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13
gained, the operator should develop a better
“feel” for how tight to set a particular blade. Tick
marks can be made on the tension knob for
quickly resetting tension when re-installing a
blade.
7.10 Blade tracking
Blade tracking adjustment
requires running saw with back cover open. Use
caution when making this adjustment. Failure to
comply may cause serious injury.
Blade tracking has been set by the manufacturer
and should not require adjustment. When the blade
is replaced, tracking may be required for the new
blade.
1. Confirm that blade tension is set properly. To
adjust, see sect. 7.9.
2. Raise bow and prop in position. Remove back
blade cover.
While performing the
following steps, keep blade from rubbing
excessively on wheel flange. Excessive
rubbing will damage wheel and/or blade.
3. Run saw at low speed and observe blade.
Blade should run next to but not tightly against
wheel flange.
4. Loosen bolts (L, Figure 7-6) with 12mm wrench.
5. Turn set screw (N, Figure 7-6) with 4mm hex
wrench, while observing blade tracking on
wheel. Turn set screw clockwise to track closer
to wheel flange, 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.
6. Once tracking is set, tighten bolts (L).
7. Make any final adjustments to blade tension
(sect. 7.9).
7.11 Blade guide adjustments
7.11.1 Guide assemblies
The left blade guide assembly should be moved as
close to workpiece as possible without interfering
with cutting operation. This allows minimal blade
exposure. To adjust, loosen handle (A, Figure 18)
and slide assembly into position. Tighten handle (A)
after adjustment.
The right blade guide assembly has been properly
positioned to clear the cutting area. If future
adjustment is needed, loosen bolt (B, Figure 18).
Figure 7-6
Figure 7-7
7.11.2 Blade guide bearings
The blade guide bearings come pre-adjusted from
the manufacturer, but should be inspected
frequently and adjustments made as needed,
especially after changing blades.
The blade should have already been tensioned and
tracked properly before adjusting the blade guides.
1. Disconnect band saw from power source.
2. Loosen bolt (P
1
, Figure 7-7) and adjust
assembly so that rear bearing (P
2
) is slightly set
back from back edge of blade. Also, inside
bearing (P
3
) should very lightly contact blade.
Tighten bolt (P
1
).
3. Inside bearing (P
3
) is fixed. Outside bearing (P
4
)
rotates on an eccentric shaft. Loosen top nut
(P
5
) and rotate bottom nut (P
6
) to adjust
eccentric bearing to very slight distance away
from blade.
4. Hold bottom nut (P
6
) to prevent it turning further,
and tighten top nut (P
5
).
5. Repeat above steps for opposite blade guide
assembly.
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