Can the pressure switch on a Bostitch pancake compressor model cap2000p-of be adjusted so the compressor will come on and shut off at a different pressure than what was set a the factory?

SOURCE: cycling compressor

The pressure switch will shut off when the set pressure is obtained. Usually about 100 to 120 lbs. If the compressor stops at lower pressure than mentioned you may try to adjust the pressure by looking under the switch cover for adjustment screw/nut.(no more than a few turns) Increase pressure by increasing spring tension. Quick cycling is usually caused by air leaking from tubing, drain valve or check valve. After compressor shuts off unplug it from the outlet and spray soapy water on all fittings and drain valve. Repair leaks and test for quick cycling, however the compressor should reach 100-120 before shutting off. Some small compressors have a thermal reset but that usually takes a few minutes to reset. Pressure switch is defective if it shuts off before setting mentioned. Enjoy

SOURCE: my air compressor (pancake task force) cycles on

EITHER YOUR PRESSURE SWITCH IS BAD OR YOUR TANK IS COMPLETELY FULL OF WATER AND THERE IS LITTLE ROOM FOR AIR. ALWAYS TAKE YOUR SWITCH WITH YOU WHEN PURCHASING A REPLACEMENT.

SOURCE: Bostitch Air Compressor cap60p-of will not shut off

you can open the pressure switch if it has a removable cover and try,but i'd replace the pressure switch anyway

SOURCE: I have a Bostitch CAP2000P-OF 6 gal compressor.

Something is wrong with your "unloader" I should think. That is the device that removes the pressure from the cylinder so the machine does not have to start up against its full air pressure
There will be a narrow air pipe connecting the compressor to the switch assembly which bleeds off the air when the power is off. That hiss you get when you turn it off or it turns itself off.
I think you will find a leak there or possibly the non return valve that stops all the air escaping when the unloader valve is open has failed or got a foreign body stuck in its seating.

SOURCE: Mastercraft compressor - one pancake type tank ... need pressure

You do not need to use factory replacement switch. Mos t universal pressure switches are set to shut off at 120-130 psi. You will need to check the placement of the unloader valve (1/4 line from check valve) and the quantity of ports as some switches have only one port and others have 3-4. Check ebay for good match and low price. Good Luck