Scag Power Equipment Magnum III, Руководство оператора

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Section 7
37
7.11 CUTTER BLADES
A. Blade Inspection
Check the mower blades for straightness, sharpness and
the condition of cutting edge every 8 hours of operation, or
daily (or more often when mowing abrasive type grass or
operating on sandy soils). Blades will need to be replaced
if worn, bent, cracked or otherwise damaged as described
by blade replacement instructions in this section. The
following procedure should be used to check and sharpen
blades:
1. Remove the ignition key before servicing the blades.
2. Use the mower deck height switch on the instrument
panel to raise the deck to its highest point.
3. Use the mower deck lift switch to tilt the deck up as far
up as it will go.
2. The booster battery must be a 12 volt type. If a vehicle
is used for jump starting, it must have a negative ground
system.
3. When connecting the jumper cables, be sure the positive
is connected to the positive and the negative to the
negative.
4. Check the blades for straightness by marking the tip
position of the blade on the inside of the deck. Then
rotate to the opposite tip of the blade to the same
position. cCompare the difference in blade tip track. If
the track is more than 1/8 inch, the blade is bent and
should be replaced.
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.
5. 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.
B. Sharpening Blades
-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 same bevel as original.
See Figure 7-12. Sharpen only the top of the cutting
edge to maintain sharpness.
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. Use the mower deck height switch on the instrument
30° 30°
X Must NOT Exceed
1/3 Blade Width
Angle Blade Back
Do Not Cut In
WARNING:
WARNING:
Never operate the cutter blades with
the deck in a raised position because
it is hazardous
Figure 7-12 Blade Sharpening