Ryobi TR45 - Manual (Page 14)

Page 14 Page 15
OPERATION
Fig. 9
DEPTH OF CUT
See Figure 9.
Depth of cut affects the rate of feed and the quality of a cut.
Using the proper depth of cut can lessen the possibility of
damage to the trimmer motor and cutter.
A deeper cut requires a slower feed than a shallow one. Mak-
ing a cut that is too deep will slow the feed so that the cutter
is scraping, rather than cutting, and is not recommended.
A too-deep cut can cause smaller cutters to be broken off.
Cutters that are 1/16 in. (1.6 mm) in diameter are easily broken
off when subjected to too much side thrust. A larger cutter is
not as likely to break, but attempting a cut that is too deep
may result in a rough cut, and may make it difficult to guide
and control the cutter as desired.
It is recommended that you do not exceed 1/8 in. (3.2 mm)
depth of cut in a single pass, regardless of the cutter size or
the softness or condition of the workpiece. This will result
in a higher quality cut.
To make deeper cuts, it is necessary to make as many suc-
cessive passes as required, lowering the cutter 1/8 in
(3.2 mm) for each new pass. To save time, perform all the
cutting necessary at one depth setting, then lower the cutter
for the next pass. This will assure uniform depth when the
final pass is completed.
WARNING:
If the desired depth of cut is greater than can be safely
cut in one pass, make cuts in two or more passes. Do
not remove more than 1/8 in. in a single pass. Excessive
depth of cut can result in loss of control and the possibility
of serious personal injury.
WIDTH
OF CUT
DEPTH
OF CUT
2ND.
PASS
1ST.
PASS
1ST. PASS
2ND. PASS