Removing and Replacing Fixed Blades
Note: Replace Blade(s) when worn or damaged.
Tools and Supplies needed:
• 1-1/8 in Wrenches
• Torque Wrench
• Gloves
• Jack
• Jack Stands
• Wheel Chocks
• Dense Wooden Block (recommend 4 in x 4 in)
1. Disconnect BRUSH MOWER from the TOW Vehicle.
2. Lift and support front of Mower off Ground using a Jack and Jack Stands.
Chock rear wheels to prevent them from moving.
3. Insert a Wooden Block between Blade and Deck to stop rotation of Blade while
loosening center Bolt.
Note: The Wood Block must be strong enough to safely secure Blade and long
enough to wedge against Deck.
4. Remove Center Bolt by using a 1 1/8 in Wrench. As bolt loosens, Center
Washer, Anti-Wrap Guard, and Blade will also loosen. (Figure 60)
Note: Bolt may be tight and could require additional wrench leverage. Use of air
impact tools is allowable if needed.
5. With Center Bolt, Center Washer, and Anti-Wrap Guard removed, blade can
now be removed from Spindle.
6. Prepare new hardware and blade, whether it is a new or resharpened blade.
7. Prepare new Center Bolt.
8. Apply a ¼ in long bead of Loctite 243
®
½ in from the shoulder of bolt.
9. With prepared Center Bolt set aside, begin to install new or sharpened Blade.
10. First, align and hold Spindle Cover and Anti-Wrap Guard up into Spindle
Shaft.
11. With Spindle Cover and Anti-Wrap Guard in place, align Blade on Spindle. Make
sure center hole on Blade aligns properly with Spindle Shaft.
Note: It is good to have an extra set of hands for this next step as it will be difficult to
keep Spindle Cover, Anti-Wrap Guard, and Blade held in place.
12. Ensure the Blade is oriented with Blade Lift Edge pointing up towards the top of
Deck. Bring Blade up onto Spindle Shaft, making sure Anti-Wrap Guard and
Spindle Cover are still aligned.
13. With Blade held up onto Spindle, Spindle Shaft Surface will sit slightly below Blade
surface. This is by design, to provide clamping force from Bolt and Washer.
14. With all parts aligned onto the Spindle, bring Center Washer and Center Bolt up
into Spindle Shaft. Begin to tighten Center Bolt to fasten all parts together.
15. Tighten Center Bolt with 1-1/8 in Wrench.
16. Torque Center Bolt to 100 ft-lb using a properly calibrated Torque Wrench.
17. Repeat steps 3 through 17 to remove and install other Blade.
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