Jet JRD-387A Mode D'emploi page 8

Tension the belt .
Close and lock the pulley cover with the locking screw.
Tension the belt with the tension lever (C, Fig 7).
Loosen the lock nut and adjust the belt tension with the screw
(P).
Belts are properly tensioned when finger and thumb pressure
midway between the two pulleys causes approximately 10
mm deflection.
Tighten the lock nut.
Disconnect the machine from the power source (unplug).
The return spring is adjusted at the factory and should not
need further adjustment.
If adjustment is necessary:
P
B
C
JRD-387A
Loosen the lock nut (A, Fig 8) approximately 6mm (do not
remove).
Firmly hold the coil spring cover (B).
Pull out the cover and rotate until the pin (C) engages the
next notch in the coil spring cover. Turn the cover clockwise
to decrease tension and counter-clockwise to increase
tension.
Tighten the lock nut (A). Do not over-tighten. Nut should not
contact the housing when tight.
Periodically lubricate gently with grease.
-the drive splines (grooves) in the spindle
-the teeth of the quill
-the column-rack
Clean the machine regularly.
Defective safety devices must be replaced immediately.
Repair and maintenance work on the electrical system may
only be carried out by a qualified electrician.
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
*Oil or grease on contact surfaces-
clean the tapered surfaces of chuck and spindle.
Incorrect belt tension-
Adjust belt tension.