Adjustable seat back rascal 300, bought used without book

Request the manual directly from Rascal.

https://www.youtube.com/watch?v=FqTE7h5zJAA
Below might be easier than measuring of blade.
https://www.youtube.com/watch?v=YChJqEJUPss
https://www.youtube.com/watch?v=-AgOJrp5sNE
https://www.youtube.com/watch?v=MlsF_OQv3qQ


https://www.youtube.com/watch?v=ig7mES1mrH8
https://www.youtube.com/watch?v=JG__wlitH_I

I had a similar problem on my Pride Legend scooter, it would
creep back in reverse if you let go of the throttle. The FWD/REV spring tensioned throttle pot inside was "off center"causing it to activate in reverse when it should have stayed put with the electric brake energized.
I had to replace the throttle pot assembly. Not sure if yours
is similar, but I would suspect it might be.

The Rascal 600/300, remove the seat, lift off the cover, unplug a battery, replace the old battery with a new one, putting the cable connections on the same way, red is +, black is -. Do the same with the next battery, reconnect the anderson plugs,reinstall the cover and seat and plug in the charger with the key on watch to see the needle raises up toward the full mark, allow to charge fully, overnight is good. keep the bats charged up not allowing them to drop below half way for the first 20 charges to break in the batteries. as a rule charge the scooter after every use!
Scooter Doctor App

I’m happy to assist further over the phone at https://www.6ya.com/expert/bill_bcbb89783b08c489

This link will take you to the webpage for the pioneer.
http://www.meritshealth.com/02_products/products_list_details.php?MID=6&ID=174
The pdf manual for the s131 is at http://www.meritshealth.com/upfiles/profile01339770044.pdf
You want page 17.

I have a Pride Victory XL and the back of the seat is not adjustable. Call the manufacturer or check your book for help.

On W-Body vehicles, the front seats are secured to the floorpan by two front hook attachments and two rear bolts installed to nuts welded to the floorpan.
The manually operated two-way front adjusters provides only fore and aft movement of the seat. When the seat adjuster handle located on the front seat is pulled up, the seat adjusters unlock, permitting travel of the seat. When the seat is in the desired position and the seat adjuster handle is released, the seat locks in place.
A power operated six-way seat adjuster is available. The adjusters are activated by three 12 volt, reversible, permanent magnet motors with a built-in circuit breaker. The motors are energized by a switch bolted on the seat side panel.
The three motors drive the front seat and rear vertical actuators and a horizontal actuator. When the adjusters reach the limit of travel, torque is absorbed through the rubber mounted grommets located between the motor and the support. An overload relay is provided in the circuit and will open should excessive stall be applied.
The optional 60/40 split bench front seats have seat back head restraints on the driver's and passenger's seat back. The head restraints are designed so they cannot be removed from the seat back without first inserting a small rounded tool inside the head restraint support tube to release the locking tab. The 60/40 split bench seat is equipped with a reclining mechanism on both the driver's and passenger's side. The recliner lever is located on the outboard side of the spring cushion. When the lever is pulled upward, the spring loaded dual linear reclining unit located in the cushion frame is released, allowing the seat back to be pushed rearward or allowing the spring loaded reclining unit to bring the seat back forward.
Bucket seats are equipped with manual reclining mechanisms. An optional six-way power seat adjuster is available. Some bucket seats are equipped with inertia seat back locks. This system allows the seat back to fold forward without requiring the occupant to release a locking lever or access to the rear seat area. During a sudden stop or deceleration, or if the front of the vehicle is nose down, the inertia system of the seat back lock will engage, holding the seat back in its rest position. A release lever is provided to allow manual release of the seat back lock when the vehicle is in the nose down position. The release lever is located at the lower rear outboard corner of the seat back.
Some W-Body vehicles (notably Pontiac coupes) have passenger front seats equipped with an E-Z Entry device. This is actuated, in an unoccupied seat, by completely folding the seat back forward disengaging the adjuster, and sliding the front seat forward to gain access to the rear seat area. To return the seat to its normal position, return the seat back to its rest position, and slide the entire seat rearward, engaging the adjuster.
W-Body rear seats are available in several styles including a rear seat with an integral child restraint device.

how do you adjust a detent cable for a 89 astro van on 700r4 transmission

Motor on the seat may have gone out, contacts in switch got dirty or worn, or assembly reached limit and stuck. Try sitting in it pushing back hard and adjust. If not youll need to replace switch,b take seat apart to fix or replace.

Passenger seats are usually manually operated from a latch or bar under the front of the seat. the seat back should have a lever between the door and edge of seat to make adjustment pull up on lever push back on seatback.