72
Maintenance Instructions REPLACING/REPAIRING
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 at 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) at section
remains at the blade tip.
● Examine ends of the blade carefully, especially
the intersection where the at section of the
blade turns up to form the “wing tip” (refer to
CHECKING/SERVICING for Mower Blade
Prole 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 o 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 dierence
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 oered 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.