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Operating Instructions
●
Check to see if the mower blades are installed
for the correct rotation. The blade cutting
edges should move towards each other at the
front of the deck on standard rotation decks
(e.g., DC42), and towards each other at the
back of the deck on reverse rotation decks
(e.g., DC42R).
Blades Must Operate at
Right Angles (90 Degrees)
Rear Discharge
Chute
Blade Rotation for Standard Rotation
GHS Mower Deck (Bottom View)
Blades Must Operate at
Right Angles (90 Degrees)
Rear Discharge
Chute
Blade Rotation for Reverse Rotation
GHS Mower Deck (Bottom View)
●
Check the amount of flat section remaining at
blade tip. This is the area that is ground away
(re moved) when the blades are sharpened. If
too much of the flat section is removed, the "air
lift" performance or "shovel" effect of the blade
deteriorates to the point that discharge of
grass clippings into the blower chute is
marginal. Replace cutter blades if less than
3/4 in. (19 mm) flat section remains at the
blade tip.
46
FORWARD
Mounting Nut
Torque = 60 lb·ft
(81 N·m)
FORWARD
Mounting Nut
Torque = 60 lb·ft
(81 N·m)
●
Check that the interior of the deck housing and
baffling is reasonably clean and free of grass
and dirt buildup. While some degree of
material buildup can be tolerated, a point is
finally reached where the flow of air and grass
clippings is restricted.
NOTE: One condition that quickly causes a
buildup of material in the deck housing is
mowing grass and/or weeds which are "juicy."
The material collects under the deck with
sticky, green juice. Clo ver and weeds are
especially a problem. The mower deck will
need to be cleaned frequently when operating
in these conditions.
●
Check the deck cutting height setting. When
working in thick, tall grass, lower deck
settings [1.5 to 2 in. (38 to 51 mm) cutting
heights] tend to restrict airflow from moving
into and under the deck. Raising the deck
cutting height will signifi cantly increase airflow
and reduce clogging when working in thick, tall
grass.
●
Check the interior of the chute connecting the
mower deck to the blower for smoothness
and freedom from obstruction.
Check the blower wheel for bent blades and
●
excessive clearance between the blade tip
and the blower housing. A clearance greater
than 1/8 in. (3 mm) will cause a significant loss
of blower performance.
●
Check the blower discharge chute into the
grass catcher for smoothness and freedom
from ob struction.
●
Check the elbow inside the grass catcher for a
buildup of material in the radius of the
elbow. In certain conditions (damp/dirty grass)
a considerable "clump" of material can accu-
mulate at this point, greatly restricting material
and airflow.
Check that the openings in the removable
●
air exhaust screen in the grass catcher are
not plugged. If the screen is clogged, refer to
Cleaning the GHS Exhaust Screen on page
47.
NOTE: An optional exhaust screen with larger
holes (3/4") is available for use when mowing in
wet grass; the screen provides less airflow restric-
tion and more clog resistance (use standard
screen in dry conditions to avoid excessive mate-
rial blowing out of the catcher).
C23i
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