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Section 7
If a blade cutting edge is dull or nicked, it should be 4.
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.
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 7-2.
Sharpen the cutting edge at the same bevel as the
1.
original. See Figure 7-2. Sharpen only the top of the
cutting edge to maintain sharpness.
SGB033
Angle Blade Back
Do Not Cut In
X Must NOT Exceed
1/3 Blade Width
X
30
Blade SharpeningFigure 7-2.
Check the balance of the blade. If the blades are out 2.
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.
ENGINE AIR CLEANER7.5
A. CLEANING AND/OR REPLACING AIR
CLEANER ELEMENT
For any air cleaner, the operating environment dictates
the air cleaner service periods. Inspect and clean the air
cleaner element after every 100 hours of operation or bi-
weekly, whichever occurs first and replace the element if
required.
- NOTE -
In extremely dusty conditions it may be necessary
to check the element once or twice daily to prevent
engine damage.
Remove the air cleaner cover. Set aside.1.
Remove the air cleaner and inspect.2.
Clean or replace the air cleaner and foam 3.
pre-cleaner as recommended by the engine
manufacturer.
Replace the air cleaner cover and secure.
4.
CUTTER BLADES7.6
A. BLADE INSPECTION
Remove the ignition key before servicing the blades.1.
Raise the mower deck to the highest position. Place 2.
the lanyard pin in the highest cutting height position
to prevent the cutter deck from falling.
WARNING
Always wear proper hand and eye protection when
working with cutter blades.
Check the cutter blades for straightness. If the cutter 3.
blades appear bent, they will need to be replaced.
WARNING
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.