Servicing The Cutting Blades - Toro Z580-D Z Master Operator's Manual

1. Measure here from blade
to hard surface
3. Record this measurement.
4. Measure the right blade at the B location, from a
level surface to the cutting edge of the blade tip
(Figure 82).
5. Record this measurement.
6. The mower blade should be a 1/4 to 3/8 inch
(6 to 10 mm) lower at position A than at position
B (Figure 82). If it is not correct, proceed to the
following steps.
Note: Both of the front swivels need to be adjusted
the same amount to maintain equal chain tension.
7. Loosen the front swivel jam nuts, at the front of
the right and left swivels, approximately a 1/2 inch
(13 mm) (Figure 81).
8. Adjust the lift nuts on both the left and the right
side of the machine to achieve 1/4 to 3/8 inch
(6 to 10 mm) lower in front at A than in the rear at
B (Figure 81).
9. Tighten both swivel jam nuts against the front swivel
to lock the height.
10. Check to make sure there is equal tension on the
chains and adjust again if needed.
Adjusting the Compression Spring
1. Raise the mower lift lever to the transport position.
2. Check the distance between the two large washers,
it needs to be 11-1/8 inches (28.2 cm) for 52 inch
mower decks and 10-1/2 inches (26.7 cm) for 60
inch mower decks (Figure 83).
3. Adjust this distance, by loosening the spring jam
nut and turning the nut in front of each spring
(Figure 83). Turning the nut clockwise will shorten
Figure 82
2. Measure at A and B
the spring; counter-clockwise will lengthen the
spring.
4. Lock the nut into position by tightening the spring
jam nut (Figure 83).
1. 11–1/8 inch (28.2 cm)
between the large washers
for 52 inch mower decks
2. Front nut
3. Spring jam nut
4. Front swivel
5. Swivel jam nut

Servicing the Cutting Blades

Maintain sharp blades throughout the cutting season
because sharp blades cut cleanly without tearing or
shredding the grass blades. Tearing and shredding turns
grass brown at the edges, which slows growth and
increases the chance of disease.
Check the cutter blades daily for sharpness, and for any
wear or damage. File down any nicks and sharpen the
blades as necessary. If a blade is damaged or worn,
replace it immediately with a genuine Toro replacement
blade. For convenient sharpening and replacement, you
may want to keep extra blades on hand.
DANGER
A worn or damaged blade can break, and a piece
of the blade could be thrown into the operator's
or bystander's area, resulting in serious personal
injury or death.
• Inspect the blade periodically for wear or
damage.
• Replace a worn or damaged blade.
58
Figure 83
6. Lift nut
7. Front support arm
8. Large washer
9. 10-1/2 inch (26.7 cm)
between the large washers
for 60 inch mower decks