12
Upper Blade Guide Positioning Referring to Figure 11:
The upper blade guide assembly (C) should be
adjusted to just above the material being cut. To
adjust:
Loosen lock knob (B) and raise or lower the upper
blade guide assembly (C) by turning the height
adjustment knob (A).
Overview
The blade guide assembly consists of two roller
guides (bearings) positioned on each side of the
blade to provide blade stability. A third guide (thrust
bearing) is positioned behind the blade to provide
blade support.
There are two blade guide assemblies – an upper
assembly and lower assembly (see Figure 12).
Adjustments are performed in the same manner for
each assembly. Each assembly must be adjusted
in turn using the adjustment procedures outlined
below.
Thrust Bearing Adjustment
Disconnect machine from the
power source! Never make adjustments with
the machine running! Failure to comply may
cause serious injury!
Referring to Figure 12:
1. Disconnect machine from power source.
Note: Blade must already be tensioned and tr ack-
ing properly (Adjusting Blade Tension, page 10).
2. For the upper thrust bearing, loosen thumb-
screw (B). For the lower blade guide, loosen
setscrew (B) with the 3mm hex wrench
provided.
3. Slide the adjustment shaft (C) so the blade is
positioned in the middle of the thrust
bearing (A).
The thrust bearing (A) is mounted on a concentric
shaft (C). W hen the shaft is rotated, the rel ative
position of the bearing to the back of the blade can
be changed.
4. Rotate the adjustment shaft (C) so the thrust
bearing (A) just clears the back of the saw blade.
5. Tighten thumbscrew/setscrew (B).
If a blade is being replaced with a new one of a
different size, the adjustment described above may
fall out of range and further adjustment may be
required as follows:
Figure 11
Figure 12