Headstock Spindle Lock; Headstock Rotation; Headstock Spindle Index - Jet JWL-1640EVS Operating Instructions Manual

7.2 Headstock spindle lock

Push spindle lock pin (P, Figure 27) and rotate spindle
slightly until pin engages. Slide plate downward to hold pin
in locking position.
Release spindle lock by pushing plate upward.
Caution:
Never press the spindle lock while the spindle is turning!

7.3 Headstock Rotation

IMPORTANT: Remove anti-rotation block (Figure 28) with
4mm hex key before attempting to rotate headstock.
To rotate headstock:
Loosen lock handle (A, Figure 28-1).
Unscrew knurled knob (B) counterclockwise until it can be
pulled outward.
Pull knob (B) outward and rotate headstock to desired
position. The headstock has seven positive locking
positions. NOTE: Be careful not to pinch your fingers
against the bed as you rotate headstock.
Release knob (B) and it will seat itself with an audible click
when the headstock reaches a positive lock position.
Lift handle (A) to lock headstock.
Rotate knob (B) clockwise until it engages the threads.
Unscrew the index plunger (B, Fig 28) counter clockwise.
Fig 27
Figure 28
Loosen the headstock lock handle (A) and pull the index
plunger (B) to turn the headstock.
For larger workpieces the head stock will have to be turned
90°, the extension added to the tool rest.
Caution: always operate lathe with the headstock locked in
position.
The headstock can be positioned anywhere along the
machine bed.

7.4 Headstock spindle index

Indexing is used to create evenly spaced features in a
workpiece, while keeping the lathe spindle locked; for
example, when cutting flutes on a spindle blank with a
hand-held router, while the spindle blank is secured
between lathe centers.
The JWL-1640EVS lathe provides 36 indexing positions at
10-degree increments.
Rotate spindle using handwheel until index pin (L, Figure
29) aligns with desired hole.
Screw index pin into hole until it engages spindle.
Perform desired procedure.
Unscrew index pin until spindle is released. Rotate spindle
to next desired hole, and repeat.
Disengage index pin before starting lathe.
IMPORTANT: Do not use index pin to lock spindle, which
will cause unnecessary wear to the pin. Use spindle lock
for this purpose.
Fig 28-1
Fig 29