Use and Care Manual

12
8.3 Drive belt tension/replacement
1. Disconnect band saw from power source.
2. Open pulley cover, and loosen hex nuts (K,
Figure 8-5). Turn screw (L) out to relieve
pressure on motor mount plate.
3. Turn screws (M) clockwise to push motor mount
plate, relieving tension on belt.
Figure 8-5: belt tension/replacement
4. Remove old belt and install new belt into pulley
grooves.
5. Tension belt by backing off screws (M) with
12mm wrench. Slide motor back into position.
Finger pressure on belt between the pulleys
should cause approximately 1/2-inch deflection.
Do not overtighten belt.
6. Tighten hex nuts (K) and turn screw (L) to
tighten motor mount plate.
7. Close pulley cover.
8.4 Blade guides
1. Disconnect band saw from power source.
2. Loosen knob (N, Figure 8-7) and slide blade
guide assembly (O) as close as possible
without interference to material being cut.
Tighten knob.
Figure 8-7: blade guide adjustment
8.5 Blade replacement
A general-use variable-tooth blade is provided with
this band saw.
Choice of blade pitch is governed by thickness of
workpiece: the thinner the workpiece, the more
teeth advised. A minimum of 3 teeth should engage
workpiece at all times. If blade teeth are so far apart
that they straddle the work, severe damage to
workpiece and blade can result.
1. Disconnect machine from power source.
2. Raise bow to vertical position.
3. Open rear guard by removing two knobs (see
Figure 8-10).
4. Remove red guard from upper blade guide by
removing two screws.
It is essential that red blade
guard be installed after new blade has been
fitted. Failure to comply may cause serious
injury.
5. Release tension on blade by turning tension
handle (P, Figure 8-7) counterclockwise.
Remove blade. (Use gloves when handling
sharp blades).
6. Install new blade between blade guide
assemblies and around each wheel. Make sure
blade teeth are pointing in proper direction. See
Figure 8-8.
7. Increase blade tension just enough to hold
blade on wheels. Make sure back of blade rests
lightly against shoulder of both wheels. Twist
blade slightly to allow it to slip into guides.
Figure 8-8
8. Install red blade guard with screws.
9. Tension blade fully (see sect. 8.8 Blade
tension.)
10. Place two to three drops of lightweight oil on
blade.
11. Adjust blade guide bearings (see sect. 8.6
Blade guide bearings).
12. Connect machine to power source.