Scag Power Equipment SCR - Manual (Page 37)

Section 7
33
Do not attempt to straighten a bent blade, and
never weld a broken or cracked blade. Always
replace it with a new blade to assure safety.
4. If a blade cutting edge is dull or nicked, it should be
sharpened. Remove the blades for sharpening. See
"Blade Replacement."
Never operate the cutter blades with the deck
in the raised position because it is hazardous
and damage to mower will result.
3. Check the blades for straightness. If the cutter
blades appear bent, they will need to be replaced.
WARNING:
WARNING:
7.8 DRIVE BELTS
After the first 2, 4, 8 and 10 hours of operation, check for
proper tension on all drive belts and check for any damage.
Thereafter, check the belt tension after every 100 hours of
operation or bi-weekly, whichever occurs first.
1. Check the belts for cracks, tears, and excessive wear.
Replace any damaged belts.
7.9 CUTTER BLADES
A. Blade Inspection
1. Remove the ignition key before servicing the blades.
2. Tilt the mower deck and secure in place.
-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.
B. Blade Sharpening
-NOTE-
DO NOT sharpen the blades beyond 1/3 of the
width of the blade.
1. Sharpen the cutting edge at the same bevel as the
original. See Figure 7-8. Sharpen only the top of the
cutting edge to maintain sharpness.
Figure 7-8 Blade Sharpening
2. Check the balance of the blade. If the blades are out
of balance, vibration and premature wear can occur.
See your authorized Scag dealer for blade balancing
or special tools, if you choose to balance your own
blades.
C. Blade Replacement
1. Remove the ignition key and engage parking brake
before replacing the blades.
2. Tilt the mower deck and secure in place with lock
pin.
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 nut from the blade attaching bolt. Remove the
cutter blade, bolt and spacer from the spindle shaft.
4. To install the new blade, put the flat washer onto the
blade bolt and slide the bolt into the hole in the cutter
blade.
390S0139
ANGLE BLADE BACK
DO NOT
CUT IN
X MUST NOT EXCEED
1/3 BLADE WIDTH
X
30