Hydraulic Pump Belt Adjustment; Deck Drive Belt Adjustment; Engine Rpm Setting - HUSTLER ATZ Owner's Manual

rotating freely even with the bypass valves open.
There should be no resistance from the brakes at this
point.
5. Move the control lever to where it is just inside (1/8")
the park brake slot. Fig. 5-8
NOTE: When the control lever is against the outside
edge of the the slot, the brakes should not be engaged.
6. Rotate the tire. If the brake is adjusted properly the
tire will still rotate but friction will start to become
noticeable here. However, if no brake resistance is
noticed, the brake needs adjusted as follows:
7. Loosen the brake linkage jam nuts. Fig. 5-9
8. Rotate the tire and at the same time rotate the
turnbuckle to shorten the length of the brake linkage to
increase the brake pressure. When you feel the brake
begin to engage, stop adjusting the turnbuckle. Re-
tighten the jam nuts on the turnbuckle.
9. Place the control lever in the park brake slot (Fig. 5-8).
The tire should not rotate when the control lever is in
the park brake position.
10. Place the control lever in the neutral position. The tire
should rotate freely.
11. Close the hydraulic pump's bypass valve.
12. Repeat steps 3 thru 11 for the other side.
13. Remove the jack stands and lower the unit. It is now
ready to operate.

Hydraulic pump belt adjustment

The pump drive belt tension remains constant by means of
a tension idler and spring (Fig. 5-10). There is no tension
adjustment of this belt. NOTE: Replace the belt every 400
hours or every two (2) years whichever comes first.
WARNING: If the pump belt fails, loss of
control will occur espceially when operating on a
slope. If you lose steering control while
operating the machine, place the steering
control levers in the park brake position
immediately. Inspect the machine and involve
your Hustler dealer to resolve the problem
before continuing to operate.

Deck drive belt adjustment

The spindle belt tension remains constant by means of a
tension idler and spring (Fig. 5-11). The spring tension
should be such that the belt does not slip under normal
operating load conditions, assuming the belt is not
excessively worn or damaged. As belt stretches and wears
in, adjustment may become necessary. To increase belt
tension, move the spring chain one (or more) link(s) at the
anchor bracket (Fig. 5-11). Installed spring length should be
9.0" ± .3" (22.8 cm ± .76 cm) originally with adjustments of
.60" (15.2mm) per chain link. (Fig. 5-12)
IMPORTANT: Do not over tension the spring to
compensate for a badly worn belt or pulley.

Engine RPM setting

The Hustler ATZ are designed so that the engine will run
at 3600 rpm static pump load only. At this speed the
hydraulic pumps are running at their maximum rated speed.
J J a a m m n n u u t t
Brake linkage
Spring
Tension
idler
Spring
Spring Extension
Normal Spring Length
6.0"
5-4
J J a a m m n n u u t t
Turnbuckle
Figure 5-9
Pump drive
belt
Figure 5-10
Chain
Anchor
bracket
Tension idler
Figure 5-11
9.0"
3.0"
Figure 5-12
397463 1/20/05