Sunrise Medical S-646 SE instruction manual Backrest, Seat Depth, Wheel Locks, Suspension

32	I X . S e t - u p , A d j u s t m e n t & U s e
L. BACKREST
A backrest angle-adjustment is standard on the Trax
Seat Frame.
1. Adjustment on Trax Seat Frame
a)	Remove the securing bolt (A) on the sides of
	the backrest hinge plate.
b)	Set at desired angle. There are ten holes (in 4º
	increments) to choose from.	A
c)	Reinstall the front bolt and tighten both bolts
	securely.

M. SEAT DEPTH

The seat depth can be adjusted continuously along the seat rail.

1. Seat Frame Depth Adjustment		loosen all 4
a)	To adjust, loosen the four bolts (B) from each
		B move back
	side of the backrest pivot plate.
b)	Reposition the backrest to the desired position.	or forward

c)Retighten bolts on each side of the backrest pivot plate.

I X . S e t - u p , A d j u s t m e n t & U s e		33
O. WHEEL LOCKS
Wheel locks are installed by Sunrise when requested on
the Quickie S-646/S-646 SE.
1. Mounting
The wheel lock mounts to the motor mount.
Use a torque setting of 100 in./lbs when adjusting		D
wheel locks.
a)	Loosen bolts (D).
b)	Slide mounting bracket toward rear wheel until
	clamp embeds into tire to prevent wheel move-
	ment when in locked position.
c)	Tighten screws.

NOTE– Wheel lock adjustment will be done through the drive-wheel spokes.

P. SUSPENSION

Note– Equivalent adjustments should be done to both the right and left suspension element.

It is important to properly adjust the pre-load and damp- ing to ensure proper comfort and control for the rider.

N. SEAT HEIGHT AND ANGLE ADJUSTMENT

Adjusting the seat height can be done both at the front and the rear of the seat. Seat angle can also be varied through front and rear seat height adjustments.

1. Front Seat Height Adjustment.
a)	Remove bolt (A) in the seat height strut (B).
	Adjust the upper and lower tube until the
	desired front seat height is achieved. Each
	upper hole is 1" apart. Each lower hole is 1/2"
	apart. This allows 1/2" seat height increments.
b)	Replace the bolt and secure the locknut.

B A

F

1. Pre-Load Adjustment

With the rider seated in the chair and with batteries installed, insure that the main horizontal member of the base frame is parallel to the ground. If it is not parallel, adjust spring collar (B) in either direction to adjust. If the rear of the base frame is lower than the front, adjust the spring collar clockwise when viewed from the rear of the chair. If the rear of the base frame is higher than the front, adjust the spring collar counter-clockwise when viewed from the rear of the chair.

C

B

2. Rear Seat Height Adjustment
a)	Remove bolt (C).
b)	Loosen bolt (D), but do not remove.
c)	Adjust seat height to match one of three posi-
	tioning holes (G). Each hole is 1" apart.
d)	Refasten bolt (C) and retighten bolt (D).
e)	To achieve 1/2" increments adjust position bolt
	(E) to either hole (F) and refasten.

E

G

C

D

The spring pre-load ring should never be adjusted so that the shock spring is less than four inches long with the chair unoccupied and the batteries installed. Too much spring pre- load may cause the spring to fail.

930477 Rev. A 930477 Rev. A