73
Maintenance Instructions
REPLACING/REPAIRING
If these bolts shear, remove the blade and install
new bolts. Refer to
CHECKING/SERVICING
in
this section for
Sharpen Mower Blades
which de
scribes the blade removal and installation proce
dure.
After reinstalling the blade, check blade timing (on
gear driven decks) by moving blades through
one
(1) complete revolution.
Make sure blade tips
pass clear of each other. If timing is incorrect, con
tact your Walker dealer.
Mower Blades
Mower blades are removed and remounted as de
scribed in
Sharpen Mower Blades
instructions (re
fer to
CHECKING/SERVICING
in this section). Dur
ing the course of sharpening and inspecting mower
blades, if there are
any of the following conditions
of wear or damage, blades should be replaced
for reasons of safety and performance of the ma
chine:
● An excessive amount of the
flat section
of the
blade has been
ground away
(removed) when
the blade is sharpened. Replace the blade
when less than a 3/4 in. (19 mm) flat section
remains
at the blade tip.
● Examine ends of the blade carefully, especially
the intersection where the flat section of the
blade turns up to form the “wing tip” (refer to
CHECKING/SERVICING
for
Mower Blade
Profile for Sharpening
illustration in
Sharpen
Mower Blades
instructions). Since sand and
abrasive material can wear metal away in this
area, the blade should be
replaced when met-
al thickness has worn to 1/16 in. (1.6 mm) or
less.
DANGER
When blades are operated over sandy
soil, and if blades are allowed to wear, a
“slot” may be worn into the wing tip of
blade. Eventually a piece of the blade
may break off creating a serious potential
for injury or damage.
● Check the blades for
straightness
by marking
blade tip position inside the deck housing and
then rotating the opposite end of the blade to the
same position and comparing. If the difference
in blade tip track is
more than 1/8 in. (3 mm),
the blade is bent and
should be replaced.
● Inspect the blade surface, especially in formed
areas, for
cracks.
Replace the blade if any
cracks are found.
WARNING
DO NOT try to straighten a blade that is
bent. NEVER weld a broken or cracked
blade. ALWAYS replace with a new blade
to assure safety.
Reinstall the blades following procedure from
Sharpen Mower Blades
instructions in
CHECK-
ING/SERVICING
in this section. If blades are re
placed, always use
Walker original equipment
blades
to ensure safety and optimum performance.
The quality and performance of
replacement
blades offered by other manufacturers
cannot be
guaranteed, they
could be dangerous.
CAUTION
ALWAYS use genuine factory replace-
ment parts. Substitute parts CAN result
in product malfunction and possible in-
jury to the operator.
