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Section 7
35
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
7.8 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 service center for belt
adjustment.
7.9 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 lanyard pin in the highest cutting height positon to
prevent the cutter deck from falling.
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 by pulling hard.
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. See Figure 7-9, Page 33.
1. Sharpen the cutting edge at the same bevel as the
original. See Figure 7-9, Page 33. 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.
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.
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 lanyard 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.
SGB033
Angle Blade Back
Do Not Cut In
X Must NOT Exceed
1/3 Blade Width
X
30