Arm Bearings; Motor Brushes - Craftsman 21609 - 18 in. Scroll Saw Operator's Manual

ARM BEARINGS
See Figure 18.
Lubricate the arm bearings after the first 10 hours of use.
Oil after every 50 hours of use or whenever there is a
squeak coming from the bearings.
[] Carefully place the saw on its side as shown.
[] Remove the rubber cap from the upper and the lower
arm of the saw.
[] Squirt a few drops of SAE20 oi! around the shaft end
and arm bearings. Let oi! soak in overnight, remaining
in this position.
NOTE: Lubricate the bearings on the other side of the saw
in this same manner.
MOTOR BRUSHES
See Figure 19.
The saw has externally accessible motor brush assem-
blies that should be checked periodically for wear. When
either one of the two brushes becomes worn, replace
both brushes.
[] Unplug the saw from the power source.
[] Carefully place the saw on its side, exposing the under-
side of the saw housing.
[] Using a flat blade screwdriver, remove the bottom
brush assembly cap through the access hole in the
base and the top brush assembly cap from the top of
the motor.
[] Gently pry the brush assemblies out using a small
screwdriver, point of a nail, or paper clip.
[] If one motor brush is worn down shorter than 1/4 in.,
replace both motor brushes. Do not replace one side
without replacing the other.
NOTE: Ensure curvature of brush matches curvature
of motor, and that motor brush moves freely in brush
tube. Use the blunt end of something thin (eraser end
of pencil, etc.) to push the motor brush into the tube
until it stays.
[] Ensure the motor brush cap is oriented correctly
(straight), then tighten motor brush cap using a hand
powered screwdriver only. Do not overtighten.
o
[V_0TOR
BRUSH
_ gFWSH
CAP
Fig. 19
21