Toro Z Master Z557 Operator's Manual page 31

52in turbo force side discharge mower
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Checking for Bent Blades
1. Rotate the blades until the ends face forward and
backward (Fig. 34). Measure from a level surface to
the cutting edge of the blades (Fig. 35). Note this
dimension.
Front
Figure 34
MEASURE FROM CUT-
TING EDGE TO A LEV-
EL SURFACE
Figure 35
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 above. 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 32.
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.
Removing the Blades
Blades must be replaced if a solid object is hit, if the blade
is out of balance or is bent. To ensure optimum
performance and continued safety conformance of the
All manuals and user guides at all-guides.com
m–1078
m–2539
31
machine, use genuine TORO replacement blades.
Replacement blades made by other manufacturers may
result in non-conformance with safety standards.
Warning
Contact with sharp blade can cause serious injury.
Wear gloves or wrap sharp edges of the blade
with a rag.
1. Hold the blade end using a rag or thickly-padded
glove. Remove the blade bolt, spring disk and blade
from the spindle shaft (Fig. 38).
Sharpening the Blades
Warning
When sharpening blade, pieces of blade could be
thrown and cause serious injury.
Wear proper eye protection when sharpening
blade.
1. Use a file to sharpen the cutting edge at both ends of
the blade (Fig. 36). Maintain the original angle. The
blade retains its balance if the same amount of
material is removed from both cutting edges.
1
Figure 36
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 37). If the blade stays in a horizontal
position, the blade is balanced and can be used. If the
blade is not balanced, file some metal off the end of
the sail area only (Fig. 38). Repeat this procedure until
the blade is balanced.
1
Figure 37
1. Blade
m–1854
2
m–1855
2. Balancer

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