Invacare RWD, MWD, Arrow FWD service manual Adjusting Weight Distribution For New Seat Depth

Models: Arrow FWD RWD MWD

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FWD WHEELCHAIRS

PROCEDURE 17

ADJUSTING WEIGHT DISTRIBUTION (FIGURE 13)

NOTE:Depending on the seat depth ordered, theposition oftheseatsupportbracketsisfactoryset between 2.25 and 6 inches (measured from the front of the base frame to the frontoftheseatsupportbrackets).Thiswillputapproximately 65% of the total weight of the chair and user over the drive wheels(large wheels), allowing for the best performance of the chair.

In order to achieve maximum comfort and maneuverability for the end user, it may be necessary to adjust the seat support brackets slightly forward or backward. It is recom- mended that the seat support brackets be set as close to

2.25- 6 inch mark (depending on seat depth) as possible, while allowing maximum comfort and maneuverability to the end user.

Adjusting Weight Distribution For New Seat Depth

NOTE: When changing the seat depth of the chair, it is necessary to adjust the seat support brackets in order to achieve optimum weight distribution (65%). Perform the following procedure to adjust the seat brackets:

1.Refer to the following chart to determine the correct position of the two (2) seat support brackets to achieve optimum weight distribution (65%).

Seat

Position Of The Seat Support

Depth

Brackets (Inches) To Achieve

(Inches)

Optimum Weight Distribution (65%)

 

 

14 to 16 inches

2.25-inches

 

 

17 to 18 inches

4.25-inches

 

 

19 to 20 inches

6-inches

 

 

2.Loosen the four (4) mounting screws that secure the two (2) seat support brackets to the base frame.

3.Adjust the two (2) seat support brackets forward or backward until the position determined in STEP 1 is achieved.

NOTE: When the front of the seat aligns with the controller, approximately65%ofthetotalweightofthechairanduseris overthedrive wheels (largewheels).

4.Adjust the two (2) seat brackets slightly forward or backward, until maximum comfort and maneuver- ability for the end user is acheived.

5.Retighten the four (4) mounting screws securing the two (2) seat support brackets to the base frame.

Mounting Screws

Seat Support

Brackets

Front Of

Base

Frame

2.25Inches (For a seat depth of 14 to

16 inches)

NOTE: Seat/seat frame not shown for clarity.

FIGURE 13 - ADJUSTING WEIGHT

DISTRIBUTION

INSTALLING 90o FOOTBOARD (FIGURE 14)

WARNING

DO NOT remove detent pin from footrest assembly. Otherwise, injury may result.

1.Remove the existing footrests. Refer to FRONT RIG- GINGS in PROCEDURE 3 of the Owner’s manual, part number 1081227.

2.Remove the telescoping front rigging supports. Refer to ADJUSTING/REPLACING TELESCOPING FRONT RIGGING SUPPORT in PROCEDURE 3 of the Owner’s Manual, part number 1081227.

3.Remove existing front and rear shrouds. Refer to RE- MOVING/INSTALLING THE REAR SHROUD and REMOVING/INSTALLINGTHEFRONTSHROUDin this procedure of the Manual.

4.Remove the seat. Refer to REMOVING/INSTALLING THESEATFRAMEinPROCEDURE6ofthisManual.

5.Positionthe90o footboardonthebaseframeasshown in FIGURE 14.

6.Loosely install one (1) mounting screw into the back of the footboard and into the base frame.

7.Loosely install two (2) mounting screws and washers throughthetopofthefootboardandintothebaseframe.

8.Torque all three (3) mounting screw between 15 and 19-foot pounds.

F

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W H E E L C H A I R S

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Invacare RWD, MWD Adjusting Weight Distribution For New Seat Depth, 14 to 16 inches Inches 17 to 18 inches 19 to 20 inches