Regular Maintenance
Sharpening the Mower Blades
CAUTION
A
Avoid injury. Mower blades are sharp.
• Always wear gloves when handling mower blades or working near blades.
•Always wear safety eye protection when grindingB
1. | Sharpen the mower blade with a grinder, hand file, |
|
| |
Figure 25. Sharpening the Mower Blade | ||||
| or electric blade sharpening. | |||
| A. Mower Blade Bevel | |||
2. | Sharpen the mower blade by removing an equal | |||
B. Mower Blade Cutting Edge | ||||
| amount of material from each end of the mower | |||
|
|
| ||
| blade. |
|
| |
|
|
| ||
3. | Keep the original bevel (A, Figure 25) when |
|
| |
| grinding. Do NOT change the mower blade bevel. |
|
| |
4. | The mower blade should have a maximum 1/64” |
|
| |
|
| |||
| (0,40 mm) cutting edge (B) or less. |
|
| |
5. | Balance the mower blade before installing. |
|
| |
| Balancing the Mower Blades | Reproduction |
| ||
|
| |||
CAUTION |
| orf | A | |
|
|
| ||
|
|
|
| |
| Avoid injury. Keep mower blades balanced. |
|
|
| |
| • An unbalanced mower blade can create |
|
|
| |
| excessive vibration and damage the unit or |
|
|
| |
| cause mower blade failure. | Not |
| Fig re 26. Balancing the Mower Blade |
|
|
|
| ||
|
|
|
| |
1. Clean the mower blade to remove any dried grass | A. Nail |
| ||
or other debris. |
|
|
|
|
2. See Figure 26. Put the mower blade on a nail in a |
|
| ||
vise and turn the blade to the horizontal position. |
|
| ||
3. Check the balance of the mower blade. If either |
|
| ||
end of the mower blade moves downward, |
|
|
| |
sharpen the heavy end until the mow r blade is |
|
| B | |
balanced. See SHARPENING THE MOWER |
|
| ||
|
|
| ||
BLADES for proper sharpening instructions. |
|
|
| |
4. Repeat the process until the mower blade remains |
|
| ||
in the horizontal position. |
|
|
|
|
| Reinstalling the Mower Blades |
|
|
| A |
1. Reinstall each mower blade with the air lifts |
|
| ||
| D |
| ||
pointing up towards the mower deck as shown in |
| |||
|
| |||
Figure 27. Secure with the mower blade mounting |
|
| ||
bolt and flat washer (A & B, Figure 27). |
|
|
| |
2.Wedge a wooden block between the mower blade and the mower deck housing to keep the mower blade from turning and torque to 70 ft. lbs (94 Nm).
Figure 27. Tightening the Mower Blade for
Installation
A. Mower Blade Mounting Bolt
B. Flat Washer
C. Mower Blade Air Lift (Points Up For Installation)
D. 4 X 4 Wooden Block
32 | www.ferrisindustries.com |