Removing And Installing A Blade; Inspecting And Sharpening The Cutter Blade(S) - Toro Groundsmaster 5910 Operator's Manual

blade is bent and must be replaced; refer to
and Installing a Blade (page
Removing and Installing a
Blade
Replace the blade if it hits a solid object, if it is out of balance,
or if it is bent. Always use genuine Toro replacement blades
to be sure of safety and optimum performance. Never use
replacement blades made by other manufacturers because
they could be dangerous.
1. Raise the mower deck to the highest position.
2. Perform the premaintenance procedure; refer to
Preparing the Machine for Maintenance (page
3. Block the mower deck to prevent it from accidentally
falling.
4. Grasp the end of the blade using a rag or thickly
padded glove and remove the blade bolt, anti-scalp cup,
and blade from the spindle shaft
1. Blade bolt
5. Install the blade, anti-scalp cup, and blade bolt.
6. Torque 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 mower deck to
ensure proper cutting.
Note: After striking a foreign object, torque all the
spindle-pulley nuts to 176 to 203 N·m (130 to 150 ft-lb)
and the blade bolts to 115 to 149 N·m (85 to 110 ft-lb).
Removing
62).
(Figure 99).
Figure 99
2. Anti-scalp cup
Inspecting and Sharpening the
Cutter Blade(s)
Service Interval: After the first 10 hours
Every 50 hours
Before each use or daily
You must consider 2 areas of the blade when checking and
servicing it: the sail and the cutting edge. Both cutting edges
and the sail, which is the turned-up portion opposite of the
cutting edge, contribute to a good quality of cut. The sail
is important because it lifts the grass up straight, thereby
producing an even cut. However, the sail gradually wears
down during operation, which is normal. As the sail wears
down, the quality of cut degrades somewhat, although the
39).
cutting edges are sharp. The cutting edge of the blade must
be sharp so that the grass is cut, not torn. A dull cutting
edge is evident when the tips of the grass appear brown and
shredded. Sharpen the cutting edges to correct this condition.
1. Position the machine on a level surface, raise the
mower deck, engage the parking brake, put the traction
pedal in N
the O
FF
ignition key.
2. Examine the cutting ends of the blade carefully
(especially where the flat and curved parts of the blade
meet) as shown in
Note: Since 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, replace the blade
1. Cutting edge
2. Curved area
3. Examine the cutting edges of all of the blades.
4. Sharpen the cutting edges if they are dull or nicked
(Figure
62
, ensure that the PTO switch is in
EUTRAL
position, shut off the engine, and remove the
Figure 100.
(Figure
Figure 100
3. Wear/slot forming
4. Crack
101).
100).