How do i unlock brake tried resetting arms stalls when engaging handles also wont come out of gear when releasing bypass valve

You are probably having an issue with your shifter interlock. Your owners manual should tell you how to bypass it for emergency situations, but you will need to have it looked at and repaired. There is a cable and solenoid that releases when the brake pedal is depressed.

So if you raise the revs to say about 4000 rpm and let the clutch out does it stall or judder or both will it engage at all and pull away ?

bad check valve or buy pass screen dirty take to shop 100.00 for by pass to fix 100.00 for check valve to fix

un hook them they maybe dirty and rust causeing no release

Your car should have an E-brake engage/release lever. Please inspect the push button on the end of the lever. Does the button depress and release correctly? My guess is that the lever needs to be repaired or replaced. Maybe the internal spring has broke and the button wont release. If the button doesn't release, the ratchet wont engage. Write back and let me know what you found or if you have other questions, good luck.

You have a bad switch a seat or clutch one of them are bad

Fit 4th gear Release hand brakes on strait floor with open hood and push the car back and Forward to see if the engine engage your gear box if is not your clutch is back to front.if engage press the clutch pedal to make release of the gear,notes mechanical clutch cable or hydraulic system. check Release bearing arm position.

Make sure the brake light switch didn't come loose when you were pumping the brakes... that switch also releases the shifter. It should be located up on the brake pedal arm under the dash

Under the seat, there is a operator presence switch, if this switch fails, the mower will shut off when the brake is released, or put in any gear.

the seat switch is the problem. the switch itself could be bad, but usually theproblem is that the connector is just not plugged in all the way [by the way, trying to bypass the switch by inserting the wire doesn't work because there is a "switch" inside the connector to prevent you from doing just what you did]