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Model G0790 (Mfd. Since 9/15)
-31-
Replacing Motor
Brushes
The cutterhead is driven by a belt that is located
on the right-hand side of the motor and cutterhead
assembly (when facing the front of the machine).
The belt is very durable, but with extended use it
may begin to stretch and slip, indicating the need
for tightening or replacement.
Tools Needed Qty
Hex Wrench 4mm .............................................. 1
Hex Wrench 5mm .............................................. 1
Phillips Head Screwdriver #2 ............................ 1
To replace belt:
1. DISCONNECT MACHINE FROM POWER!
2. Slide dust port off fan housing.
3. Remove (5) M5-.8 x 15 tap screws that
secure fan housing cover (see Figure 32).
4. Remove M6-1 x 12 button head cap screw
that attaches fan to shaft. This screw has left-
hand threads; rotate right to loosen or left to
tighten. Slide fan off shaft.
5. Remove (5) M6-1 x 12 Phillips head screws
(see Figure 32) to remove fan housing and
expose V-belt.
Replacing &
Tensioning V-Belt
This motor is equipped with two long-life carbon
brushes. However, brush life expectancy is affect-
ed by motor loading. Regularly planing very wide,
dense boards or cutting too deeply will reduce
brush life.
Check brushes if motor loses power or becomes
noisy. Replace the carbon brushes when the motor
no longer reaches full power or if brushes mea-
sure less than
1
⁄4" long (new brushes are
5
⁄8" long).
Figure 31. Brush holder location. A second
brush is located on other side of motor.
Tools Needed Qty
Flat Head Screwdriver #2 .................................. 1
To replace motor brushes:
1. DISCONNECT MACHINE FROM POWER!
2. Unscrew brush cap and carefully remove
brush from motor (see Figure 31).
3. Install new brush and re-install brush cap.
4. Repeat Steps 2–3 to replace motor brush on
opposite side of motor housing.
Figure 32. Hardware attaching fan housing.
Fan
Housing
Fan
Cover
Dust Port