Walker S14i Operator's Manual page 46

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.,
DC36R).
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. Re­
place cutter blades if less than 3/4 in. (19 mm)
flat section remains at the blade tip.
42
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 mate­
rial buildup can be tolerated, a point is finally
reached where the flow of air and grass clip­
pings is restricted.
NOTE:
One condition that quickly causes a
buildup of material in the deck housing is mow­
ing 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 con­
ditions.
● 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 con­
siderable "clump" of material can accumulate 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 Clean-
ing the GHS Exhaust Screen in this section.
NOTE: An optional exhaust screen with larger
holes (3/4") is available for use when mowing in wet
grass; the screen provides less airflow restriction
and more clog resistance (use standard screen in
dry conditions to avoid excessive material blowing
out of the catcher).
Remember, anything that restricts airflow or mate­
rial flow along the entire path from the mower deck
to the grass catcher can cause clogging.