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Section 3: Adjustments
ZST40 & ZST48 Zero Turn Mowers 357-505M
9/09/11
Steering Control Linkage
Figure 3-2
33182
Neutral
Parking Slot
Neutral
Parking Slot
Steering Adjustments
The steering levers on the mower may over time require
readjusting. Some adjustments can be made now to
make operating the mower more comfortable.
Lower Control Lever
Refer to Figure 3-2:
The hydrostatic drive system is designed with spring
return pump arms (#5) that will return the lower steering
control levers (#2) to neutral when released from reverse
position. If control levers do not return to neutral position
when released from reverse position, adjust length of
pump linkage rods (#1) as follows:
!
WARNING
Make sure mower is turned OFF before making adjustments to
pump linkage rods.
1.
Disengage blade switch and turn ignition switch off.
2.
Position control levers in neutral position as shown.
3.
Remove fan mounting hardware and fans (#4) if jam
nuts (#3) are not easily accessible.
4.
Loosen jam nuts (#3) at both ends of linkage rods by
5 or more full turns (approximately 1/4").
5.
Using the flat area (#1) on the linkage rods, rotate
rods to lengthen or shorten them until the levers align
with the neutral parking slots.
6.
Tighten jam nuts (#3) at both ends to lock linkage
rods in place.
7.
If the transaxle fans were removed, reinstall them
and tighten their hardware to the correct torque.
8.
Start mower engine and test control lever alignment
by moving the levers forward and backward before
returning them to neutral position. The pump linkage
rods (#1) are properly adjusted if the lower control
levers (#2) are aligned with neutral parking slots in
the mower housing when released.
NOTE: Step 3 is not required but may be done if
transaxle fan blades (#4) interfere with loosening
jam nuts (#3).
