(2)
Inspect the seat assembly to ensure the following conditions exist.
(a) The adjustable brackets are operational.
(b) The head rest adjusts throughout its range of motion.
(c)
The dowel pins and chains are not broken or missing.
(d) The seat and the back rest are not splintered or broken.
(3) Inspect the scissors arm assembly spring adjustment. Position the tube
head in a 45 angle to the vertical scissors arm. If the scissors arm does not return by
itself to 45, the friction pad requires adjustment. See figure 1-3. Use the following
(a) Loosen the locking screws (A) for the spring-arm adjustment
screws in the pivoting arm by turning them (1 1/2 turns maximum).
(b) Remove the screw caps (B) from the double joint of the scissors
arm. See figure 1-4.
(c) Adjust the spring with screw C if the angle is more than 45. See
figures 1-4, 1-5, and 1-6.
(d) Adjust the spring with screw D if the angle is less than 45. See
figures 1-4, 1-5, and 1-6.
(e) Tighten screw A by turning it (1 1/2 turns maximum). See
figure 1-3.
MD0361
1-8