28
Section 3: Adjustments
ZT60i & ZT72i (S/N 748109-) Accu-Z
®
Zero Turn Mowers 357-398M
4/1213
Table of Contents
Deck Drive Belt Adjustment
The spindle belt remains in constant tension by means of
a spring tensioned idler. The spring tension should be
adjusted so that the belt does not slip under normal
operating load conditions and may require readjusting as
the belt stretches and wears. The belt should be replaced
if it is excessively worn or damaged.
Refer to Figure 3-8 & Figure 3-9:
Check spring length to verify if belt is tensioned correctly.
Installed spring length should be 4 3/4" +/- 1/8". Vary the
spring length by adjusting the length of the eye bolt.
Deck Drive Belt Adjustment
Figure 3-8
Excessive belt tension may lead to premature damage of
belt and drive components and is also a safety hazard to
the operator and bystanders. Not enough belt tension
may also lead to premature belt damage due to
excessive belt slippage.
Deck Drive Belt Adjustment
Figure 3-9
30109
Tension Idler
Over-Center-Release Bolt
(Turn Counterclockwise to Release Belt Tension)
Eye Bolt (Adjust Length To
Vary Spring Tension)
Deck Drive
Extension Spring
Hitch Pin (Remove Before Releasing Belt Tension)
Anchor
Bracket
IMPORTANT: Do not over tension spring to
compensate for a badly worn belt or pulley.
24562
Deck Leveling & Height Adjustment
The mower deck has three areas that may need to be
checked and adjusted periodically. Before considering
any mower deck leveling adjustments, check to make
certain tire air pressure is within the specified range.
!
WARNING
Stop engine. Make sure blade engagement switch is in the
down (OFF) position. Place both control levers in park
position (OUT) and set park brake lever to (ON) before
leaving machine.
Leveling the deck must be done in the following order:
1.
Check tire pressures to make certain they are
properly inflated before leveling deck.
Refer to Figure 3-10:
2.
Park unit on a flat surface.
3.
Raise deck fully up.
4.
Position the blade cutting height at 3 1/4” by placing
3" high deck support blocks under the deck edge in
three locations:
a. Place two of the 3" support blocks under the deck
front edge in-line with the far left and far right
blade spindles.
b. Center the third 3" support block under the deck
back edge.
Blocking up Deck
Figure 3-10
NOTE: Refer to “Tire Inflation Chart” on page 63 for
correct tire pressures.
3"
3" of Deck Support Blocks
(Three Places)
30100
Place Support Blocks In
line With Deck Spindles
