Jet HBS-916W, Operating Instructions And Parts Manual

Page: 11 / 32

11
Adjusting Feed Rate
Rate of feed is adjusted by turning the cutting
pressure control knob on the control panel. Rate
of feed is important to band saw performance;
excessive pressure may break the blade or stall
the saw. Insufficient pressure rapidly dulls the
blade.
Material chips or shavings are the best indicator
of proper speed and pressure. The ideal chip is
thin, tightly curled, and warm to the touch. Chips
that range from golden brown to black indicate
excessive force. Blue chips indicate extreme
heat from too high a band speed which will
shorten blade life. Thin or powdered chips
indicate insufficient feed pressure.
A detailed explanation on feed rate can be found
in the enclosed “Guide to Band Sawing”
published by American Saw and Manufacturing
Company. Reprinted by permission.
Changing Blades
Disconnect machine from
power source before making any
adjustments or repairs. Failure to comply
may result in serious injury.
1. Disconnect machine from power source.
2. Raise saw arm approximately 6 inches.
Hold saw arm in place by closing cutting
pressure control valve. Remove screw
(#145, page 17 or 18), washer (#146), and
brush (#147) from the wire brush post
(#148).
3. Open both wheel covers and clean chips out
of both wheel housings. Loosen two lock
knobs and remove upper blade guard.
4. Release blade tension by turning blade
tensioning handwheel (A, Figure 7) counter-
clockwise until blade is free.
5. Loosen lock knob and slide left blade guide
arm (B) to the right as far as possible.
6. Remove old blade from both wheels and out
of each blade guide. CAUTION: Even dull
blades are sharp to the skin! Use extra
caution handling band saw blades!
7. Install new blade making sure teeth are
pointed downward in the proper cutting
direction. If necessary, turn blade inside out.
8. Position blade on band wheels and tighten
just enough to hold blade on wheels. Make
sure back of blade rests lightly against the
wheel flange of both wheels. Twist blade
slightly to allow it to slip into guides.
Figure 7