6
NORSE Operating Manual & Parts List 9683113
INSTALLATION (CONTINUED)
EXTENSION CORD LENGTH (240 VOLTS)
Wire Size
A.W.G.
Up to 50 ft.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
50-100 ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
100-200 ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
200-300 ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
NOTE: Using extension cords over 300 ft. long is not recommended.
OPERATION
CAUTION:
Always observe the following safety precautions:
• Make sure that blade guides and thrust bearings are positioned
and adjusted correctly to prevent sideways and rearward move-
ment of the blade. Adjust upper guide to just clear workpiece.
• Check to make sure blade is tensioned and tracking properly.
Do not over tension the blade in order to prevent premature
blade wear and breakage. Avoid under tensioning to eliminate
back and forth, side to side blade movement as it cuts.
• Use proper blade and speed for the cutting operation.
• After turning saw on, allow blade to come to full speed before
attempting any cutting operation.
• Support workpiece properly and use a smooth steady feed to
guide work through the cut. Use push sticks or push blocks
when required.
• Keep hands away and out of line with moving parts.
• Always wear eye protection.
REMOVING BLADE
Refer to Figures 8, 9 and 10 (pages 12, 14 and 16).
WARNING:
Disconnect band saw from power source when
changing or adjusting blades. Wear leather gloves when handling
band saw blades. Never wear gloves when operating saw.
• Loosen three screws (Figure 9, Ref. No. 5). Remove blade guards
(Figure 9, Ref. Nos. 4 and 38). Loosen handle (Figure 8, Ref. No.
30) and rotate handwheel (Figure 8, Ref. No. 23) to release blade
tension. Be careful; blade may spring from saw when tension is
released. Remove table stud (Figure 10, Ref. No. 16), take out the
released blade and replace with another blade.
INSTALLING BLADE
• Although many of the adjustments may not be altered when
blade is removed, every adjustment should be checked prior to
using a newly installed blade.
• Follow safety precautions every time saw is operated.
• Make sure blade teeth are pointing down towards table. Turn
blade inside out if necessary.
• Slip new blade into table slot and over upper and lower blade
wheels and center blade on blade wheels. Slide blade in be-
tween blade guides. Replace table stud. Replace blade guards
after blade guide adjustment.
• Tension and track blade as described in the following sections.
TENSIONING BLADE
Refer to Figure 8, page 12.
• Tension blade by rotating handwheel (Ref. No. 23). Be sure blade
guides do not interfere with blade path.
• Tighten blade until it is properly tensioned.
• A properly tensioned blade will ring slightly when back of blade
is plucked (like a string on an instrument).
NOTE: Check tension of new blade. Additional tension may be re-
quired after a few minutes of operation.
TRACKING BLADE
Refer to Figure 8, page 12.
• Track blade after it has been tensioned. A change in blade ten-
sion will affect wheel alignment.
• Proper tracking is achieved when drive and idler wheels are
aligned. Knob (Ref. No. 29) is used to tilt tracking bar (Ref. No. 13)
and align blade wheels.
• Loosen hex nuts (Ref. No. 30) which lock tracking knob (Ref. No.
29). Turn idler wheel (Ref. No. 7) by hand and observe how blade
rides on wheels.
• If blade rides away from cabinet, turn knob clockwise to tilt idler
wheel up.
• If blade rides into cabinet, turn tracking knob counterclockwise.
• When blade is tracking properly, lock position by holding knob
and tightening hex nuts (Ref. No. 30) against the cabinet.
ALIGNMENT OF DRIVE WHEEL
Refer to Figure 11, page 18.
NOTE: Only attempt adjusting drive wheel alignment if blade
cannot be properly tracked with tracking adjustment alone.
• A blade under high tension may also pull drive wheel out of
alignment.
• Adjust alignment of drive wheel using hex head bolts (Ref. No. 9).
BLADE GUIDES
NOTE: Adjust blade guides only after blade has been properly
tensioned and tracked.
• Blade guides support blade at sides and rear of blade, and
prevent twisting or deflection.
• Blade guides should not touch blade when no workpiece is in
contact with blade. Adjust guides as described in following
sections.
UPPER BLADE GUIDES
Refer to Figure 9, page 14.
• Upper blade guides employ guide pins for side support and a
ball bearing on an adjusting pin at rear.
• Upper guide bracket (Ref. No. 13) should be positioned so guide
on either side of blade will support as much of blade width as
possible without interfering with the tooth set.
• Adjust bracket depth by loosening bolts (Ref. Nos. 9 and 12) and
sliding brackets into position. Secure position of upper guide
casting by tightening bolts.
• Loosen set screws (Ref. No. 15) and adjust guide pins (Ref. No.
14) to side of blade. Use a feeler gauge to check that guide pins
are .002˝ away from blade.
• Lock adjustment by tightening set screws.
• Adjust thrust bearing (Ref. No. 17) at rear of blade by loosening
set screw (Ref. No. 15).
• Position thrust bearing .002˝ away from back of blade.
• Secure position of thrust bearing by tightening set screw.
• Adjust the height of upper guide casting to clear the workpiece
by 1/4˝. Loosen knob (Ref. No. 30) and rotate height adjustment
knob (Ref. No. 22) until upper blade guide bracket clears work-
piece by 1/4˝. Tighten knob.
