The Cutting Blade is specially hardened but will become dulled by embedded objects in the tread.
To insure a clean, smooth job sharpen when necessary.
Blade life depends on the operator almost as much as differences in rubber from one tire brand to
another. A blade will last longer on newer tires as opposed to older tires or tires with pebbles and
debris not cleaned properly from the tread.
The cutter gauge measures the depth of cut.
Turning it one full revolution makes the cutting blade move 1/8” (.125”) into or away from the tire.
In no case should a single cut be more than 1/32” in depth. Basically from 0 to 30 on the gauge,
which is .030 inches. Still, we suggest starting with a .020 inch cut.
There’s marks all the way around the gauge so if one forgets to pre-set the cutter gauge, you can
always use somewhere on the dial for a starting reference point.
Between
e
ach mark = .005”
OPERATING INSTRUCTIONS (Cont’d)
5. Advance cutter blade to touch tire: Make dust mark at tire center.
Now, with unit on advance the cutter head / blade to barely make contact with tire. This is referred to
as a “Dust Mark.” The Dust mark gives you visual confirmation how out of round the tire actually is
and can roughly identify how much tread will be removed in order to make the tire round.
6. Set cutting depth for “rough cut” and proceed. Pass outer edge of tire.
Slowly advance the Infeed Drive Screw and set the cutter blade cut depth. Note the cutting gauge
location.
Using the Crossfeed Drive Screw on the top deck slowly traverse the top deck & cutting blade
across the right half of the tread. Turn the infeed screw to match the profile of the tire.
Observe the rate of speed you’re moving the top deck and how consistent your cut is being made.
Go faster or slower to suit the desired end-result. Continue until blade clears outer edge of tire.
7. Sharpen to razor sharp.
Upon completing the end of your first pass of the tread, make sure the cutter blade passes by the
outer edge of the tire. Back the top deck and cutting blade away from tire (be careful not to lose
where your ‘zero’ setting is) using the infeed drive screw. With motor still ON, proceed to use the
manual sharpener to sharpen the blade razor sharp in a
counter
clockwise direction.
More sparks will be visible when sharpening a duller cutting blade.
Remember: Always sharpen the cutter blade in the same direction.
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