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Figure 88
1. Single point adjustment bolt
11. Tighten the 2 bolts at the bottom of the height-of-cut
plate
(Figure
87).
Note: In most conditions, ensure the back, blade tip is
adjusted 6.4 mm (1/4 inch) higher than the front.
12. Torque the 2 bolts to 37 to 45 N∙m (27 to 33 ft-lb).
13. On both sides of the deck, measure from the level
surface to the back tip of the blade (position B) as
shown in
Figure
85.
Note: The measurement should read 8.3 cm (3-1/4
inches)
14. Fine-tune the screw adjuster by turning it to get 8.3
mm (3-1/4 inches) height
Note: To increase the height, turn the adjustment nut
clockwise; to decrease, turn counterclockwise.
15. Measure until all 4 sides are the correct height.
16. Tighten all the nuts on the deck-lift-arm assemblies.
Servicing the Cutting Blades
Important: The right blade on this mower deck is
counter-rotating and uses a left threaded blade bolt. Use
Figure 92
for the correct placement of the mower 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.
WARNING
A worn or damaged blade can break, and a piece
of the blade could be thrown at you or bystanders,
resulting in serious personal injury or death.
• Inspect the blades periodically for wear or
damage.
• Replace a worn or damaged blade.
(Figure
86).
Before Inspecting or Servicing the
Blades
1. Park the machine on a level surface, disengage the
blade-control switch (PTO), and set the parking brake.
2. Turn the ignition key to O
disconnect the spark plug wires from the spark plugs.
Inspecting the Blades
Service Interval: Before each use or daily
1. Inspect the cutting edges
2. If the edges are not sharp or have nicks, remove and
sharpen the blade; refer to
60)
and
Sharpening the Blades (page
3. Inspect the blades, especially in the curved area.
4. If you notice any cracks, wear, or a slot forming in this
area, immediately install a new blade
1. Cutting edge
2. Curved area
Checking for Bent Blades
1. Disengage the blade-control switch (PTO), move the
motion-control levers to the N
and set the parking brake.
2. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Rotate the blades until the ends face forward and
backward
(Figure
4.
Measure from a level surface to the cutting edge,
position A, of the blades
dimension.
59
. Remove the key, and
FF
(Figure
89).
Removing the Blades (page
61).
(Figure
Figure 89
3. Wear/slot forming
4. Crack
-
EUTRAL
LOCK
90).
(Figure
90). Note this
89).
position,
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