WORX WU407 1400W vibrafree Reciprocating Saw 240V - Manual (Page 9)

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control without positive stops between 1 and 6 according to your
work. Refer to the table to select the proper speed for the workpiece
to be cut. However, the appropriate speed may differ with the type
or thickness of the workpiece. In general, higher speeds will allow
you to cut workpieces faster but the service life of the blade will be
reduced.
Speed setting
Strokes per minute
(WU407)
Strokes per minute
(WU407l)
6 3,000 2,500
5 2,300 2,200
4 1,900 1,900
3 1,700 1,700
2 1,500 1,400
1 1,200 1,200
Material Speed setting
Wood 6
Autoclaved lightweight concrete 5-6
Mild steel 3-4
aluminum 3-5
Plastics 1-4
Stainless steel 1-2
Note:
• If the tool is operated continuously at low speeds for a long period
of time, the operation life of the motor will be reduced.
• The variable speed control can be turned only as far as 6 and back
to 1. Do not force it past 6 or 1, or the speed adjusting function may
no longer work.