Toro Z Master 75990, Operator'S Manual

Page: 65 / 72

Sharpening the Blades
WARNING
When sharpening blades, pieces of a blade
could be thrown and cause serious injury.
Wear proper eye protection when sharpening
blades.
1. Use a file to sharpen the cutting edge at both
ends of the blade (
Figure 97 ). Maintain the
original angle. The blade retains its balance if
the same amount of material is removed from
both cutting edges.
g000276
Figure 97
1. Sharpen at original angle
2. Check the balance of the blade by putting it on
a blade balancer (
Figure 98 ). 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
(
Figure 99 ). Repeat this procedure until the
blade is balanced.
g000277
Figure 98
1. Blade 2. Balancer
Installing the Blades
1. Install the blade onto the spindle shaft ( Figure
99 ).
Important:
The curved part of the blade
must be pointing upward toward the inside
of the mower to ensure proper cutting.
2. Install the spring disk and the blade bolt. The
spring disk cone must be installed toward the
bolt head (
Figure 99 ). Torque the blade bolt to
115 to 150 N∙m (85 to 110 ft-lb).
g004536
Figure 99
1. Sail area of blade 4. Blade bolt
2. Blade 5. Cone toward bolt head
3. Curved washer
Removing the Mower Deck
Before servicing or removing the mower deck, the
spring-loaded deck arms must be locked out.
WARNING
Deck lift arm assemblies have stored energy.
Removing the deck with out releasing the
stored energy can cause serious injury or
death.
Do not attempt to disassemble the deck from
the front frame without locking out the stored
energy.
1. Shut off the engine, wait for all moving parts to
stop, and remove the key. Engage the parking
brake.
2. Remove the height-adjustment pin and lower
the deck to the ground.
3. Place the height-adjustment pin in the 7.6 cm (3
inch) cutting-height location. This locks the deck
lift arms in the lowest position when the deck
is removed and the stored energy in the deck
spring is released.
4. Remove the belt covers.
5. Lift up the floor pan and insert a ratchet into the
square hole in the deck idler (
Figure 100 ).
6. Rotate the deck idler clockwise and remove the
mower belt (
Figure 100 ).
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