Toro 39488 Operator's Manual page 45

Figure 61
1. Cutting Edge
2. Sail
2. Inspect the blades, especially the curved area
(Figure 61). If you notice any cracks, wear, or a
slot forming in this area (item 3 in Figure 61),
immediately install a new blade.
Checking for Bent Blades
1. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Rotate the blades until the ends face forward and
backward. Measure from a level surface to the
cutting edge, position A, of the blades (Figure 62
). Note this dimension. For 36 inch mower decks
use Figure 63.
3. Wear/slot forming in
curved area
4. Crack in the curved area
48 inch Mower Deck shown
1. Measure here from blade
to hard surface
36 inch Mower Deck shown
4. Rotate the opposite ends of the blades forward.
5. Measure from a level surface to the cutting edge of
the blades at the same position as in step 3 above.
The difference between the dimensions obtained in
steps 3 and 4 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.
45
Figure 62
2. Position A
Figure 63