DR Power Walk-behind 12.5 HP Tecumseh with 42 Lawn Deck - Manual (Page 36)

32 DR ® WIDE-CUT LAWN MOWER
Removing and Replacing the Blades
Replace the Blades when worn or damaged, but do not use them for over five (5) years.
BEFORE PERFORMING ANY MAINTENANCE PROCEDURE OR INSPECTION, STOP THE ENGINE AND WAIT
FIVE (5) MINUTES TO ALLOW ALL PARTS TO COOL. DISCONNECT THE SPARK PLUG WIRE, KEEPING IT
AWAY FROM THE SPARK PLUG.
Tools Needed:
•
9/16" Wrench or Socket
•
Torque Wrench (optional)
•
Wear gloves
• 2" x 4" Board to block the Blade
1. Block the Blade with a piece of wood between the Blade and the Mower Deck on the chute side of the
Deck (Figure 22).
2. Loosen (right-hand, regular thread) by turning the Bolt counterclockwise and remove the Blade Bolt,
Lock Washer, Blade Washer, and Blade .
USE CARE WHEN PUSHING OR PULLING THE WRENCH NEXT TO THE BLADE. WEAR GLOVES; IF THE
WRENCH SLIPS OFF THE BOLT, YOU MAY BE SERIOUSLY INJURED.
3. Repeat Steps 1 and 2 for the other Blade.
4. Mount the new Blade, Blade Washer, Lock Washer, and Blade Bolt, in that order, and tighten
securely (Torque 30-40 ft-lbs.).
NOTE: Be sure that you have the Blade seated completely over the small step in the spindle hub before
tightening the Bolt.
5. Repeat Step 4 for the other Blade.
Figure 22
Blocking the Blade