Cutting Blades - DeWalt DW33 Instruction Manual

ENGLISH
PRODUCT CARE, cont'd
7. Looking at the cutting deck from the left side, locate and carefully remove the hairpin
clips (a) that secure the deck supports on the rear left side and front left side of the
deck. See Figure 17.
8. Repeat the Step 7 on the mower's right side.
9. Carefully remove the front deck supports from the deck lift arms. See Figure 17.
10. Carefully unhook the mower's lift assembly from the rear deck supports.
11. Use the deck height lever to raise the lift assembly to its highest position.
12. Remove the wooden blocks from under the deck and gently slide the cutting deck
toward the rear of the machine.
13. Pull the click pin (a) out and unhook the drive spring cable from the idler arm assembly.
See Figure 18.
14. Gently slide the cutting deck to the right, out from beneath the mower.
15. To install the cutting deck, follow Steps 1-14 in reverse order to reattach deck and
belt cover.
16
Lift Arm
Figure 17
Figure 18

Cutting Blades

WARNING: Shut the engine OFF and remove ignition key (if so equipped)
before removing the cutting blade(s) for sharpening or replacement. Protect
your hands by using heavy gloves when grasping the blades.
WARNING: Periodically inspect the blade and/or spindle for cracks or
damage, especially after you've struck a foreign object. Do not operate the
machine until damaged components are replaced.
To remove the blades, proceed as follows:
1. Remove the deck from beneath the mower (refer to Cutting Deck Removal on page
15), then gently flip the deck over to expose its underside.
2. Place a block of wood between the center deck housing baffle and the cutting blade to
act as a stabilizer.
See Figure 19.
3. Remove the hex flange nut (a) that secures the blade to the spindle assembly. See
Figure 19.
4. To properly sharpen the cutting blades, remove equal amounts of metal from both
ends of the blades along the cutting edges, parallel to the trailing edge, at a 25° to 30°
angle. Always grind each cutting blade edge equally to maintain proper blade balance.
See Figure 20.
CAUTION: If the cutting edge of the blade has previously been sharpened, or
if any metal separation is present, replace the blades with new ones..
WARNING: A poorly balanced blade will cause excessive vibration, may
damage the mower and/or result in personal injury.
5. Test the blade's balance using a blade balancer. Grind metal from the heavy side until it
balances evenly.
NOTE: When replacing the blade, be sure to install the blade with the side of the blade
marked ''Bottom'' (or with a part number stamped in it) facing the ground when the
mower is in the operating position.
CAUTION: Use a torque wrench to tighten the blade spindle hex flange nut to
between 70 ft-lb and 90 ft-lb.
CAUTION: The cutting blades
If the blades cannot be installed perpendicular to each other, the blade timing
belt must be reset. See your authorized service dealer to have the deck's
timing belt reset.
Figure 19
Figure 20
must
be installed perpendicular to each other.