Craftsman 351.214140 Operator's Manual page 6

5 x 6" band saw with stand
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SAFETY
PRECAUTIONS
WARNING:
Always observe the following safety pre-
cautions.
.
Whenever adjusting or replacing any parts on the
band saw turn, switch off and remove plug from
power source.
.
Make sure the stops are positioned and that the
automatic shut-off is operating.
.
Check that the gear box has the proper amount of
lubricant.
.
Make sure the blade guides are positioned correctly.
.
Use the appropriate blade for the workpiece that is
being cut.
.
Use a sharp blade. Replace dull blades or blades
which are missing teeth.
.
Make sure the blade is tensioned properly and going
in the right direction.
.
Use the proper blade speed for the work.
.
For optimum performance, do not stall the motor or
reduce the speed. Use the proper feed pressure.
.
Secure the workpiece in a stable position.
.
Check that all guards are attached.
.
After turning the switch on, let the blade come to full
speed. Then lower the blade onto the workpiece slowly.
.
Keep hands away from the blade and all moving parts.
.
Always wear eye protection or face shield.
HORIZONTAL
STOP
Refer to Figure 15, page 14.
Horizontal stop bolt (Key No. 33) controls the position of
the head at the end of the cut. Head should contact the
horizontal stop when teeth are 1/8"below the surface of
the workbed.
HORIZONTAL
STOP ADJUSTMENT
Refer to Figure 15, page 14.
Place head in the horizontal position.
Loosen the nuts (Key No. 35) on the horizontal stop
bolt. Adjust the horizontal stop bolt so that the teeth
are 1_,,below the surface of the workbed.
Tighten the nuts to lock the position.
AUTOMATIC
SHUTOFF
The switch is shut off when the blade passes through
the plane of the workbed. The switch should be shut off
as soon as the cut is finished.
IMPORTANT: Make sure the action of the switch is not
restricted by the horizontal stop.
LUBRICATION
Refer to Figure 16, page 16.
.
All ball bearings are permanently lubricated and
should not require further lubrication.
.
If the tracking wheel or head pivot is disassembled
for any reason, wipe off the old and reapply new
grease before assembly.
.
The drive gears run in an oil bath and will not require
a lubricant change more often than once a year,
unless the lubricant is accidently contaminated or a
leak occurs because of improper replacement of the
gear box cover. During the first few days of opera-
tion, the worm gear drive will run hot. Unless the
temperature
exceeds 200 ° F, there is no cause for
alarm.
.
Under normal operation, gearbox oil should be
replaced once a year.
.
The gearbox is designed to take 6 ounces of Mobil
630 gear oil.
.
To replace gearbox oil:
1. Remove gearbox cover and drain old oil (there is
no oil plug)
2. Pour 6 ounces of fresh Mobil 630 gear oil in the
gearbox.
3. Install new gasket.
4. Install gearbox cover and fully tighten all bolts.
.
The seal between the gearbox and the cover plate is
a gasket (Key No. 29). If cover plate is removed, the
surface should be cleaned and a new gasket should
be applied.
BLADE
GUIDES
Band saw blade has to be twisted relative to the plane
in which it rotates. Blade must be properly positioned
relative to the workbed.
Blade guides hold the cutting portion of the blade in a
plane which is perpendicular
to both the workbed and
the stationary vise and keep the blade in line with its
natural path around the blade wheels.
Inner guide bearings on the upper and lower guide assem-
blies keep the blade in line with the blade wheels. Outer
guide bearings keep the blade against the inner bearings.
Entire guide assembly is positioned at the factory to
produce the proper twist and should not need adjust-
ment, however, the position of blade guides should be
checked often.
NOTE: Since the blade position is related to both table
and the vise jaws, the relative position of the jaw to the
table is important. When assembled, the stationary jaw
must be perpendicular to the surface of the workbed.
CHECKING
BLADE GUIDES
Refer to Figure 16, pages 16.
.
Check that the blade teeth are perpendicular to the
machined surface of the base.
.
Spread the blade guides as far apart as possible.
.
Check that vise jaws are parallel and set for 90 ° cutoff.
.
Position the vise jaws to have the maximum separa-
tion that will not interfere with the blade guides.
.
With the head in horizontal position, use a square
against face of rear vise jaw and check that jaw is
90 ° to the side of blade.
.
Check that the blade is in line with tracking and drive
wheels (Key Nos. 11 and 50).
.
Raise the head.
6

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