It depends on what kind of pistol and what kind of malfuction.
It depends on the type of "jam". Is it a double feed?
Open the link below and read the section on (REPAIR/SERVICE)
You will need a .177 caliber cleaning rod to push the pellet back into the loading breech from the barrel.
Try to cock it while pushing a cleaning rod down the barrell
Crosman still services this pistol it is best to contact them and tell them what you need, their address is: Crosman Corporation7629 Routes 5 & 20East Bloomfield, NY 144431-800-7AIRGUN (724-7486)
To unjam the trigger on a Bernardelli Model 80, first ensure the firearm is pointed in a safe direction. Disassemble the pistol according to the manufacturer’s instructions, checking for any obstructions or debris that may be causing the jam. Inspect the trigger mechanism and clear any blockages, then reassemble the firearm carefully. If the issue persists, seek assistance from a qualified gunsmith.
on top of the gun is a little slide panel which should hep unjam -j.p
it's impossible
The best way to go about it is to remove the floor plate, then take out the spring and follower. If you're having misfeeds with that magazine, the most likely culprit would be either the follower, spring, or perhaps both, and it may be necessary to replace them.
The best thing you can do is find a gunsmith
The best thing you can do is find a gunsmith
take it to a gunsmith