Neutral Lockout Adjustment; Purging The Air From The Hydraulic System - Ferris IS700Z Series Dealer Setup & Adjustment Instructions Manual

2. Loosen the set collar (A, Figure 30) on the neutral return
rod (B).
30
3. Position the set collar along the neutral return rod until it
contacts and very lightly compresses the neutral return
spring (C).
4. Move the ground speed control levers into the operating
position, pull rearward, and release.
5. Move the ground speed control levers out towards the
NEUTRAL LOCKOUT position.
• if the ground speed control lever aligns with the notch
in the neutral lock plate, adjustment is complete;
• if the ground speed control lever stops it's return
motion past the notch (while standing at the rear of
the machine), re-position the set collar so the neutral
return spring is less compressed.
• if the ground speed control lever stops it's return
motion before the notch (while standing at the rear
of the machine), re-position the set collar so that the
neutral return spring is more compressed.
6. Repeat the process as necessary until the ground speed
control lever aligns with the notch in the neutral lock
plate.
Note: It is important to note that after every adjustment of
the neutral return rod, the lever must be pulled rearward and
released to properly check the return-to-neutral position.

Neutral Lockout Adjustment

Prior to adjusting the neutral lockout, the neutral and return-
to-neutral must be properly adjusted.
1. Park the unit on a flat, level surface such as a concrete
floor. Disengage the PTO, engage the parking brake, turn
the ignition switch to OFF, and remove the ignition key.
2. Chock the wheels of the unit to prevent movement.
3. Raise the seat to gain access to the neutral lockout
components.
14
4. Loosen the jam nuts (A, Figure 31) on the neutral lockout
bolts (B).
31
5. Engage the parking brake. The neutral lockout bolts will
enter the notches of the neutral lockout plates (C).
6. Position the neutral lockout bolts to the center of the
notches of the neutral lockout plates.
7. Re-tighten the jam nuts.
Purging the Air from the Hydraulic
System
Due to the effects air has on efficiency in hydraulic drive
systems, it is critical that it be purged from the system.
These purge procedures should be implemented any time a
hydraulic system has been opened to facilitate maintenance
or any additional oil has been added to the system.
The resulting symptoms of air in the hydraulic system may be:
• Noisy operation.
• Lack of power or drive after short term operation.
• High operation temperature and excessive expansion of
oil.
Before starting, make sure the transaxles/transmissions are
at the proper oil levels. If it is not, fill to the specifications
outlined in the Check / Fill Transmission Oil Level procedure.
Purging Air from the Hydraulic System:
1. Chock the front wheels to prevent the machine from
rolling. Raise the rear of the machine so that the vehicle's
rear tires do not contact the ground. Position jack stands
under the rear bumper of the machine to secure it.
2. Open the transaxle's bypass valves (see Uncrating for
the location and function of the bypass valves), start
the engine, release the parking brake, and slowly move
ferrismowers.com