32
Pump Belt Removal:
1. Remove deck belt (see Deck Belt Removal)
2. Rotate idler arm to relieve belt tension. The
idler arm has a 1/2” square hole to accept a
1/2” breaker bar to gain leverage over the
spring.
3. Remove belt from engine and hydro
sheaves.
Note: Belt routed above park brake cross shaft.
It must pass between the shaft and clutch
housing. This necessitates the disconnection of
the clutch jumper harness from the clutch. It
may also be necessary to loosen or remove the
clutch anchor to allow the clutch to rotate
thereby creating more clearance to the cross
shaft.
Pump Belt Installation
1. From the rear of the machine, seat the belt
into engine sheave
2. Pass forward edge of belt up between the
cross shaft and clutch.
3. Route belt around hydro sheaves and
stationary idler (ZT-3400 models only).
4. Rotate idler arm and roll belt onto idler.
5. Re-install or re-tighten clutch anchor.
6. Reconnect jumper harness to clutch.
7. Re-install deck belt (see Deck Belt
Installation)
CASTER PIVOT BEARINGS PRE-LOAD
AND LUBRICATION
Service Interval: Once aYear
Tighten the nut until it is snug then back it off
1/8-1/4 turn. This will set the preload on the
bearing. You should feel a slight drag as you
rotate the caster fork clockwise and
counterclockwise
1. Remove the protective cap from the top.
2. Pump grease into the fitting until grease is
seen coming up through the bearing. Do no
over fill. Do not fill the housing.
3. Reinstall the protective cap and tap into
place
ADJUSTMENTS
Note: Disengage PTO, shut off engine, wait for
all moving parts to stop, engage parking brake,
and remove key before servicing, cleaning, or
making any adjustments to the unit.
CAUTION
Raising the mower for service or
maintenance relying solely on
mechanical or hydraulic jacks could be
dangerous. The mechanical or hydraulic
jacks may not be enough support or
may malfunction allowing the unit to fall,
which could cause injury.
Do Not rely solely on mechanical or
hydraulic jacks for support. Use
adequate jack stands or equivalent
support.
DECK LEVELING
Note: Small adjustments can be accomplished
by increasing the tire pressure in the tire on the
low side.
1. Park the machine on a level surface and
disengage the blade control switch.
2. Stop engine, wait for all moving parts to
stop, and remove key. Engage parking
brake.
3. Check the air pressure in the drive tires. If
needed, adjust to the recommended
inflation; refer to Checking the Tire
Pressure in the Drive System Maintenance
section.
4. Set the height of cut to the desired position.
5. Raise the discharge deflector.
6. Carefully rotate the blades front to rear.
Measure from the tip of the front blade to
the level surface.
NOTE: In most conditions, the back tips should
be adjusted 1/4 inch (6.4 mm) higher than the
fronts.
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