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Section 3: Adjustments
11/05/10
Z48, Z54, ZSR54 & ZSR60 Accu-Z Razor
®
Zero Turn Mowers 357-344M
Table of Contents
Deck Adjustments
The mower deck has three areas that may need to be
checked occasionally and adjusted when needed.
•
Deck Cutting Height And Leveling
•
Deck Lift Assist Springs
•
Anti-Scalp Rollers
!
WARNING
Make sure blade engagement switch is (OFF), switch key is
(OFF) and removed, control levers are (OUT) and park
brake is (ON) before making adjustments.
Deck Cutting Height And Leveling
When level, the bottom edge of the deck should be 3"
above ground level with deck stop (#1) set at 3 1/4”
cutting height. If the deck cutting height is not properly
adjusted, readjust deck height as follows:
1.
Check tire pressures to make certain they are
properly inflated.
Refer to Figure 3-7:
2.
Park unit on a flat level surface.
3.
Raise deck fully up.
4.
Position blade cutting height at 3 1/4” by placing
3" high deck support blocks under the deck edge in
three locations. (Two stacked 2" x 4" x 5" or longer
boards may be used to make one 3" high block)
a. Place one 3" high support block under the deck’s
front edge in-line with the far left blade spindle.
b. Place a second 3" high support block under the
deck’s front edge in-line with the right blade
spindle.
c. Center a third 3" high support block under the
center of the deck’s back edge.
5.
Remove deck height adjusting stop (#1) shown in
Figure 3-8 on page 28 and lower deck onto the
support blocks.
Blade Cutting Height will be 3 1/4"
When Blocking Deck Edge 3" Above Ground Level
Figure 3-7
NOTE: Refer to “Tire Inflation Chart” on page 58 for
correct tire pressures.
3" High Support Block Constructed of two 2 x 4’s
3"
25944
Refer to Figure 3-8 & Figure 3-9 on page 28:
6.
Back 3/4" flange nuts (#7 & #9) four or more turns
away from deck lift trunnion (#8).
7.
Back 5/8" flange nuts (#18 & #20) four or more turns
away from spring assist trunnion (#19).
8.
Loosen adjuster jam nuts (#15 & #24) and adjuster
yoke whiz nuts (#27 & #28).
9.
Loosen adjuster screws (#14 & #23) until adjuster
yokes (#16 & #25) can move up and down freely.
10. Set cutting height at 3 1/4” by turning deck stop (#1)
around so that its flat side is against stop handle (#2)
and then place deck stop into the 3” cutting height
hole (#3) in deck height gauge bar (#4) (See deck
height indicator (#5) to locate position of 3" hole.
11. Tighten deck lift chains (#30, #26, #29 & #17) in the
order provided below:
Front Left Lift Chain #30
a. Adjust flange nut (#7) against trunnion (#8) until
lift chain (#30) on the front left side is tight, stop
handle (#2) is against deck stop (#1) and deck is
still resting on the support blocks.
b. After flange nut (#7) has been properly adjusted,
tighten flange nut (#9) to the proper torque.
Front Right Lift Chain #26
a. Make sure adjuster yoke (#25) moves freely.
b. Tighten adjuster screw (#23) until lift chain (#26)
on the front right side is tight and the deck is still
resting on the support blocks.
c. Tighten adjuster jam nut (#24) & yoke nuts (#27).
Back Left Lift Chain #29
a. Adjust flange nut (#18) against spring assist
trunnion (#19) until lift chain (#29) on the back left
side is tight and the deck is still resting on the
support blocks.
b. After flange nut (#18) has been properly adjusted,
tighten flange nut (#20) to the proper torque.
Back Right Lift Chain #17
a. Make sure adjuster yoke (#16) moves freely.
b. Tighten adjuster screw (#14) until lift chain (#17)
on the back right side is tight and the deck is
resting on the support blocks.
c. Tighten adjuster jam nut (#15) & yoke nuts (#28).
12. Raise deck fully up until stop handle (#2) catches on
the cross notch in the deck height gauge bar (#4).
13. Remove support blocks from under the deck.
IMPORTANT: Spring assist trunnion (#11) is factory
set and should not require field adjustment.
IMPORTANT: When completed, all lift chains will be
tight, the deck will be resting on all 3" support blocks
and stop handle (#2) will be against deck stop (#1).
