Wright Serial #59542 and higher - Manual (Page 21)

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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, control handles are moved to the
inward/operate position and 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
transaxle has a Return-to-Neutral (RTN) device built into the
linkage of the assembly for reverse only. Before adjusting
neutral, it is necessary to lift the rear drive wheels off the
ground using a jack and stands. Additionally, the OPC seat
switch will need to be engaged. To make the adjustment,
remove the rear tire and remove the control rod at the
transaxles control arm. (Fig. 1, A) Loosen the ¼” Allen bolt
(Fig.1, B) and rotate the RTN device on the pump
corresponding to the wheel that needs adjustment. If the
right wheel turns in the neutral position, then the right
transaxle 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 transaxle 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 (Fig. 1, Transaxle) (Fig.2, Control Handle) (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.
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 lengthening
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.
Figure 1
A
B
Figure 2
Figure 1