Toro 30072, Operator'S Manual, Page: 33 / 44

Figure 40
1. Front jam nut 4. 4–3/4 inches (12 cm)
between the washer and
bushing, minus one turn
2. Rear jam nut 5. Carrier frame mounting
tab
3. Mower mounting bracket
6. Install the replacement drive belt around the drive
pulley on the traction unit and the spindle pulley
(Figure 39).
7. Install the belt guide on the mower with the two
flange-head bolts. Ensure that the formed loops face
toward the rear of the mower (Figure 39).
8. Tighten the front jam nut on each adjusting shaft
until the springs are completely compressed,
approximately 4-3/4 inch (12 cm) measured between
the washer and the bushing, then back the front jam
nuts off one turn (Figure 40).
Important:
Do not overtighten the jam nuts
after the springs are fully compressed, as this
can damage the drive belt.
9. Tighten the rear jam nuts (Figure 40).
10. Install the mower cover onto the cutting unit, then
tighten the hand knob (Figure 39).
Mower Deck
Maintenance
Servicing the Cutting Blades
To ensure a superior quality of cut, keep the blades
sharp. For convenient sharpening and replacement, you
may want to keep extra blades on hand.
WARNING
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.
Before Inspecting or Servicing the
Blades
Park the machine on a level surface, disengage the blade
control bail and set the parking brake. Turn the ignition
key to off. Remove the key and disconnect the spark
plug wire(s) from the spark plug(s).
Inspecting the Blades
Service Interval: Before each use or daily
1. Inspect the cutting edges (Figure 41). If the edges
are not sharp or have nicks, remove and sharpen the
blades. Refer to Sharpening the Blades.
Figure 41
1. Cutting Edge 3. Wear/slot Forming
2. Curved Area 4. Crack
2. Inspect the blades, especially the curved area
(Figure 41). If you notice any damage, wear, or a slot
forming in this area immediately install a new blade.
Checking for Bent Blades
1. Rotate the blade until the ends face forward and
backward (Figure 42).
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