Snapper 20HP, 19HP, 18HP Lawn Mower User Manual


 
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Maintenance
SERVICING THE MOWER BLADES
Service Interval: Every 10 Hours or As Required
1. Remove mower deck (see “Mower Deck
Removal”).
2. See Figure 17. To remove blade for sharpening,
use a block of wood to prevent blade rotation while
loosening the capscrew.
3. Remove the capscrew (D, Figure 19), spring
washer (C), hex washer (B), 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 (Figure 19) with the tabs
pointing up toward the mower deck as shown.
7. Reinstall the hex washer (B, Figure 19), 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 N.m).
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/spline washer and spring washer, then
securely tightened.Torque blade mounting
capscrew to 45-55 ft. lbs. (61-75 N.m.)
Figure 18. Balancing The Blade
Workbench
Nail
Figure 17. Blade Removal
A
D
C
B
Figure 19. Blade Installation
A. 4x4 Wood Block
B. Hex Washer
C. Spring Washer
D. Blade Capscrew
Regular Maintenance