12
4. Hold bottom nut (L
2
) to prevent it turning further,
and retighten top nut (L
1
).
5. Repeat above steps for opposite blade guide
assembly.
7.7 Blade tracking
Blade tracking adjustment
requires running saw with back cover open. This
adjustment must be completed by qualified
persons only. Failure to comply may cause
serious injury.
Blade tracking has been set by the manufacturer
and should not need immediate adjustment. If blade
tracking should ever require adjustment:
1. Confirm that blade tension is set properly. To
adjust, see sect. 7.4, Blade tension.
2. Set saw to lowest speed (sect. 7.2).
3. Raise bow to vertical position and secure in
place with support (R, Figure 7).
4. Confirm that blade tension is set properly. To
adjust, see sect. 7.4, Blade tension.
5. Open blade cover.
6. Run saw and observe blade. Blade should run
next to but not tightly against wheel flange.
7. Loosen bolts (M, Figure 18) with 12mm wrench.
8. Turn set screw (N) with 4mm hex key, while
observing blade tracking on wheel. Turn set
screw clockwise to track closer to wheel flange.
Turn set screw counterclockwise to track away
from wheel flange. NOTE: This adjustment is
sensitive; start with 1/4 turns on the set screw
and allow blade to respond to changes.
9. Once tracking is set, tighten bolts (M).
Figure 18
7.8 Feed pressure adjustment
Turn handle (O, Figure 19) clockwise to decrease
feed pressure; counterclockwise to increase feed
pressure.
A good indication of proper feed pressure is the
color and shape of the cutting chips. If the chips are
thin or powdered, increase feed pressure. If the
chips are burned and heavy, decrease feed
pressure. If they are still burned and heavy, reduce
blade speed. Optimum feed pressure has been set
when the chips are curled, silvery, and warm.
Figure 19
7.9 Blade-to-table squareness
The blade must be perpendicular to table to ensure
a straight cut. This setting should be checked.
Special blade setting gauges can be purchased for
this type of inspection; however, it can also be done
using more common shop items, as follows.
1. “Extend” the surface of blade by clamping a
straight, flat object to blade. (Figure 20 uses a
small, lightweight aluminum ruler.) Use a
lightweight clamp.
Figure 20
2. Place a square on table and against ruler. The
square should lie flat against ruler without a
gap.
3. If there is a gap, loosen bolt (H, Figure 17) on
each blade guide assembly and rotate blade
guide assembly until gap is eliminated between
square and ruler.
4. Retighten bolts (H, Figure 17).
O
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