Scag Power Equipment Liberty Z SZL36-18FR Operator's Manual page 40

R
- NOTE -
Keep the blades sharp. Cutting with dull blades not
only yields a poor mowing job, but slows the cutting
speed of the mower and causes extra wear on the
engine and the blade drive by pulling hard.
B. BLADE SHARPENING
- NOTE -
If possible, use a file to sharpen the blade. Using
a wheel grinder may burn the blade.
- NOTE -
DO NOT sharpen the blades beyond 1/3 of the
width of the blade. See Figure 7-9.
1. Sharpen the cutting edge at the same bevel as the
original. See Figure 7-9. Sharpen only the top of the
cutting edge to maintain sharpness.
Do Not Cut In
30
Figure 7-9. Blade Sharpening
2. Check the balance of the blade. If the blades are out
of balance, vibration and premature wear can occur.
The cutter blades should be balanced to 1-1/2 oz-in.
See your authorized Scag dealer for blade balancing
or special tools, if you choose to balance your own
blades.
C. BLADE REPLACEMENT
WARNING
Mowers blades are sharp. Always wrap blades,
wear proper hand and eye protection when
working with cutter blades.
1. Remove the ignition key before replacing the blades.
Angle Blade Back
X Must NOT Exceed
1/3 Blade Width
SGB033
36
2. Raise the mower deck to the highest position. Place
the lanyard pin in the highest cutting height position
to prevent the cutter deck from falling.
3. Secure the cutter blades to prevent them from
rotating, (use the optional Blade Buddy tool P/N
9212, to assist in securing the cutter blades), remove
the blade attaching bolt. Remove the cutter blade,
bolt, lockwasher and flatwasher from the spindle
shaft. See Figure 7-10.
CAUTION
Inspect the cutter blade spacer(s) and washer
for wear and/or cupping. Replace the worn parts.
Worn spacer(s) and/or washer will not allow
proper tightening of the cutter blade and can lead
to cutter blade failure, personal injury or property
damage.
4. To install the new cutter blade, put the lockwasher
and flatwasher onto the blade bolt and slide the bolt
into the hole in the cutter blade.
CUTTER BLADE
LOCKWASHER
5/8-11 x 1-1/2" HEX HEAD BOLT
TORQUE TO 75 FT/LBS
Figure 7-10. Blade Replacement
- NOTE -
Be sure that the blade is installed with the lift wing
toward the top.
5. Install the cutter blade onto the cutter spindle shaft.
Secure the blades from rotating and torque to 75 ft/
lbs. See Figure 7-10.
Section 7
FLATWASHER