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22
Regular Maintenance
WARNING
For your personal safety, do not handle the sharp
mower blades with bare hands. Careless or
improper handling of blades may result in serious
injury.
WARNING
For your personal safety, blade mounting
capscrews must each be installed with two spring
washers or a hex washer and spring washer, then
securely tightened. Torque blade mounting nut to
70 - 80 ft. lbs. (95 - 108 Nm). Torque blade
mounting capscrew to 45 - 55 ft. lbs. (61 - 75 Nm).
Figure 18. Balancing The Blade
Workbench
Nail
LOOSEN
Figure 19. Blade Removal
Figure 20. Blade Installation Mowers (38“ & 42“ Mowers)
A. 4x4 Wood Block
B. Spring Washers
C. Blade Nut
A
B
C
Servicing the Mower Blades
Service Interval: Every 100 Hours or As Required
1. Remove mower deck (see “Mower Deck Removal”).
2. See Figure 19. To remove blade for sharpening, use
a block of wood to prevent blade rotation while
loosening the capscrew.
3. Remove the nut (C, Figure 20), spring washers (B),
and blade. Or remove the capscrew (D, Figure 21),
hex washer (B), spring washer (C), and blade.
4. Use a file to sharpen blade to a fine edge. If blade is
damaged, it must be replaced.
5. Balance the blade as shown in Figure 18. Center the
blade’s hole on a nail lubricated with a drop of oil. A
balanced blade will remain level.
6. Reinstall the blade (Figures 21) with the tabs pointing
up toward the mower deck as shown.
7. Reinstall the spring washers (B, Figure 20) and nut
(C). Use a wooden block (A) to prevent blade rotation
while tightening the nut (C) to 70-80 ft. lbs. (95-108
Nm). Or Reinstall the hex washer (B, Figure 21),
spring washer (C) and capscew (D). Use a wooden
block (A) to prevent blade rotation while tightening
the nut (D) to 45-55 ft. lbs. (61-75 Nm).
Figure 21. Blade Installation Mowers (44“ & 50“ Mowers)
A. 4x4 Wood Block
B. Hex Washer
C. Spring Washer
D. Blade Capscrew
A
B
C
D