Toro TimeCutter Z4220 Operator's Manual page 36

1. Sail area of blade
2, Blade
3., Curved washer
Figure 43
4,, Blade bolt
5, Blade stiffener
Sharpening the Blades
Use a file to sharpen the cutting edge at both ends
of the blade (Figure 44"), Maintain the original angle,
The blade retains its balance if the same amount of
material is removed from both cutting edges,
Figure 44
Sharpen at odginal angle
G000552
,,
Check the balance of the blade by putting it on a
blade balancer (Figure 45). If the blade stays in a
horizontal position, the blade is balanced and can be
used. If the blade is not balanced, file some metat off
the end of the sail area only (Figure 44), Repeat this
procedure until the blade is balanced,
1
Figure 45
1 Blade 2 Balancer
G000553
Installing the Blades
1, Install the blade onto the spindle shaft (Figure 4,3),_
Important:
The curved part of the blade must
be pointing upward toward the inside of the
mower to ensure proper cutting.
2, Install
the blade stiffener, the curved washer (cupped
side toward the blade) and the blade bolt (Figure 43).
3, Torque the blade bolt to 35-65 ft-lb (47-88 N-m),
LeveBing the Mower Deck
Check to ensure the mower deck is level any time you
instal1 the mower or when you see an uneven cut on
your lawn,
The mower deck must be ched_ed for bent blades
prior to leveling; any bent blades must be removed
and replaced, Refer to the Cheddng for Bent Blades
procedure before continuing
The mower de& must be leveled side-to-side first then
the front to rear slope can be adjusted.,
Requirements:
" The machine must be on a level surface
. All four _e must be properly inflated, Refer to
Checldng the Tire Pressure in the Drive System
Maintenance section.
Side-to-Side Leveling
1, Park the macbJne on a level surface and disengage
the blade control switch,
2, Move the motion control levers out-wad to the
park position, stop the engine, remove the key, and
wait for all mox4mg parts to stop before leaving the
operating position.,
.3,, Set the height-of-cut lever to middle position,,
4, Carefully rotate the blades so that they are atl side to
side _igure 46 and Figure 47),,
2 1
GO096B2
Figure 46
Mower Decks with 2 Blades
t, Blades side to side 3. Outside cutting edges
2. Sail area of blade 4, Measure from the tip of the
blade to the fiat surface
here
36