Sharp 1118H Operations Manual & Parts List page 18

Set Inch/Metric knob "D" (Figure 36), so thread system to be cut reads at top of knob, If
the sliding gear does not engage properly to bring desired system to read at top, loosen
knob "B" (Figure 36), OPEN GEARBOX DOOR AND ROATE GEAR "T" (Figure 37), until
gears mesh and knob is felt to engage detent.
Engage gearbox by turning knob "E" (Figure 36), counterclockwise in the direction of
arrow marked "THREAD" When turning knob "E" (Figure 36) ＜THE TEETH OF THE
SLIDING GEAR WITHIN THE GEARBOX.＞ May not mesh with the headstock spindle
gear teeth. If this is the case, turn headstock spindle with handwheel "F" (Figure 36) while
turning knob "E" (Figure 36) to left until definite click is heard.
Set compound slide at 61 and position cutting tool in compound slide tool post.
Position carriage with handwheel so threading tool is in the center of the part to be
threaded.
Carriage control lever "G" (Figure 36), when moved to the left, will cause carriage to
move to the left. When the carriage control level is moved to the right, the carriage will
move to the right. Carriage travel can be stopped at any time by placing control lever "G"
(Figure 36) in center position.
NOTE： ： ： ： Carriage power feed unit is not used during threading operation.
F
B
Figure 36-Headstock and Gearbox
∘
E
G
A
Figure 37-Thread Gearbox
16
T