Mower Blades - Walker B27i Operator's Manual

B27i

Mower Blades

Mower blades are removed and remounted as
described in Sharpen Mower Blades on page
56. During 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 machine:
● 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
the illustration Mower Blade Profile for Sharp-
ening on page 57 for location of the wing tip
and wear area). Since sand and abrasive
material can wear metal away in this area, the
blade should be replaced when metal thick-
ness has worn to 1/16 in. (1.6 mm) or less.
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 differ-
ence 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.
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.
DANGER
WARNING
Maintenance Instructions
Reinstall the blades following procedure from
Sharpen Mower Blades on page 56. If blades
are replaced, always use Walker original equip-
ment blades to ensure safety and optimum perfor-
mance. The quality and performance of replace-
ment blades offered by other manufacturers
cannot be guaranteed, they could be dangerous.
CAUTION
ALWAYS use genuine factory replacement
parts. Substitute parts CAN result in prod-
uct malfunction and possible injury to the
operator.
Replacing and Repairing
63