Delta SS350LS User Manual

Page 11

ADJUSTINg BLADE TENSION

Disconnect machine from power source.

Tension is applied to the blade when the blade tension lever

(A) Fig. 7, has been adjusted and is in the vertical position

as shown. When the blade tension lever (A) is moved to

the horizontal position, as shown in Fig. 8, blade tension is

released.
To adjust blade tension, position lever (A) in the vertical

position, as shown in Fig. 7. To increase tension, turn

lever (A) clockwise and to decrease tension turn lever (A)

counterclockwise. When adjusting tension, turn lever one-

quarter of a turn at a time.

NOTE: It is necessary to adjust the

blade tension only when the blade is removed from both the

upper and lower blade holders and a new or different type

of blade is used. It is not necessary to adjust blade tension

when the blade is removed and replaced in only the upper

blade holder as in performing inside cutting operations. After

desired tension is obtained, position tension lever (A) in the

horizontal position, as shown in Fig. 7.
Adjusting the blade for proper tension is usually

accomplished by trial and error. One method is to pull back

on the blade tension lever (A) Fig. 8, the blade should start to

have tension (resistance) when the blade tension lever is half

way between open Fig. 8, and closed Fig. 7 positions. Finer

blades require more tensioning while thicker blades require

less tension.

ADJUSTINg CLAMPINg ACTION OF UPPER

AND LOWER BLADE HOLDER CHUCk

Disconnect machine from power source.

Different widths of scroll saw blades will make it necessary

to adjust the clamping action of the upper and lower

blade holders. It should be noted, however, that very little

adjustment is necessary and very little clamping force is

required to hold the blade satisfactorily. As a rule of thumb,

looking down at the table with the table insert slot in the

6 o’clock position, resistance on the blade locking lever

should be felt when the upper blade locking lever reaches

the 7 o’clock position, or when the lower blade locking lever

reaches the 5 o’clock position.
1. Move the blade locking lever (A) Fig. 9, to the rear (open)

position, as shown.

2. Turn chuck clamping knob (B) Fig. 9, clockwise to tighten

and counterclockwise to loosen the clamping action of

the blade holder chuck. Very little movement of knob (B)

will be necessary.

NOTE: Only the upper chuck is shown.

Clamping action of the lower chuck is adjusted in the

same manner and can be accessed by removing dust

cup shown in Fig. 24.

Fig. 7

Fig. 8

Fig. 9