Foot controlled handle release lever is broken. Where to get parts?

Don't know your brand vacuum but if I understand you correctly the solution should be pretty straight forward unless the lowering lever is broken somehow. Usually there is a foot lever on the left, or sometimes the right, toward the rear part of the base to push with your foot. Step on it while at the same time push it slightly forward first - just a quick 1" forward motion, then pull it toward you. That SHOULD disengage the handle to be able to vacuum freely.

Tilt the handle back and pry it out with a flat blade screwdriver.

Order Slider Release (7.93, vacpartswarehouse) Pull off 'tank.' Remove 3 Screws for Foot Detent Lever. Pull off. Remove old slider release and spring (verify it's broke.) Replace with new. I just did this today after a year of dealing with it.

The pedal release can be replaced but the base will need to be checked for cracks as well. if the base is broken most common is the socket the pedal release snaps into. some of the plastic parts have been made with better materials

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_b96ba3f038cf317c

it is accessed from the bottom underneath by the rear wheel. However, If there are and cracks on the pedal release socket area then the base will need replacement. parts are little cost but the unit needs to be completely disassembled.

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_b96ba3f038cf317c

Remove the pieces of the old spring and take it to any OSH store, they have an assortment that will likely have one that will work.

For the handle release, part number is Detent Lever 2030052 Try bissell.com, or call a local repair shop, if they repair Bissell's, then they may have this part in stock. You shouldn't have to take it aprt, there 2 tabs on the release that fit into slots on the base, there move the slots so as to release the tabs.

Most times they don't break, it is the 2 screw holes at the back that back and the top will raise up from the base. If this is the case, remove the 2 screws and install longer ones with a flat washer on them to fashen down the top. But first the top will have to be removed to put the handle release in the right spot. You would probably look at around $60 to repair, unless the top needs replaecment, then it would be more parts.

There is no release, the part is a plastic handle release lever, you can find those at www.hesco.com, the cost is approximately 2.29 each, I have replaced more than 20 of these on the commercial vacuums for my cleaning crew, the part is easily broken and easily replaced. I always have 6 or more on hand.
Turn the vacuum over, remove the bottom plate, with a flat head screw driver punch out the old part. turn the vacuum upright again after the broken part is removed. With the body laying back on a hard surface, carefully push in the new part. Unfortunately, these are plastic, too bad they cannot design a more sturdy part for this.

You will have to take the top loose so you can put the handle release in its place. It probably isn't in the right place, either that or a piece of it broke off and it needs to be replaced.