Land Pride AFM4522, Operator'S Manual

Page: 42 / 58

Section 5: Maintenance & Lubrication
Table of Contents
AFM4522 All-Flex Grooming Mower 315-360M 11/18/21
38
Refer to Figure 5-4:
2. Remove blades by grasping the blade end (#1) with a
rag or thick padded glove while loosening the blade
mounting bolt (#4).
3. Remove center blade bolt (#4) and two outside blade
bar bolts (#5) from bottom of blade to be replaced.
WARNING
!
To avoid serious injury or death:
•
Replace mower blades with genuine Land Pride blades
only.
•
See Figure 5-4. If blade bar (#2) has been removed from
spindle shaft (#3), apply “Loctite 243” to external threads
on spindle shaft (#3) and threads on the center spindle bolt
(#4) before reinstalling existing or new blade bar. Without
Loctite 243, the startup torque of unit can let blade assembly
unscrew thus dropping it from the spindle/mower.
Blade & Blade Bar Removal
Figure 5-4
4. Reinstall blade, blade washer, and bolt. Care should
be taken when installing the blade bolt to not get it
cross threaded and to know if the bolt is right-hand or
left-hand. Do not exceed 55 ft.-lb (75 N· m) of torque
on bolt.
IMPORTANT:
Always install blade with cutting edge
facing direction of rotation and wing tips pointing up.
18952
5. Reinstall the two outside bolts. Tighten bolts to the
correct torque listed in the “Torque Values Chart for
Common Bolt Sizes”
on page 52.
Blade Sharpening
WARNING
!
To avoid serious injury or death:
Wear eye protection and gloves while inspecting, removing,
sharpening, and replacing a blade.
1. A cutting blade should be replaced or sharpened if it
is dull or nicked.
2. Clean blade washer and blade mounting surface
before installing a new blade. Also clean the old
blade if you plan to sharpen it for reuse.
Refer to Figure 5-5:
3. Maintain sharpness by grinding only the top of the
cutting edge at the same bevel as the original edge.
Blade Sharpening
Figure 5-5
Refer to Figure 5-6:
4. Check blade balance by positioning the blade
horizontally on a nail or shaft through the blade’s
center hole. If either end of blade rotates downward,
grind (remove) metal on that end until blade will
balance horizontally on the nail. The blade is
properly balanced when neither end drops. Balance
of a blade is generally maintained by removing an
equal amount of material from each end of the blade.
Blade Balancing
Figure 5-6
NOTE:
Care should be taken to not remove more
material than necessary when sharpening blades.
19327
NAIL OR SHAFT
HORIZONTAL
19046