Toro 30431 Operator's Manual page 33

Before Inspecting or Servicing the Blades
Park the machine on a level surface, disengage the blade
control (PTO) 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
1. Inspect the cutting edges (Fig 40). If the edges are not
sharp or have nicks, remove and sharpen the blades.
Refer to Sharpening the Blades on page 34.
2. Inspect the blades, especially the curved area (Fig. 40).
If you notice any damage, wear, or a slot forming in this
area (item 3 in Fig. 40), immediately install a new
blade.
Figure 40
1. Cutting Edge
2. Curved Area
Checking for Bent Blades
1. Rotate the blades until the ends face forward and
backward (Fig. 41). Measure from a level surface to the
cutting edge, position A, of the blades (Fig. 42). Note
this dimension.
1
2
3
m–151
3. Wear/slot Forming
33
Figure 41
Figure 42
2. Rotate the opposite ends of the blades forward.
3. Measure from a level surface to the cutting edge of the
blades at the same position as in step 1. The difference
between the dimensions obtained in steps 1 and 2 must
not exceed 1/8 inch (3 mm). If this dimension exceeds
1/8 inch (3 mm), the blade is bent and must be replaced.
Refer to Removing the Blades, and Installing the Blades
on page 34.
Warning
A blade that is bent or damaged could break apart
and could seriously injure or kill you or
bystanders.
Always replace bent or damaged blade with a
new blade.
Never file or create sharp notches in the edges
or surfaces of blade.
m–1078
m–2539