Mower Maintenance
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.
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 switch, and move the motion control levers to
the brake position. Stop the engine, 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 48). If the edges
are not sharp or have nicks, remove and sharpen the
blades; refer to Sharpening the Blades.
2. Inspect the blades, especially the curved area
(Figure 48). If you notice any damage, wear, or
a slot forming in this area (item 3 in Figure 48),
immediately install a new blade.
Figure 48
1.
Cutting edge
3.
Wear/slot forming
2.
Curved area
Checking for Bent Blades
1. Rotate the blades until the ends face forward and
backward (Figure 49). Measure from a level surface
to the cutting edge, position
A
, of the blades
(Figure 49). Note this dimension.
Figure 49
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.
35
Summary of Contents for TimeCutter ZD420T
Page 45: ...Schematics G005894 Electrical Diagram Rev A 45 ...
Page 46: ...Notes 46 ...
