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OPERATING
BETTCHER
AIRSHIRZ
®
INSTRUCTIONS
INDUSTRIES, INC. Rev. September 24, 2016
Page 48
9.3.3
Checking Blade Sharpness (Continued)
The recommended way to use the latex sheets is to tape the top edge to the edge of a shelf. Let the
sheets drape down and make vertical cuts as shown.
FIGURE #38
The mating blades should form a small contact point. Hold the blade set up to a light and look
through the gap between the blades. As the blades are closed by hand, the contact point will be
seen to travel from the throat to the blade tip. If this contact point is not present and uniform from
the throat to the tip, the blade nut may need adjusting, or the blades may have been bent.
FIGURE #39
9.3.4
Adjusting the Blade Nut
It is common for a freshly re-sharpened blade set to require a slight tightening of the blade nut.
Other things that may require adjustment of the blade nut are; wear, deformation of the plastic
washer under the locknut, and wear in the self-locking threads after many adjustments. If any of
these other conditions are true, all the parts should be replaced (see Section 9.3.5).
BLADE CONTACT
POINT
HEEL
CONTACT
5/8
HEX
ADJUSTING NUT
GAP