g014840
Figure 52
1.
Bedbar-adjusting screw
4.
Rotate the reel so that a blade crosses the
bedknife edge between the first and second
bedknife screw heads on the right side of the
cutting unit.
5.
Insert the 0.05 mm (0.002 inch) shim between
the marked blade and the bedknife edge at
the point where the marked blade crosses the
bedknife edge.
6.
Turn the right bedbar-adjusting screw until you
feel light pressure (i.e., drag) on the shim by
sliding it side-to-side (
).
7.
Remove the shim.
8.
For the left side of the cutting unit, slowly rotate
the reel so that the closest blade crosses the
bedknife edge between the first and second
screw heads.
9.
Repeat steps
through
for the left side of the
cutting unit and left bedbar-adjusting screw.
10.
Repeat steps
through
until light drag is
achieved on both the right and left sides of the
cutting unit utilizing the same contact points.
11.
To obtain light contact between the reel and
bedknife, turn each bedbar-adjusting screw
clockwise 3 clicks.
Note:
Each click turned on the bedbar-adjusting
screw moves the bedknife 0.018 mm (0.0007
inch). Clockwise rotation moves the bedknife
edge closer to the reel and counterclockwise
rotation move the bedknife edge away from the
reel.
12.
Test the cutting performance by inserting a long
strip of cutting performance paper between the
reel and bedknife, perpendicular to the bedknife
(
). Slowly rotate the reel forward; it
should cut the paper.
g007602
Figure 53
Note:
If you see excessive contact/reel drag, it
will be necessary to backlap, face the front of
the bedknife, or grind the cutting unit to achieve
the sharp edges that are necessary for precise
cutting.
Adjusting the Height-of-Cut
1.
Verify that the rear roller is level and that the
bedknife-to-reel contact is correct. Tip the
machine back on the handle to expose the front
and rear rollers and the bedknife.
Important:
Do not tip the machine at an
angle greater than 25°. Tipping the machine
beyond 25 ° leads to oil leaking into the
combustion chamber and/or fuel leaking out
of the fuel-tank cap.
2.
Loosen the locknuts that secure the height-of-cut
arms to the height-of-cut brackets (
).
g007603
Figure 54
1.
Height-of-cut arm
3.
Locknut
2.
Height-of-cut bracket
4.
Adjusting screw
3.
Loosen the nut on the gauge bar (
)
and set the adjusting screw to the desired
height-of-cut. The distance between the bottom
of the screw head and the face of the bar is the
height of cut.
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