Exmark QUEST QZS708GEM50200 Operator's Manual page 56

Maintenance
Check the cutter blades daily for sharpness, and for
any wear or damage. File down any nicks and sharpen
the blades as necessary. If a blade is damaged or
worn, replace it immediately with a genuine Exmark
replacement blade. For convenient sharpening and
replacement, you may want to keep extra blades on
hand.
WARNING
A worn or damaged blade can break, and a piece
of the blade could be thrown into the operator's
or bystander's area, resulting in serious personal
injury or death.
• Inspect the blade periodically for wear or
damage.
• Replace a worn or damaged blade.
Before Inspecting or Servicing the
Blades
Park the machine on a level surface, disengage the
blade control switch, and move the motion control
levers outward to neutral lock, and engage the
parking brake. Stop the engine, remove the key, and
disconnect the spark plug wire(s) from the spark
plug(s).
Inspecting the Blades
1. Inspect the cutting edges (Figure 61). If the edges
are not sharp or have nicks, remove and sharpen
the blades; refer to Sharpening the Blades.
2. Inspect the blades, especially the curved area. If
you notice any damage, wear, or a slot forming in
this area (item 3 in Figure 61), immediately install
a new blade.
1. Cutting edge
2. Curved area
Figure 61
3. Wear/slot forming
4. Damage
Checking for Bent Blades
Note: The machine must be on a level surface for
the following procedure.
1. Raise the mower deck to the highest height-of-cut
position; also considered the 'transport' position.
2. While wearing thickly padded gloves or other
adequate hand protection slowly rotate blade to
be measure into a position that allows effective
measurement of the distance between the cutting
edge and the level surface the machine is on.
1. Deck
2. Spindle housing
3. Measure from the tip of the blade to the flat
surface here.
1. Blade, in position for measuring
2. Level surface
3. Measured distance between blade and surface (A)
g006530
4. Rotate the same blade 180 degrees so that the
opposing cutting edge is now in the same position.
56
Figure 62
3. Blade
Figure 63
g014972
g014973