Engine Air Cleaner; Cutter Blades - Scag Power Equipment SWZT36-481FS Operator's Manual

Section 7
10. Replace gas cap and tighten the fuel cap until it
ratchets.
B. REPLACING IN-LINE FUEL FILTER
ELEMENTS
The engine fuel filter should be replaced after every 500
hours of operation or annually, whichever occurs first.
1. Close the shut-off valve.
2. Remove and replace the engine fuel filter. Open the
fuel shut-off valve.
7.6

ENGINE AIR CLEANER

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.
1. Remove the air cleaner cover. Set aside.
2. Remove the air cleaner and inspect.
3. Clean or replace the air cleaner and foam
pre-cleaner as recommended by the engine
manufacturer.
4. Replace the air cleaner cover and secure.
7.7

CUTTER BLADES

A. BLADE INSPECTION
1. Remove the ignition key before servicing the blades.
WARNING
Always wear proper hand and eye protection when
working with cutter blades.
2. Check the cutter blades for straightness. If the cutter
blades appear bent, they will need to be replaced.
3. Check the cutter blades for wear. If any part of the
cutter blade is worn to 1/2 its original thickness,
replace the cutter blade.
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.
4. Check the cutter blades for gouges. If there are
gouges on the top or bottom surfaces of the cutter
blade, replace the cutter blade.
5. If a blade cutting edge is dull or nicked, it should be
sharpened. Remove the blades for sharpening. See
"Blade Replacement."
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
If possible, use a file to sharpen the blade. Using
a wheel grinder may burn the blade.
DO NOT sharpen the blades beyond 1/3 of the
width of the blade. See Figure 7-6.
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.
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