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. Tighten blade mounting capscrew to 30 +/- 3 Nm.
CAUTION
At the moment the mower blades hit a solid object, stop the engine immediately and check the blades. The shear pins may be damaged or cut.
Servicing the Mower Blades
Service Interval: Every 100 Hours or As Required
NOTE: The mower blades must be sharp, balanced, and straight. These conditions are important for the evenness of height of mowing and quality of cut. The blunt cutting edge worsens both the quality of mowing and result of mowed grass collecting.
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.Remove the capscrew (A, Figure 24), spring washer (B), spline washer (E), alignment pin (C) and blade
(D).Do not remove the blade adapter (F).
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 with the tabs pointing up toward the mower deck as shown.
7.Position blades perpendicular to each other as shown in Figure 26. If not, perform “Check Mower Blade Timing” in this section.
8.Reinstall the spline washer (E, Figure 24), spring washer (B) and capscrew (A). Use a wooden block to prevent blade rotation while tightening the capscrew
(A)30 +/- 3 Nm.
Regular Maintenance
LOOSEN
Figure 22. Blade Removal
Workbench |
Nail |
Figure 23. Balancing The Blade
23
