Blade Guide Adjustment; Thrust Bearing Adjustment - Jet JWBS-10 Operating Instructions Manual

Loosen lock knob (V) and raise or lower upper blade guide
assembly (W) by turning height adjustment knob (X).

7.4 Blade guide adjustment

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 (Figure 25) and lower assembly (Figure 26).
Adjustments are performed in the same manner for each
assembly. Each assembly must be adjusted in turn using
the adjustment procedures outlined below.

7.5 Thrust bearing adjustment

Refer to Figures 25 and 26:
Note: Blade must already be tensioned and track-ing
properly.
Disconnect machine from power source.
For the upper thrust bearing, loosen thumb-screw (A,
Figure 25). For the lower blade guide, loosen setscrew
(A, Figure 26) with the 3mm hex wrench provided.
Slide the adjustment shaft (C) so the blade is positioned
in the middle of the thrust bearing (D).
Fig. 24
Fig. 25: upper blade guides
Fig. 26: lower blade guides
The thrust bearing (D) is mounted on a concentric shaft
(C). When the shaft is rotated, the relative position of the
bearing to the back of the blade can be changed.
Rotate the adjustment shaft (C) so the thrust bearing (D)
just clears the back of the saw blade.
Tighten thumbscrew/setscrew (A).
NOTE: 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:
Loosen the socket head screw (E, not visible) with a
10mm wrench and adjust the entire assembly back or
forth to just clear the back of the saw blade. Tighten
screw (E), then fine tune the adjustment by repeating the
first part of this step.
Secure the thrust bearing (D) by tightening the
thumbscrew (A, upper guide) or setscrew (A, lower
guide).
Guide bearing adjustment
Refer to Figures 25 and 26:
Note: Blade must already be tensioned and track-ing
properly .
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