Adjusting The Height Adjustable Back; Adjusting The Angle Adjustable Backrest - Invacare Action 4 NG Heavy Duty Service Manual

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Adjusting the Height Adjustable Back

NOTE: For this procedure, refer to FIGURE 4.5.
1. Loosen, but DO NOT remove, the height adjustment knobs.
2. Reposition the back canes to the desired height.
NOTE: Both back canes should be adjusted to the same height.
NOTE: DO NOT raise push handles to maximum height when tilting the chair.
3. Tighten the height adjustment knobs.
NOTE: To prevent accidental removal of a back cane, the spring button lock will engage
at the full extension of the back cane. To disengage the button, press the button located
below the height adjustment, under the upholstery, on the back cane (Detail "A").
Back
cane
Height Adjustment
Knob
FIGURE 4.5 Adjusting the Height Adjustable Backrest cane

Adjusting the Angle Adjustable Backrest

NOTE: For this procedure, refer to FIGURE 4.6, next page.
NOTE: This procedure applies to adjustable angle backs only (refer to detail "A").
NOTE: The backrest angle adjusts from
1. Adjust the back angle thanks to the adjustable screw "A".
2. Turn Allen key (5 mm) clockwise to obtain a negative angle.
3. Alternatively, turn Allen key (5 mm) under clockwise to obtain a positive angle.
4. Ensure both adjustment to the desired angle is equal on each side of the
Back Cane Bracket. Refer to Detail "B" of FIGURE 4.6
NOTE: Both backrest angle should be set to the same position.
Backrest
Upholstery
15° to +15° (step less).
-
D E T A I L " A " - S N A P
1 9
SECTION 4—SEAT/BACK
B U T T O N L O C K
Location of Snap
button lock
(under Upholstery)

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