EN - 21
3. Return seat to operating position and
slide seat back and forth to spread
grease along tracks.
CHECK MOWER BLADES
Check blades for wear. Replace or sharpen
as needed.
Remove Blades
1. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
2. Disconnect spark plug wires.
3. Remove hardware securing blades to
spindles and remove blades. Retain all
hardware for reinstallation. See
Figure 21.
Sharpen Blades
1. Remove blades. Discard blades if:
• More than 1.3 cm (1/2") of metal is
removed.
• Air lifts are eroded.
• Blades are bent or broken.
2. File or grind an equal amount of material
from each cutting edge of the blade until
sharp. DO NOT change angle of cutting
edge or round the corner of the blade.
See Figure 22.
3. Check blade balance by sliding blade on
an unthreaded bolt. If blade does not
remain horizontal, sharpen the heavy end
until blade is balanced.
Install Blades
1. Reinstall blades and secure with original
hardware. Torque to 156 N•m – 217 N•m
(115 lb-ft – 160 lb-ft).
CAUTION:
AVOID INJURY. Use
sturdy gloves or padding to
protect hands when working with
mower blades.
Rotation of one blade rotates the
other blades.
CAUTION:
DO NOT sharpen
blades while attached to unit.
Figure 21
CAUTION:
Unbalanced blades
cause excessive vibration and
eventual damage to unit.
Balance blades before
reinstalling on unit.
NEVER weld or straighten
blades.
Figure 22
DO NOT sharpen to this
pattern.
Sharpen to this pattern.
DISCARD if more than
1.3 cm (1/2")
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
