length
of the control rod. (Fig.1, B) (The other Jam nut is attached to the lower part of the control handle)
If the rod is made longer it will increase the forward speed capability for that side of the mower and if the rod
is made shorter it will slow down that side of the mower. Therefore, if the mower is tracking to the left, either
the left side needs to go faster (by lengthening the left-side rod) or the right side needs to go slower (by
shortening the right-side rod). If the mower is tracking to the right, either the right side needs to go faster (by
Figure 1
A
B