Scag Power Equipment SFZ - Manual (Page 37)

Section 7
33
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 before replacing the blades.
2. Raise the mower deck to the highest position. Place the
cutting height pin in the highest cutting height positon
to prevent the cutter deck from falling.
Figure 7-8 Blade Sharpening
7.7 DRIVE BELTS
All drive belts are spring loaded and self-tensioning, however
after the first 2, 4, 8 and 10 hours of operation, the belts
should be checked for proper alignment and wear.
Thereafter, check the belts after every 40 hours of operation
or weekly, whichever occurs first.
-NOTE-
If you experience frequent belt wear or breakage, see
your authorized Scag Dealer for belt adjustment.
7.8 CUTTER BLADES
A. Blade Inspection
1. Remove the ignition key before servicing the blades.
2. Raise the mower deck to the highest position. Place the
pin in the highest cutting height positon to prevent the
cutter deck from falling.
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
WARNING:
4. If a blade cutting edge is dull or nicked, it should be
sharpened. Remove the blades for sharpening. See
"Blade Replacement."
-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.
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.
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.
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.
3. Check the cutter blades for straightness. If the cutter
blades appear bent, they will need to be replaced.
Always wear proper hand and eye protection
when working with cutter blades.
WARNING:
S GB033
Angle Blade Back
Do Not Cut In
X Must NOT Exceed
1/3 Blade Width
X
30