Toro Groundsmaster 3320, Operator'S Manual

Page: 21 / 32

2. Rotate the blade until the ends face forward and
backward and measure from the inside of the
cutting unit to the cutting edge at the front of the
blade (
Figure 23 ).
Note:
Remember this dimension.
g010549
Figure 23
3. Rotate the opposite end of the blade forward
and measure between the cutting unit and
cutting edge of the blade at the same position
as in step
2 .
Note:
The difference between the dimensions
obtained in steps 2 and 3 must not exceed 3 mm
(1/8 inch). If the dimension exceeds 3 mm (1/8
inch), the blade is bent and must be replaced;
refer to
Removing and Installing the Cutting-Unit
Blade(s) (page 21) .
Removing and Installing the
Cutting-Unit Blade(s)
Replace the blade if it hits a solid object, is out
of balance, or is bent. Always use genuine Toro
replacement blades to ensure safety and optimum
performance.
1. Park the machine on a level surface, raise the
cutting unit to the transport position, engage the
parking brake, shut off the engine, and remove
the key.
Note:
Block or lock the cutting unit to prevent it
from accidentally falling.
2. Grasp the end of the blade using a rag or
thickly-padded glove.
3. Remove the blade bolt, anti-scalp cup, and
blade from the spindle shaft (
Figure 24 ).
g004741
Figure 24
1. Blade bolt 2. Anti-scalp cup
4. Install the blade, anti-scalp cup, and blade bolt
and tighten the blade bolt to 115 to 149 N∙m (85
to 110 ft-lb).
Important:
The curved part of the blade
must point toward the inside of the cutting
unit to ensure proper cutting.
Note:
After striking a foreign object, torque all
spindle-pulley nuts to 115 to 149 N∙m (85 to 110
ft-lb).
Inspecting and Sharpening the
Cutting Unit Blade(s)
Both cutting edges and the sail, which is the turned-up
portion opposite of the cutting edge, contribute to a
good quality of cut.
Maintain sharp blades throughout the cutting season.
Sharp blades create a clean cut without tearing or
shredding the grass blades.
Check the blades for any wear or damage. The sail
lifts the grass up straight, thereby producing an even
cut and gradually wears down during operation.
1. Park the machine on a level surface, raise the
cutting unit, engage the parking brake, put the
traction pedal in
NEUTRAL
, put the PTO lever
in the O
FF
position, shut off the engine, and
remove the key from the ignition.
2. Examine the cutting ends of the blade carefully,
especially where the flat and curved parts of the
blade meet (
Figure 25 ).
Note:
Because sand and abrasive material
can wear away the metal that connects the flat
and curved parts of the blade, check the blade
before using the mower. If you notice wear
(
Figure 25 ), replace the blade.
21