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Section 7
33
1. Loosen the wing nuts securing the air cleaner cover.
Remove the air cleaner cover and set aside.
2. Remove the air cleaner and inspect.
3. Clean or replace the air cleaner as recommended by
the engine manufacturer.
Figure 7-6 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.
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
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.
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 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.
Do not attempt to straighten a bent blade, and
never weld a broken or cracked blade. Always
replace it with an original Scag cutter 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 7-6. 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.
SGB033
Angle Blade Back
Do Not Cut In
X Must NOT Exceed
1/3 Blade Width
X
30
-NOTE-
In extremely dusty conditions it may be neces-
sary to check the element once or twice daily to
prevent engine damage.