Product Manual

24
Regular Maintenance
Servicing the Mower Blades
Service Interval: Every 100 Hours or As Required
1. Remove mower deck (see “Mower Deck Removal”).
2. See Figure 22. To remove blade for sharpening, use
a block of wood to prevent blade rotation while
loosening the capscrew.
3. 38”, 44”, & 50” Mowers: Remove the capscrew (D,
Figure 24), spring washer (C), large washer (B), and
blade.
40” Mowers: Remove the capscrew (A, Figure 25),
spring washer (F), spline washer (G), alignment pin
(E) and blade (D). Do not remove the blade adapter
(C).
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 23. 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 24) with the tabs pointing
up toward the mower deck as shown.
7. 38”, 44”, & 50” Mowers: Reinstall the large washer
(B, Figure 24), spring washer (C) and capscrew (D).
Use a wooden block (A) to prevent blade rotation
while tightening the capscrew (D) to 45-55 ft. lbs. (61-
75 Nm).
40” Mowers: Positioned blades perpendicular to
each other as shown in Figure 26. If not, perform the
Mower Blade Timing procedure found in this section.
Reinstall the spline washer (G, Figure 25), spring
washer (F) and capscrew (A). Use a wooden block
(B) to prevent blade rotation while tightening the
capscrew (A) to 61-75 N.m (45-55 ft. lbs.).
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 a hex
washer and spring washer, then securely
tightened. Torque blade mounting capscrew to
45 - 55 ft. lbs. (61 - 75 Nm)
Figure 23. Balancing The Blade
Workbench
Nail
LOOSEN
Figure 22. Blade Removal
Figure 24. Blade Installation Mowers
A. 4x4 Wood Block
B. Hex Washer
C. Spring Washer
D. Blade Capscrew
A
B
C
D