Table of Contents
Advertisement
OPERATION AND MAINTENANCE
Disc Blades
1. The 7550 is equipped with24" -4 ga. (.256), or 24" -4
ga. (.256) rollable low concavity disc blades on both
front and rear. The use of other concavity blades can
give unpredictable results and is not recommended.
2. Sharpening – In some cases there is a desire to
sharpen disc blades for improved cutting. There are
several people who roll-sharpen disc blades. Most
disc blades used today are made of chrome-boron
steel. The chrome-boron steel has a higher hardness
than traditional carbon-steel blades for increased
wear. Higher hardness makes roll sharpening more
difficult often with mixed results, and is not covered
by warranty. Disc blade manufacturers will not cover
any alterations to blades other than the place of
manufacture. Results from roll-sharpening damage
may not be immediate, and may take more than a
season to be noticeable. If you choose to sharpen
disc blades, check with local dealers for reputable
experienced sharpeners that will stand behind their
work.
Disc blades are extremely sharp. Exercise
extreme care when working on or near disc
blades. Do not allow discs to roll over or fall onto
any bodily part. Do not allow wrenches to slip
when working near disc blades. Never push
wrenches toward disc blades. Do not climb over
machine above disc blades. Failure to stay clear
of disc blade edges can cause serious personal
injury or death.
4-16
DANGER
Depth Stop Adjustment (Manual)
The operating depth of the 7550 is controlled by a
single-point depth stop. The stop is located at the center
front of the machine.
1. Adjust the depth stop by turning the handle in
(clockwise) to increase operating depth
Figure
4-17.) Turn the handle out
(counter-clockwise) to decrease operating depth.
One turn will equal approximately 1/8" adjustment in
depth.
2. The gauge on the side of the depth stop tube gives a
reference for depth setting. The "A" setting refers to
maximum operating depth.
IMPORTANT
For maximum operating depth, the lift wheels must
be in contact with the ground and carry some of the
machine weight. Raising the lift wheels off the
ground, permits uncontrolled depth of each frame
section and does not allow the leveler to function
properly.
Figure 4-17: Depth Stop Adjustment (Manual)
(See
DEPTH
STOP
TUBE
DEPTH
STOP
GAUGE
DEPTH
STOP
HANDLE
F-987-0519
Advertisement
Chapters
Table of Contents
